When Warren Buffett talks, investors listen. But instead of flashy stock tips or complicated strategies, he’s offered something radically simple; a 2-fund portfolio anyone can build. With just 90% in a low-cost S&P 500 index fund and 10% in short-term government bonds, this strategy is more than theory. It’s the exact plan Buffett recommends for his own family.1
Why? Because it works.
This simple approach outpaces most pros, keeps fees low, reduces emotional mistakes, and delivers real long-term results. Whether you’re just getting started or rethinking your retirement setup, this approach offers growth, simplicity, and peace of mind. And even more; no constant monitoring required.
I’ll break down exactly how this portfolio works, why it’s so effective, and how you can build it for yourself. All backed by data, performance history, and Buffett’s own track record.
» Start investing today: Explore top brokerage accounts with our detailed review
SoFi Invest | 
Webull | 
Vanguard |
Fees $0 per trade | Fees $0 per trade | Fees $0 per trade |
Account Minimum $0 | Account Minimum $0 | Account Minimum $0 |
Promotion Get up to $3,000 in stock when you open and fund a new account with at least $50. Offer ends 10/18/26. | Promotion Receive 12 free shares (valued $3-$300 each) and 1 month of Webull Premium when you open and fund a new account with at least $100. | Promotion None no promotion available at this time |
on SoFi's website | on Webull's website | on Vanguard's website |
What is the Warren Buffett 2-fund portfolio?
Warren Buffett’s 2-fund portfolio strategy is easy to wrap your head around. In his 2013 shareholder letter, he explained that upon his passing, the money in his wife’s trust should be invested as follows:
“10% in short-term government bonds and 90% in a very low-cost S&P 500 index fund.”
That’s it, that simple – just two ingredients:
- S&P 500 index fund: This offers exposure to 500 of the largest U.S. companies. Buffett recommends the Vanguard 500 Index Fund (VOO or VFIAX) for its ultra-low cost.
- Short-term government bonds: Typically VGSH or VSBSX, these provide stability and cash-like safety.
This mix creates an automatic asset allocation with a defined equity portion and fixed income portion, without the need for constant tweaks.
» Stay ahead of your finances: Join our newsletters today
What is an S&P 500 index fund?
An S&P 500 index fund is a broad market index fund that tracks the performance of 500 of the largest U.S. publicly traded companies. That includes well-known names like Apple, Microsoft, and Amazon. Because these companies make up a large portion of the stock market’s total value, investing in them offers a snapshot of how the U.S. economy is doing overall.2
S&P 500 index funds are passive investments, meaning they simply track the market rather than try to beat it. This makes them far less expensive than actively managed funds, which usually carry much higher expense ratios.
What are short-term government bonds?
Short-term government bonds are debt securities issued by the U.S. government that are set to mature in anywhere from one to three years. These are considered extremely safe investments and help reduce overall portfolio volatility.3 They offer a cash buffer during periods of economic downturns and help smooth out your returns. That’s why Buffett includes them even if they only make up a small portion of the portfolio.
» Ready to take control of your finances? Explore the top features of Quicken today
Why Buffett’s simple strategy works over time
There’s a reason Buffett, a man who is known for picking stocks, suggests the average person avoid doing it. Most people, and even most pros, end up underperforming the market over time.
Here’s why his 2-fund approach works:
- Long-term returns: The compound annual growth rate of the S&P 500 has hovered around 10% for decades.4 That means even without doing anything fancy, your money has historically doubled roughly every seven years.
- Low cost index investing: With fees as low as 0.03%, you keep more of your return. Paying 1% to employ high fee managers eats into your long-term growth. High expense ratios compound over time and reduce net returns in a way many investors don’t fully realize.
- Portfolio volatility is reduced: Adding a small fixed income portion helps reduce emotional panic during volatile markets. The stability of government bonds makes it easier for you to stay the course.
- Successful investing involves consistency: No need to worry about picking winners. The broad market index fund holds them all.
- Avoiding serious mistakes: Trying to time the market or chase hot stocks often results in buying high and selling low. This strategy removes that temptation.
This is a lazy portfolio that isn’t just easier to manage, it’s grounded in decades of data, behavioral insights, and simplicity that just works.
How to build your own 2-fund portfolio
You don’t need a robo-advisor, financial advisor, or a large sum of money to get started. Setting up this portfolio is actually quite simple, we’ll break it down for you in 6 simple steps:
1. Choose your stock fund (90%)
Buffett recommends a low cost S&P 500 index fund as the core of this strategy. Some of the most popular and reputable choices include:
- VOO (Vanguard S&P 500 ETF): Trades like a stock with a 0.03% expense ratio
- VFIAX (Vanguard 500 Index Fund Admiral Shares): Mutual fund version, great for retirement accounts
- IVV (iShares Core S&P 500 ETF): Slightly different structure, same exposure
- SPY (SPDR S&P 500 ETF): Oldest and most liquid S&P 500 ETF, but with a slightly higher fee
These funds hold the same 500 large-cap U.S. companies and give you exposure to about 80% of the total market cap of all U.S. equities. They’re great for long-term retirement planning because they offer growth potential, tax efficiency, and automatic diversification.
» MORE: The 3 Best Vanguard ETFs to Own For Life
2. Choose your bond fund (10%)
This part of the portfolio is designed to add stability and reduce portfolio volatility. Buffett suggests short-term government bonds, which are less sensitive to interest rate movements than long-term bonds.5
Recommended funds:
- VGSH (Vanguard Short-Term Treasury ETF): Tracks U.S. Treasury’s with maturities of 1–3 years
- VSBSX (Vanguard Short-Term Treasury Index Fund): Mutual fund version
- Alternatives: SHY (iShares 1–3 Year Treasury Bond ETF), BIL (SPDR Treasury Bill ETF)
These funds offer a low-yield but a reliable anchor to the portfolio. Especially during downturns or when you need to rebalance, this fixed income portion helps you avoid having to sell stocks at a loss.
» Start planning today: See the top annuity providers for a consistent income
3. Open a brokerage account
If you don’t already have one, you’ll need to open an account with a trusted broker. Look for the following:
- No account minimums
- Zero commission trading on ETFs
- Access to both ETFs and mutual funds
- Fractional share investing (for beginners starting with small amounts)
Many of the top brokerage firms also offer Roth IRAs, Traditional IRAs, and other tax-advantaged retirement investing accounts.
|
SoFi Invest |
Webull |
Vanguard |
Fees $0 per trade | Fees $0 per trade | Fees $0 per trade |
Account Minimum $0 | Account Minimum $0 | Account Minimum $0 |
Promotion Get up to $3,000 in stock when you open and fund a new account with at least $50. Offer ends 10/18/26. | Promotion Receive 12 free shares (valued $3-$300 each) and 1 month of Webull Premium when you open and fund a new account with at least $100. | Promotion None no promotion available at this time |
on SoFi's website | on Webull's website | on Vanguard's website |
4. Fund and allocate your portfolio
Let’s say you’re starting with $10,000:
- $9,000 goes into your selected S&P 500 fund (e.g. VOO)
- $1,000 goes into your short-term bond fund (e.g. VGSH)
From there, you can:
- Set up automatic investments monthly or quarterly
- Turn on dividend reinvestment
- Adjust contributions as income grows
5. Rebalance once a year
Over time, your 90/10 ratio will drift as the equity portion grows faster than bonds. Rebalancing annually (or when allocations shift by 5% or more) helps maintain your risk profile. Most brokers let you do this manually or have features that assist with this.
For example, let’s say your portfolio drifts to 94% stocks and 6% bonds, you can sell a small portion of the S&P 500 fund and buy bonds to get back to 90/10 allocation. Another approach, rather than selling and triggering capital gains tax, could be to direct dividends toward your bond exposure, since dividends are taxed whether you reinvest them or not.
» Analyze your investments: Try StockRover’s 2-week free trial today
6. Stay consistent
This is not a strategy you adjust every month. The power of this portfolio comes from sticking with it, even through the market booms and busts.
Even if you’re investing just $100/month, what matters is your consistency, not market timing. Buffett’s approach works precisely because it removes emotion and complexity.
Next up: how this portfolio compares to the pros – and why most of them still lose.
|
SoFi Checking and Savings | 
Openbank High Yield Savings | 
CIT Bank Platinum Savings |
APY Up to 4.20% With eligible direct deposit. No minimum balance required. | APY Up to 4.15% $0 min. balance required for APY. | APY Up to 4.10% $5,000 min. balance required for APY. |
Promotion Up to $400 bonus + 0.90% APY boost six-month APY boost for new customers with eligible direct deposit. Offer ends by 12/31/2026. Terms apply. | Promotion 0.35% APY boost six month APY boost for new customer when you open and fund a new account by 11/03/2026. | Promotion 0.35% APY boost Enter promo code "CITBOOST" to receive a 0.35% APY boost for six months from account opening. Terms apply. |
on SoFi's website | our partner | on CIT Bank's website |
How this approach beats most professionals
Buffett’s portfolio may seem overly simplistic, but its effectiveness is backed by data and decades of performance history. A major proof point came in 2008 when Buffett publicly wagered $1 million that a low-cost S&P 500 index fund would outperform a selection of hand-picked hedge funds over a 10-year period. He won, by a landslide. While the S&P 500 fund earned more than 125%, the hedge funds averaged less than 40%.
This wasn’t just a fluke. According to the SPIVA U.S. Scorecard, the majority of active managers, including those running large pension funds and managing institutional capital, underperform their benchmark over 10- and 15-year horizons. Roughly 85% to 90% of large cap fund managers fail to beat the S&P 500 consistently.6
Why do they fall short? Well, it comes down to three things:
- High fee managers charge hefty expense ratios that, over time, compound and eat into your returns.
- Many engage in market timing or sector bets that backfire during economic downturns.
- Their portfolios often lack the broad diversification that you find in a broad market index fund, which makes them more volatile.
Ironically, even a portfolio chosen at random – or by a “monkey throwing darts” – can sometimes outperform carefully curated funds. That’s not just a humorous analogy. A Princeton professor once demonstrated this using randomized stock picks to mimic index fund performance with surprisingly close results.
As Buffett himself has said: “The trick is not to pick the right company, it’s to own a cross-section of businesses that are bound to do well in America.”
If most investors simply accepted that they cannot consistently beat the market and instead chose to track it, their outcomes would likely fare much better. In short, Buffett’s approach aligns with data and real-world performance.
» Watch this: Why Trying To Time The Market Could Cost You Thousands
What the numbers say about long-term performance
Let’s look at what a simple 90/10 portfolio would have done historically:
- Between 2013 and 2023, the average annual return of this portfolio was around 11-12%.7
- A $100,000 investment would have grown to over $350,000.
- Its worst year saw a drop of about 17%, but its best year posted gains over 28%.
Compare that with most mutual funds and hedge funds that charge between 1% to 2% in management fees, the returns don’t even come close.
Even more, data shows that if you missed just the 10 best trading days over a 30-year investing window, that can cut your total return by more than half. That’s why successful investing involves staying the course and not trying to time the market.
Time in the market beats timing the market, every time.
» Ready to invest for retirement? Check out our review on the top IRA Accounts
SoFi Invest IRA | 
Robinhood IRA | 
Fidelity Investments IRA |
Fees $0 per trade | Fees $0 per trade ($0.50-$0.75 per futures contract) | Fees $0 per online equity trade ($0.65 per options contract) |
Account Minimum $0 | Account Minimum $0 | Account Minimum $0 |
Promotion Earn a 1% match on rollovers and contributions to a SoFi IRA. | Promotion Unlimited 1% IRA match after opening a Robinhood IRA and make eligible contributions, transfers, and rollovers. Terms apply. | Promotion None no promotion available at this time |
on SoFi's website | on Robinhood's website | on Fidelity's website |
When the Buffett portfolio works (and when it doesn’t)
Buffett’s 2-fund portfolio is not a one-size-fits-all solution, but for many it’s very close. It’s a simple and effective approach built for the typical investor who doesn’t want to spend hours on portfolio visualizer tools or run complex backtests.
It works best for:
- Long-term investors focused on retirement planning
- People who want to reduce stress and guesswork
- Those looking for a reasonable alternative to stock picking
However, this portfolio may not be right for:
- Traders seeking short-term profits or sector rotations
- Investors who want exposure to real estate investment trusts, international stocks, gold, cryptocurrency, or other asset classes
- Those seeking guaranteed income in retirement
If you are looking for greater diversification, there’s room to expand this portfolio with a third or even a fourth fund. But for those who just want to start with minimal complexity and emphasizing simplicity, the 2-fund model is more than enough.
» Looking for guaranteed income? Explore today’s top CD rates
Bread Savings CDs | 
Sallie Mae | 
Marcus by Goldman Sachs |
Annual Percentage Yield (APY) 4.50% APY for the listed term length below. | Annual Percentage Yield (APY) 4.50% APY for the listed term length below. | Annual Percentage Yield (APY) 4.40% APY for the listed term length below. |
Term Length 18 months | Term Length Up to 60 month terms | Term Length 18 months |
Min. Deposit $1,500 | Min. Deposit $2,500 | Min. Deposit $500 |
on Bread Savings' website | on Sallie Mae's website | our partner |
Expanding the Buffett model to meet investor goals
While Buffett’s strategy is famously minimalist, investors may want to adjust it depending on age, risk tolerance, and income needs.
Some investors getting close to retirement might increase their fixed income portion to reduce volatility. Others might add international stocks, gold, cryptocurrency, or real estate investment trusts so they have exposure to other asset classes. These tweaks can help deliver greater diversification while still keeping costs low and structure simple.
» Ready to buy cryptocurrency? See the top crypto platforms today
For example, let’s say you decide to add a third fund — such as an international equity ETF. This will give you basic diversification across geographies, which can protect your investment against U.S.-centric downturns. You can also try adding a REIT ETF so you get real estate exposure without sacrificing liquidity.
Just remember: Any additions should complement, not complicate. The simplicity of the original 2-fund strategy is part of what makes it so effective. If you’re modifying it, do so with a clear reason and measured and methodical approach.
Another note: Some investors prefer target date funds or all-in-one ETFs, but those often layer in higher expense ratios and lower transparency. They’re convenient but that convenience does come at a cost. For those who prefer clarity and full control, Buffett’s method still wins.
Investors should also understand that portfolio perform metrics vary over time. But over long horizons, a mix of equity and Treasuries generally outpaces inflation, preserves purchasing power, and supports both accumulation and drawdown phases.
And for those building a legacy, this portfolio is ideal. As Buffett outlined for his wife’s benefit, it’s easy for heirs or trustees to manage without the need for trustee managing funds or high-priced asset managers.
» MORE: Subscribe to the InvestLane YouTube Channel for more investing insights
In the end: simplicity wins more than you think
Buffett’s strategy works not because it’s flashy, but because it’s not. By avoiding the noise, high fees, and complexity of active management, his 2-fund approach delivers results.
It prioritizes:
- Low cost and minimizing expense ratios
- High growth potential through equity exposure
- A built-in cash buffer to manage risk
- A proven, rules-based framework that doesn’t break during market corrections
It also frees up your time, keeps emotions in check, and avoids the serious mistakes that often derail investors chasing the next big thing.
In the end, you don’t need to beat the market to succeed. You just need to avoid beating yourself.
For more insights and tools to build your own low-cost fund portfolio, check out our investing resources and reviews of the best brokerages to start using today.
» Get your free InvestLane score: See how your portfolio aligns with your financial health.
Acorns Invest | 
Wealthfront Automated Investing |
SoFi Automated Investing |
Fees $3-$12 per month | Fees 0.25% management fee | Fees 0.25% management fee |
Account Minimum $0 | Account Minimum $500 | Account Minimum $50 $0 minimum balance |
Promotion Get a $20 bonus when you make your first recurring investment. Terms apply. | Promotion Get a $50 bonus when you fund your first taxable investment account | Promotion None no promotion available at this time |
on Acorns website | our partner | on SoFi's website |
