Investing

Make Your Money Hustle: Bond Investing Explore how bonds can diversify your investments, filling the gap between cash and stocks. Bonds can be confusing, but we’re here to simplify them. Here’s the TL;DR: Bonds are loans you give to companies or governments who pay you back with interest. Bonds generally earn more return than high-yield savings accounts while taking on less risk than stocks. Bonds can be bought through several sources, including a broker, the U.S. government, or a diversified ETF like the multiple bond portfolios offered by Betterment. Congrats—you made it past the TL;DR. Next, we’ll dive deeper into how bonds may be able to bring balance to your investments, filling the gap between cash and stocks. In just a few minutes, you’ll walk away knowing: The basics of bonds The benefits of investing in bonds An easy way to buy bonds As interest rates begin to drop, bonds may be a good way to earn extra yield. The basics of bonds No need to read a book about bonds—here are three Q&As that give you the basics. Question 1: What is a bond? Answer: A bond is basically a loan that you provide to an entity such as a business or government that wants to raise money. You can buy and hold a bond directly from the issuer (e.g. buying US Treasury bonds from TreasuryDirect) or choose to buy and sell bonds on the secondary market (e.g. an online broker). Question 2: How does a bond work? Answer: After you “loan” your money to the entity issuing the bond, they agree to: Pay back your principal: The issuer promises to pay your initial money back, aka your principal, by a specified date called the bond’s maturity. Pay you interest: You’ll receive periodic interest payments based on the annual interest rate paid on a bond, called the coupon rate. These interest payments are either distributed to you or reinvested into your investment on a consistent schedule. Question 3: Are there risks to bond investing? Answer: Generally, bonds are less risky than stocks, but that doesn't mean they are without risk. Examples of these risks include: Credit risk: There’s a chance that a bond issuer won’t pay you back. Interest rate risk: There is a chance that the value of the bond will go down as interest rates go up. Long-term bonds have greater interest rate risk than short-term bonds. Most bonds are rated based on the bond issuer's financial strength and ability to pay a bond's principal and interest. Like stock investments, bonds with less risk offer less potential for return (aka lower yields). Less risky bonds include higher-quality bonds (more likely to be paid on time) or bonds with shorter maturities (length until full repayment). The benefits of investing in bonds For investors looking to put some of their cash to work but not wanting to go all-in on the stock market, here are three benefits that bonds can offer, making them complementary to cash and stock. 1) Bonds can help you avoid market volatility Unlike stocks, bonds don’t represent a share of ownership in a company. Because of this, you won’t see the value of a bond increase as much as a stock when a company grows, but you generally also won’t see it decrease as much as a stock when a company struggles. 2) Bonds can help you preserve wealth Bonds, especially short-maturity bonds, can be a good choice to help preserve your money while potentially earning more return than cash in a traditional savings account, money market account, or CD. 3) Bonds can help you generate income Because the entity issuing a bond typically pays the bondholder interest on some regular schedule, they can help generate consistent income with less risk than stock investing. An easy way to buy bonds Most bonds don't trade directly on centralized markets like stocks, making it more challenging to invest in individual bonds. You can buy individual bonds from a broker or directly from the US government, but both of those options require DIY knowledge and time to build a diversified portfolio. An easy way to invest in a diversified portfolio of bonds is to invest in a bond ETF. A bond ETF, or exchange-traded fund, trades on stock exchanges, like a stock ETF. In one purchase, a bond ETF offers investors a way to gain exposure to a diversified portfolio of bonds, which can include government, municipal, corporate, and international bonds. Bond ETFs aim to provide regular income through interest payments from the underlying bonds and offer the flexibility of buying and selling shares on an exchange throughout the trading day. Make your money hustle with a Betterment bond portfolio We’ve created two types of bond portfolios with different needs in mind: BlackRock Target Income portfolios What is it? The portfolios include a diverse set of bond ETFs with a range of risk levels, helping to mitigate exposure to volatility in the stock market, aiming to preserve wealth, while seeking to generate income. Who is it for? These portfolios may be better suited for investors looking for lower risk compared to stocks, with the option to choose one of four portfolio strategies targeting increasingly higher yields. The portfolio strategy should be selected based on your risk tolerance. Keep in mind, getting more income from a specific target portfolio also means taking on more risk. Goldman Sachs Tax-Smart Bonds portfolio What is it? This portfolio is built by Goldman Sachs using 100% short-term bond ETFs. Betterment then personalizes the portfolio based on your tax situation with the aim of generating after-tax yield. Who is it for? The portfolio is designed for higher-income individuals, especially in the 32% or greater federal tax bracket, looking for a potentially higher after-tax yield than a cash account with less risk than a traditional stock-and-bond investing portfolio. In both portfolios, all interest payments, also called dividends, are automatically reinvested to help grow the portfolio’s value. Ready to be invested? We make it simple to invest in a bond portfolio with three options: Make a one-time deposit. Set up recurring deposits from Betterment Checking or an external account. Schedule recurring transfers from your Betterment Cash Reserve account.

How we keep your Betterment account and investments safe So you can invest with peace of mind All investing comes with some risk. But that risk should be based on the market, not your broker. That’s why we safeguard both your Betterment account and your investments with multiple security measures, all so you can log in and invest or save with peace of mind. Here’s a sampling. Four ways we keep your Betterment account safe Two-factor authentication Two-factor authentication (2FA) adds an extra layer of security to your account, like an extra lock on a door. Besides your regular password, 2FA requires a second form of verification such as a code texted to your phone (good) or one served up by an authenticator app like Google Authenticator (even more secure). This helps ensure that even if someone manages to get hold of your Betterment password, they still can't access your account without a second form of verification. Encryption Every time you interact with us, whether on our website or our app, your data is protected by encrypted connections. This means that the information transmitted between your device and our servers is scrambled in a way that only we can understand. Password hashing When you create a password for your Betterment account, it's not stored in plain text. Instead, we use a process called hashing, which converts your password into a unique string of characters. This way, even if our systems were breached, your actual password would remain unknown and unusable by unauthorized parties. App-specific passwords Connecting third-party apps to one another unlocks all sorts of benefits. You can see your net worth when you log in to Betterment. You can quickly import your Betterment tax forms to your tax prep software. To enable these connections securely, we offer app-specific passwords. If any one of these connections is compromised, you can easily revoke access without affecting the security of your main Betterment account. Four ways we keep your investments safe Easy verification of holdings Transparency is one of our key principles, so we make it easy to verify everything is in its right place. We not only show each trade made on your behalf and the precise number of shares in which you’re invested, we also list each fractional share sold and the respective gross proceeds and cost basis for each. You can find all this information in the Holdings and Activity tabs for each of your goals. Independent oversight We regularly undergo review by independent auditors. This means auditors reconcile every share and every dollar we say we have against our actual holdings. They also spot check random customer accounts and verify that account statements match our internal records. And they ask questions if anything is even a penny off. No commingling of funds Your funds are kept separate from Betterment’s operational funds. This means that your investments are held in your name and are never mixed with our company finances. In the unlikely event we face financial difficulties, your assets remain secure and untouched. SIPC insurance To add another layer of protection, your Betterment securities are insured by the Securities Investor Protection Corporation (SIPC). This insurance covers up to $500,000 per customer, including a $250,000 limit for cash claims. While SIPC doesn’t protect against market losses, it does provide a safety net in case of a brokerage failure. An explanatory brochure is available upon request or at sipc.org. How you can help In the end, the most important security measure is you. Be on the lookout for suspicious phone calls, texts, and emails (odd-looking URLs, typo-riddled messages, etc.) and know that Betterment will never ask you for your password or 2FA code except when logging in or editing your personal information in the app. Use a strong, unique password for your account, and don’t hesitate to contact us directly if you suspect a scam message and need to verify that we’ve reached out. We’ve got your back, and between the two of us, we can help keep bad actors at bay.

How tax loss harvesting can give your taxable investing an edge The tax strategy can unlock similar benefits as tax-deferred accounts Tax loss harvesting, or TLH for short, is the act of selling an asset at a loss, then quickly replacing it with a similar one—primarily to offset taxes owed on capital gains or income. In practice, it lowers your taxes now and increases them later. But don’t freak out, because the key takeaway of TLH is this: TLH can take a portion of your taxable investing and effectively turn it into tax-deferred investing. And tax-deferred investing, as we’ll quickly demonstrate, can do wonders for wealth-building. Tax me now or tax me later Take a dollar you would’ve otherwise paid in taxes today. Now invest it wisely. Odds are, it’ll be worth a lot more in the long run, even taking away any taxes you eventually owe. Depending on how your tax situation shakes out over the years, tax-deferred investing can be like Uncle Sam giving you a nearly interest-free loan to invest. This is in large part why tax-deferred accounts like traditional 401(k)s and IRAs come with restrictions. They’re reserved for retirement, namely, and their contributions are capped. But tax loss harvesting opens an entirely new door for tax-deferred investing, along with a few other side benefits. For a few types of investors in particular, it offers tremendous upside. Who TLH benefits the most Let’s start with an important caveat: While TLH offers potential value for most investors, it can be a wash or actually increase your tax burden in certain cases. But for now, let’s focus on three types of investors who can reap some of the biggest rewards from the strategy: The high-income earner Once you’ve offset all of your realized capital gains taxes for a given year, any leftover harvested losses can be used to offset taxes on up to $3,000 of ordinary income. So in the case of high earners, this means trading a high income tax rate for a relatively low long-term capital gains tax rate. The end result is both deferring and discounting your taxes. The steady saver Not only are recurring deposits a great way to start a savings habit, they also produce more harvesting opportunities. That’s because the older an investment, the less likely it drops below its initial purchase price (aka “cost basis”) and can be harvested at a loss. A steady drip of deposits, monthly for example, creates fresh crops of investments for harvesting in the near future. The tax-smart philanthropist A common misconception of tax loss harvesting is that it helps you avoid paying taxes altogether. Believe it or not, however, two scenarios exist in which you actually can cancel out your tax obligation: The first is when you donate shares to charity. As we mentioned earlier, selling and replacing shares as part of a harvest increases their future tax bill. It does this by lowering the shares’ cost basis, or the initial purchase price used to calculate capital gains. If you donate and replace these shares down the road, however, you reset their cost basis to a new, higher level. This effectively wipes out their entire tax bill(!) that had accrued to that point. In the eyes of the IRS, it’s like those capital gains never happened, and it’s one big reason why wealthy investors have long paired TLH with the practice of donating shares. The second scenario is posthumously. At that point, you won’t get a tax break, of course. But any individuals who you leave shares to will, because immediately after your death, the cost basis of your investments similarly “steps up” to their current market value. Your harvest awaits Historically-speaking, tax loss harvesting has been too time-intensive and costly to execute for all but the wealthiest of investors. But technology like ours and the low-cost trading of ETFs have made it a tax strategy for the masses. If TLH is right for you, the sooner you open and start contributing to a taxable account, the sooner you can start giving a portion of your taxable investing an edge. If you already have a Betterment taxable account, here’s how to turn on tax loss harvesting.

An industry-first, tax-smart bond portfolio See how the Goldman Sachs Tax-Smart Bonds portfolio seeks to offer a strategy with potentially lower risk than investing in stocks, personalized by Betterment to be tax-smart to your financial situation. Key Takeaways: As interest rates eventually begin to drop, bonds may be a good way to earn extra after-tax yield compared to high-yield cash accounts in 2024 and beyond. For high-income investors in higher federal tax brackets (32% and above), certain bond strategies may offer tax advantages compared to high-yield cash accounts. The industry-first Goldman Sachs Tax-Smart Bonds portfolio is personalized by Betterment to your tax situation and seeks to provide a way for higher-income investors to get a tax-smart strategy with potentially lower risk than stock investing and is designed to increase after-tax yield. Over the past few years, investors have been able to put their cash to work in high-yield savings and cash accounts. In fact, the Fed has raised rates 11 times during its current cycle of interest rate hikes beginning in 2022. But those rate hikes have come to a pause. The last rate hike was in July 2023, and the world is waiting for the Fed to lower rates. So what does that mean for investors? Once the Fed lowers rates, those high-yield savings and cash accounts will follow suit, likely no longer offering the attractive 4% or even 5%-plus yields. The case for bonds in 2024 and beyond As interest rates begin to drop, bonds may be a good way to earn extra yield in 2024 and beyond. Investors looking to continue to earn yield should consider three points: Variable interest rates on high-yield cash accounts will likely fall when the Fed lowers rates, but bonds, on the other hand, tend to benefit from rate cuts because as yields fall, bond prices rise and generate return. Bonds, especially short-maturity bonds, can be a good choice to help preserve your money compared to stocks. For high earners, especially in the 32% or greater tax bracket, certain bonds may offer tax advantages compared to high-yield cash accounts. As the Fed reduces rates, bonds may be a wise alternative. Just a reminder, even short-term bond portfolios carry a bit more risk than cash management accounts, which are generally FDIC-insured and provide the stated yield. Bonds are securities that are exposed to market volatility but, in return, provide the opportunity to increase after-tax yield, which is the money you actually get to keep after paying taxes. Meet the Goldman Sachs Tax-Smart Bonds portfolio Our new Goldman Sachs Tax-Smart Bonds portfolio is industry-first, representing a unique opportunity for higher-income investors. The portfolio is designed to reduce risk compared to investing in stocks and increase after-tax yield compared to a cash account. Betterment does all the work for you behind the scenes to personalize the portfolio to your tax situation while leveraging Goldman Sachs' expertise in bond markets to aim to generate additional after-tax yield. But how does the portfolio work? Let’s look at an example of a hypothetical $100,000 investment… The power of after-tax yield The Goldman Sachs Tax-Smart Bonds portfolio is designed to generate additional after-tax yield compared to a cash account. By increasing after-tax yield, you may earn a higher return after taxes and fees than a regular high-yield cash account, which can be an advantage for high-income investors. Take a look at the standard yield and the after-tax yield of a hypothetical $100,000 placed in our Cash Reserve portfolio and our Goldman Sachs Tax-Smart Bonds portfolio by an investor in the 35% tax bracket.* Pre-Tax Yield After-Tax Yield** Take Home on $100,000 Cash Reserve 5.00% (variable)* 2.60% $2,595 Goldman Sachs Tax-Smart Bonds Portfolio 4.61% 2.85% $2,864 **Annualized Blended 30-day SEC Yield. After-tax assumes individual filing single in CA, 35% federal tax rate, and $260K income. Results may vary substantially. There are important risks to consider in comparing these products to each other, which we discuss in further detail below. The information provided is not tax advice and customers should obtain independent tax advice based on their particular situation. You can see that after taxes are paid, the Goldman Sachs portfolio comes out on top in our hypothetical scenario, which is illustrative only. What is after-tax yield, exactly? After-tax yield is the amount, expressed as a percentage of the investment, that you can expect to receive from an investment after paying taxes. We use after-tax yield to help you compare the potential profitability of portfolios that are taxed differently, such as our cash and bond portfolios. Municipal bonds are exempt from tax at the federal level, offering an after-tax benefit to higher income investors. Treasuries are exempt at the state level—particularly advantageous for those residing in high income tax states. After-tax yield for the Tax-Smart Bonds portfolio is calculated as the weighted average of 30-Day SEC yields for each ETF in the portfolio, net of fees (0.25%), and net of taxes, as determined by your Betterment profile data. After-tax yield reflects interest earned after fund expenses. How does the Goldman Sachs Tax-Smart Bonds portfolio take after-tax yield into account? Here’s how we work to take after-tax yield into account: First, Goldman Sachs built the portfolio with a mix of short-term bond ETFs containing treasury, municipal, and corporate bonds, which seek to offer lower risk than stock investing, leveraging their expertise in bond markets. Next, Betterment uses the information that you provide about your tax situation, including your state residency, federal tax bracket, and income, to personalize the portfolio for you. Finally, the portfolio strategy considers market conditions and taxable equivalent yields monthly. When you let Betterment know that your tax situation has changed and as interest rates shift, Betterment will rebalance your personalized portfolio. A spectrum of choices to optimize your cash At Betterment, we believe in investor choice. That’s why we continually create innovative portfolios to provide you with options based on your risk tolerance and desire for yield. And as interest rates evolve, your cash should still work for you. Diving deeper into your cash options When it comes to considering risk and yield—and choosing the portfolio right for you—we like to compare portfolio options across a few variables. First is the risk of losing money. With most investments, you potentially risk losing some of the amount of your initial investment, also called your “principal.” Our Cash Reserve account is the only portfolio offering FDIC insurance through program banks† to secure your money during volatile times. After Cash Reserve, our Goldman Sachs Tax-Smart Bonds portfolio is our option with the potential lower risk than investing in stocks where losses on principal, while still possible due to market volatility, are less likely. Second, we have liquidity. Liquidity is how easily (or not) available your funds are. It can be risky if your funds are locked up for a period of time, but you need them to cover expenses. All three portfolios provide access to your money when you need it (inclusive of standard ETF settlement times). Third, we account for tax. We offer tax-smart strategies to increase a portfolio’s after-tax yield. Our Goldman Sachs Tax-Smart Bonds portfolio offers this kind of tax-smart strategy designed for high-income investors. Breaking down the spectrum of portfolio choices available at Betterment Cash Reserve: If you want low risk, a Cash Reserve account can provide you the stated variable APY while preserving your funds in FDIC-insured accounts at our program banks. Goldman Sachs Tax-Smart Bonds: If you’re a higher-income investor (in a 32% federal tax bracket or above) and want to take more risk than Cash Reserve for the chance to potentially increase after-tax yield, then the Goldman Sachs Tax-Smart Bonds portfolio may be an option for you. BlackRock Target Income: If you’re comfortable with more risk than Cash Reserve and the Goldman Sachs Tax-Smart Bonds portfolio, our BlackRock Target Income portfolio is built to target income across four levels of risk while reducing volatility compared to stock portfolios. See which option might be best for you When you sign up for a bond investing account, Betterment will provide you with a personalized after-tax yield to help you compare our Cash Reserve account to our bond portfolios. Based on your degree of risk tolerance and the various after-tax yields of these three products, which are calculated based on the information provided to Betterment in your financial profile, you can select which portfolio is right for your goals and financial situation. Get started today.

The Betterment Core portfolio strategy We continually improve our portfolio construction methodology over time in line with our research-focused investment philosophy. TABLE OF CONTENTS Introduction Global Diversification and Asset Allocation Portfolio Optimization Tax Management Using Municipal Bonds The Value Tilt Portfolio Strategy Innovative Technology Portfolio Strategy Conclusion Citations I. Introduction Betterment builds investment portfolios designed to help you make the most of your money so you can live the life you want. Our investment philosophy forms the basis for how we pursue that objective: Betterment uses real-world evidence and systematic decision-making to help increase our customers’ wealth. In building our platform and offering individualized advice, Betterment’s philosophy is actualized by our five investing principles. Regardless of one’s assets or specific situation, Betterment believes all investors should: Make a personalized plan. Build in discipline. Maintain diversification. Balance cost and value. Manage taxes. To align with Betterment’s investing principles, a portfolio strategy must enable personalized planning and built-in discipline for investors. The Betterment Core portfolio strategy contains 101 individualized risk levels (each with a different percentage of the portfolio invested in stocks vs. bonds, informed by your financial goals, time horizon and risk tolerance), in part, because that level of granularity in allocation management provides the flexibility to align to multiple goals with different timelines and circumstances. In this guide to the Betterment Core portfolio strategy construction process, our goal is to demonstrate how the methodology, in both its application and development, embodies Betterment’s investing principles. When developing a portfolio strategy, any investment manager faces two main tasks: asset class selection and portfolio optimization. Fund selection is also guided by our investing principles, and is covered separately in our Investment Selection Methodology paper. II. Global Diversification and Asset Allocation An optimal asset allocation is one that lies on the efficient frontier, which is a set of portfolios that seek to achieve the maximum objective for any given feasible level of risk. The objective of most long-term portfolio strategies is to maximize return for a given level of risk, which is measured in terms of volatility—the dispersion of those returns. In line with our investment philosophy of making systematic decisions backed by research, Betterment’s asset allocation is based on a theory by economist Harry Markowitz called Modern Portfolio Theory.1 A major tenet of Modern Portfolio Theory is that any asset included in a portfolio should not be assessed by itself, but rather, its potential risk and return should be analyzed as a contribution to the whole portfolio. Modern Portfolio Theory seeks to maximize expected return given an expected risk level or, equivalently, minimize expected risk given an expected return. Other forms of portfolio construction may legitimately pursue other objectives, such as optimizing for income, or minimizing loss of principal. Asset Classes Selected for Betterment’s Core Portfolio Strategy The Betterment Core portfolio strategy’s asset allocation starts with a universe of investable assets, which for us could be thought of as the “global market portfolio.”2 To capture the exposures of the asset classes for the global market portfolio, Betterment evaluates available exchange-traded funds (ETFs) that represent each class in the theoretical market portfolio. We base our asset class selection on ETFs because this aligns portfolio construction with our investment selection methodology. Betterment’s portfolios are constructed of the following asset classes: Equities U.S. equities International developed market equities Emerging market equities Bonds U.S. short-term treasury bonds U.S. inflation-protected bonds U.S. investment-grade bonds U.S. municipal bonds International developed market bonds Emerging market bonds We select U.S. and international developed market equities as a core part of the portfolio. Historically, equities exhibit a high degree of volatility, but provide some degree of inflation protection. Even though significant historical drawdowns, such as the global financial crisis in 2008 and pandemic outbreak in 2020, demonstrate the possible risk of investing in equities, longer-term historical data and our forward expected returns calculations suggest that developed market equities remain a core part of any asset allocation aimed at achieving positive returns. This is because, over the long term, developed market equities have tended to outperform bonds on a risk-adjusted basis. To achieve a global market portfolio, we also include equities from less developed economies, called emerging markets. Generally, emerging market equities tend to be more volatile than U.S. and international developed equities. And while our research shows high correlation between this asset class and developed market equities, their inclusion on a risk-adjusted basis is important for global diversification. Note that Betterment excludes frontier markets, which are even smaller than emerging markets, due to their widely varying definition, extreme volatility, small contribution to global market capitalization, and cost to access. The Betterment Core portfolio strategy incorporates bond exposure because, historically, bonds have a low correlation with equities, and they remain an important way to dial down the overall risk of a portfolio. To promote diversification and leverage various risk and reward tradeoffs, the Betterment Core portfolio strategy includes exposure to several asset classes of bonds. Asset Classes Excluded from the Betterment Core Portfolio Strategy While Modern Portfolio Theory would have us craft a portfolio to represent the total market, including all available asset classes, we exclude some asset classes whose cost and/or lack of data outweighs the potential benefit gained from their inclusion. The Betterment Core portfolio construction process excludes commodities and natural resources asset classes. Specifically, while commodities represent an investable asset class in the global financial market, we have excluded commodities ETFs because of their low contribution to a global stock/bond portfolio's risk-adjusted return. In addition, real estate investment trusts (REITs), which tend to be well marketed as a separate asset class, are not explicitly included in the Core portfolio strategy. Betterment does provide exposure to real estate, but as a sector within equities. Adding additional real estate exposure by including a REIT asset class would overweight the exposure to real estate relative to the overall market. Incorporating awareness of a benchmark Before 2024, we managed the Core portfolio strategy in a “benchmark agnostic” manner, meaning we did not incorporate consideration of global stock and bond indices in our portfolio optimization, though we have always sought to optimize the expected risk-adjusted return of the portfolios we construct for clients. The “risk” element of this statement represents volatility and the related drawdown potential of the portfolio, but it could also represent the risk in the deviation of the portfolio’s performance relative to a benchmark. In an evolution of our investment process, in 2024 we updated our portfolio construction methodology to become “benchmark aware,” as we now calibrate our exposures based on a custom benchmark that expresses our preference for diversifying across global stocks and bonds. A benchmark, which comes in the form of a broad-based market index or a combination of indices, serves as a reference point when approaching asset allocation, understanding investment performance, and aligning the expectations of portfolio managers and clients. In our case, we created a custom benchmark that most closely aligns with our future expectations for global markets. The custom benchmark we have selected is composed of (1) the MSCI All Country World stock index (MSCI ACWI), (2) the Bloomberg Global Aggregate Bond index, and (3) at low risk levels, the ICE US Treasury 1-3 Year Index. Our custom benchmark is composed of 101 risk levels of varying percentage weightings of the stock and bond indexes, which correspond to the 101 risk level allocations in our Core portfolio. At low risk levels (allocations that are less than 40% stocks), we layer an allocation to the ICE US Treasury 1-3 Year index, which represents short-term bonds, into the blended benchmark. We believe that incorporating this custom benchmark into our process reinforces the discipline of carefully evaluating the ways in which our portfolios’ performance could veer from global market indices and deviate from our clients’ expectations. We have customized the benchmark with 101 risk levels so that it serves clients’ varying investment goals and risk tolerances. As we will explore in the following section, establishing a benchmark allows us to apply constraints to our portfolio optimization that ensures the portfolio strategy’s asset allocation does not vary significantly from the geographic and market-capitalization size exposures of a sound benchmark. Our benchmark selection also makes explicit that the portfolio strategy delivers global diversification rather than the more narrowly concentrated and home-biased exposures of other possible benchmarks such as the S&P 500. III. Portfolio Optimization As an asset manager, we fine-tune the investments our clients hold with us, seeking to maximize return potential for the appropriate amount of risk each client can tolerate. We base this effort on a foundation of established techniques in the industry and our own rigorous research and analysis. While most asset managers offer a limited set of model portfolios at a defined risk scale, the Betterment Core portfolio strategy is designed to give customers more granularity and control over how much risk they want to take on. Instead of offering a conventional set of three portfolio choices—aggressive, moderate, and conservative—our portfolio optimization methods enable the Core portfolio strategy to contain 101 different risk levels. Optimizing Portfolios Modern Portfolio Theory requires estimating variables such as expected-returns, covariances, and volatilities to optimize for portfolios that sit along an efficient frontier. We refer to these variables as capital market assumptions (CMAs), and they provide quantitative inputs for our process to derive favorable asset class weights for the portfolio strategy. While we could use historical averages to estimate future returns, this is inherently unreliable because historical returns do not necessarily represent future expectations. A better way is to utilize the Capital Asset Pricing Model (CAPM) along with a utility function which allows us to optimize for the portfolio with a higher return for the risk that the investor is willing to accept. Computing Forward-Looking Return Inputs Under CAPM assumptions, the global market portfolio is the optimal portfolio. Since we know the weights of the global market portfolio and can reasonably estimate the covariance of those assets, we can recover the returns implied by the market.3 This relationship gives rise to the equation for reverse optimization: μ = λ Σ ωmarket Where μ is the return vector, λ is the risk aversion parameter, Σ is the covariance matrix, and ωmarket is the weights of the assets in the global market portfolio.5 By using CAPM, the expected return is essentially determined to be proportional to the asset’s contribution to the overall portfolio risk. It’s called a reverse optimization because the weights are taken as a given and this implies the returns that investors are expecting. While CAPM is an elegant theory, it does rely on a number of limiting assumptions: e.g., a one period model, a frictionless and efficient market, and the assumption that all investors are rational mean-variance optimizers.4 In order to complete the equation above and compute the expected returns using reverse optimization, we need the covariance matrix as an input. This matrix mathematically describes the relationships of every asset with each other as well as the volatility risk of the assets themselves. In another more recent evolution of our investment process, we also attempt to increase the robustness of our CMAs by averaging in the estimates of expected returns and volatilities published by large asset managers such as BlackRock, Vanguard, and State Street Global Advisors. We weight the contribution of their figures to our final estimates based on our judgment of the external provider’s methodology. Constrained optimization for stock-heavy portfolios After formulating our CMAs for each of the asset classes we favor for inclusion in the Betterment Core portfolio strategy, we then solve for target portfolio allocation weights (the specific set of asset classes and the relative distribution among those asset classes in which a portfolio will be invested), with the range of possible solutions constrained by limiting the deviation from the composition of the custom benchmark. To robustly estimate the weights that best balance risk and return, we first generate several thousand random samples of 15 years of expected returns for the selected asset classes based on our latest CMAs, assuming a multivariate normal distribution. For each sample of 15 years of simulated expected return data, we find a set of allocation weights subject to constraints that provide the best risk-return trade-off, expressed as the portfolio’s Sharpe ratio, i.e., the ratio of its return to its volatility. Averaging the allocation weights across the thousands of return samples gives a single set of allocation weights optimized to perform in the face of a wide range of market scenarios (a “target allocation”). The constraints are imposed to make the portfolio weights more benchmark-aware by setting maximum and minimum limits to some asset class weights. These constraints reflect our judgment of how far the composition of geographic regions within the portfolio’s stock and bond allocations should differ from the breakdown of the indices used in the benchmark before the risk of significantly varied performance between the portfolio strategy and the benchmark becomes untenable. For example, the share of the portfolio’s stock allocation assigned to international developed stocks should not be profoundly different from the share of international developed stocks within the MSCI ACWI. We implement caps on the weights of emerging market stocks and bonds, which are often projected to have high returns in our CMAs, and set minimum thresholds for U.S. stocks and bonds. This approach not only ensures our portfolio aligns more closely with the benchmark, but it also mitigates the risk of disproportionately allocating to certain high expected return asset classes. Constrained optimization for bond-heavy portfolios For versions of the Core portfolio strategy that have more than or equal to 60% allocation to bonds, the optimization approach differs in that expected returns are maximized for target volatilities assigned to each risk level. These volatility targets are determined by considering the volatility of the equivalent benchmark. Manually established constraints are designed to manage risk relative to the benchmark, instituting a declining trend in emerging market stock and bond exposures as stock allocations (i.e., the risk level) decreases. Meaning that investors with more conservative risk tolerances have reduced exposures to emerging market stocks and bonds because emerging markets tend to have more volatility and downside-risk relative to more established markets. Additionally, as the stock allocation percentage decreases, we taper the share of international and U.S. aggregate bonds within the overall bond allocation, and increase the share of short-term Treasury, short-term investment grade, and inflation-protected bonds. This reflects our view that investors with more conservative risk tolerances should have increased exposure to short-term Treasury, short-term investment grade, and inflation-protected bonds relative to riskier areas of fixed income. The lower available risk levels of the Core portfolio strategy demonstrate capital preservation objectives, as the shorter-term fixed income exposures likely possess less credit and duration risk. Clients invested in the Core portfolio at conservative allocation levels will likely therefore not experience as significant drawdowns in the event of waves of defaults or upward swings in interest rates. Inflation-protected securities also help buffer the lower risk levels from upward drafts in inflation. IV. Tax Management Using Municipal Bonds For investors with taxable accounts, portfolio returns may be further improved on an after-tax basis by utilizing municipal bonds. This is because the interest from municipal bonds is exempt from federal income tax. To take advantage of this, the Betterment Core portfolio strategy in taxable accounts is also tilted toward municipal bonds because interest from municipal bonds is exempt from federal income tax, which can further optimize portfolio returns. Other types of bonds remain for diversification reasons, but the overall bond tax profile is improved by tilting towards municipal bonds. For investors in states with some of the highest tax rates—New York and California—Betterment can optionally replace the municipal bond allocation with a more narrow set of bonds for that specific state, further saving the investor on state taxes. Betterment customers who live in NY or CA can contact customer support to take advantage of state specific municipal bonds. V. The Value Tilt Portfolio Strategy Existing Betterment customers may recall that historically the Core portfolio strategy held a tilt to value companies, or businesses that appear to be potentially undervalued based on metrics such as price to earnings ratios. The latest iteration of the Core portfolio strategy, however, has deprecated this explicit tilt that was expressed via large-, mid-, and small-capitalization U.S. value stock ETFs, while maintaining some exposure to value companies through broad market U.S. stock funds. We no longer favor allocating to value stock ETFs within the Core portfolio strategy in large part as a result of our adoption of a broad market benchmark, which highlights the idiosyncratic nature of such tilts, sometimes referred to as “off benchmark bets.” We believe our chosen benchmark that represents stocks through the MSCI ACWI, which holds a more neutral weighting to value stocks, more closely aligns with the risk and return expectations of Betterment’s diverse range of client types across individuals, financial advisors, and 401(k) plan sponsors. Additionally, as markets have grown more efficient and value factor investing more popularized, potentially compressing the value premium, we have a marginally less favorable view of the forward-looking, risk-adjusted return profile of the exposure. That being said, we have not entirely lost conviction in the research supporting the prudence of value investing. The value factor’s deep academic roots drove decisions to incorporate the value tilt into Betterment’s portfolios from the company’s earliest days. For investors who wish to remain invested in a value strategy, we have added the Value Tilt portfolio strategy, a separate option from the Core portfolio strategy to our investing offering. The Value Tilt portfolio strategy maintains the Core portfolio strategy’s global diversification across stocks and bonds while including a sleeve within the stock allocation of large-, mid-, and small-capitalization U.S. value funds. We calibrated the size of the value fund exposure based on a certain target historical tracking error to the backtested performance of the latest version of the Core portfolio strategy. Based on this approach, investors should expect the Value Tilt portfolio strategy to generally perform similarly to Core, with the potential to under- or outperform based on the return of U.S. value stocks. With the option to select between the Value Tilt portfolio strategy or a Core now without an explicit allocation to value, the investment flexibility of the Betterment platform has improved. VI. Innovative Technology Portfolio Strategy In 2021, Betterment launched the Innovative Technology portfolio strategy to provide access to the thematic trend of technological innovation. The premise of investing in this theme is that your investments incorporate exposure to the companies that are seeking to shape the next industrial revolution. Similar to the Value Tilt portfolio, the Core portfolio strategy is used as the foundation of construction for the Innovative Technology portfolio. With this portfolio strategy, we calibrated the size of the innovative technology fund exposure based on a certain target historical tracking error to the backtested performance of the latest version of the Core portfolio strategy. Through this process, the Innovative Technology portfolio maintains the same globally diversified, low-cost approach that is found in Betterment’s investment philosophy. The portfolio however has increased exposure to risk given that innovation requires a long-term view, and may face uncertainties along the way. It may outperform or underperform depending on the return experience of the innovative technology fund exposure and the thematic landscape. VII. Conclusion After setting the strategic weight of assets in the Betterment Core portfolio strategy, the next step in implementing the portfolio construction process is Betterment’s investment selection, which selects the appropriate ETFs for the respective asset exposure in a generally low-cost, tax-efficient way. In keeping with our philosophy, that process, like the portfolio construction process, is executed in a systematic, rules-based way, taking into account the cost of the fund and the liquidity of the fund. Beyond ticker selection is our established process for allocation management—how we advise downgrading risk over time—and our methodology for automatic asset location, which we call Tax Coordination. Finally, our overlay features of automated rebalancing and tax-loss harvesting are designed to be used to help further maximize individualized, after-tax returns. Together these processes put our principles into action, to help each and every Betterment customer maximize value while invested at Betterment and when they take their money home. VIII. Citations 1 Markowitz, H., "Portfolio Selection".The Journal of Finance, Vol. 7, No. 1. (Mar., 1952), pp. 77-91. 2 Black F. and Litterman R., Asset Allocation Combining Investor Views with Market Equilibrium, Journal of Fixed Income, Vol. 1, No. 2. (Sep., 1991), pp. 7-18. Black F. and Litterman R., Global Portfolio Optimization, Financial Analysts Journal, Vol. 48, No. 5 (Sep. - Oct., 1992), pp. 28-43. 3 Litterman, B. (2004) Modern Investment Management: An Equilibrium Approach. 4 Note that the risk aversion parameter is essentially a free parameter. 5 Ilmnen, A., Expected Returns.

Meet the Innovative Technology Portfolio If you believe in the power of tech to blaze new trails, you can now tailor your investing to track the companies leading the way. The most valuable companies of today aren’t the same bunch as 20 years ago. With each generation comes new challengers and new categories (Hello, Big Tech). And while we can’t really predict the next class of top performers, innovation will likely come from parts of the economy that use technology in new and exciting applications, industries like: semiconductors clean energy virtual reality artificial intelligence nanotechnology This dynamic led us to create the Innovative Technology portfolio. What is the Innovative Technology Portfolio? The portfolio increases your exposure to companies pioneering the technology mentioned above and more. These innovations carry the potential to reshape the way we work and play, and in the process shape the market’s next generation of high-performing companies. Using the Core portfolio as its foundation, the Innovative Technology portfolio is built to generate long-term returns with a diversified, low-cost approach, but with increased exposure to risk. It contains many of the same investments as Core, but also includes an allocation to the SPDR S&P Kensho New Economies Composite ETF (Ticker: KOMP). For a more in-depth look at the portfolio’s methodology, skip over to its disclosure. How are pioneering companies selected? The Kensho index that KOMP tracks uses a special branch of artificial intelligence called Natural Language Processing to screen regulatory data and identify companies helping drive the Fourth Industrial Revolution. After picking companies across more than 20 categories, each is combined into the overall index and weighted according to their risk and return profiles. Why might you choose this portfolio over Betterment’s Core portfolio? We built the Innovative Technology portfolio to perform more or less the same as an equivalent stock/bond allocation of the Core portfolio. It may, however, outperform or underperform depending on the return experience of KOMP and the companies this fund tracks. So, if you believe the emerging tech of today will drive the returns of tomorrow—and are willing to take on some additional risk to take that long-term view— this is a portfolio made with you in mind. Risk and early adoption can tend to go hand-in-hand, after all. Why invest in innovation with Betterment? Innovative technology is in our DNA. We may be the largest independent digital financial advisor now, but the “robo advisor” category barely existed when we opened shop in 2008. If you choose to invest in the Innovative Technology portfolio with Betterment, you not only get our professional, tech- forward, portfolio management tools, you also get an investment manager with first-hand experience in the field of first movers.