How to Build a Simple 60/40 Portfolio With Two Funds from Vanguard and Fidelity
A good portfolio does not need 12 funds, daily trading, or a complicated spreadsheet. For many long-term investors, two broad funds can do the main job: one stock fund for growth and one bond fund for stability.
That is the idea behind a 60/40 portfolio. It puts 60% of your money in stocks and 40% in bonds. The stock side gives the portfolio room to grow. The bond side can help reduce the shock when stocks fall.
This approach is not magic, and it will not protect you from every loss. But it is simple, diversified, and easy to maintain. That is why it has been a common starting point for retirement savers, taxable investors, and people who want a balanced portfolio without becoming market watchers.
This article is for education only and is not personalized financial advice. Your taxes, income needs, time horizon, and risk tolerance all matter.
A 60/40 portfolio gives each fund a clear job
A 60/40 portfolio divides your investments into two main asset classes:
60% stocks
This side aims for long-term growth. Stocks can rise sharply over time, but they can also drop fast and stay down for a while.
40% bonds
This side aims for income and stability. Bonds can still lose value, especially when interest rates rise, but they often move less dramatically than stocks.
The mix is popular because it balances two needs that often compete with each other. Investors want growth, but they also want to avoid panic when markets become rough. A portfolio that is 100% stocks may grow more over long periods, but it can be hard to hold during major downturns. A portfolio that is mostly bonds may feel steadier, but it may not grow enough for a long retirement.
The 60/40 split sits in the middle.
It can help with several goals:
Lower volatility than an all-stock portfolio
Broad diversification with very few moving parts
Easier rebalancing because the target is clear
A built-in way to buy what has lagged and trim what has run ahead
A structure that works in retirement accounts and taxable accounts
The key is using broad funds, not narrow bets. A total stock market fund owns shares across many companies. A broad bond index fund owns many bonds across different issuers and maturities. Together, they can give you exposure to a large part of the market without picking individual stocks or bonds.
A simple two-fund portfolio also reduces decision fatigue. You do not need to decide whether to add a small-cap fund, a dividend fund, a sector fund, or a foreign bond fund before you get started. Those choices can matter in some plans, but they are not required to build a useful core.
That simplicity is a feature. If a portfolio is easy to understand, it is usually easier to stick with when headlines are loud.
The two-fund choices from Vanguard and Fidelity are straightforward
The cleanest version uses one broad U.S. stock market fund and one broad U.S. bond market fund. Vanguard and Fidelity both offer low-cost index funds that fit this role well.
There are two ways to think about the fund lineup:
Mutual funds, which trade once per day after the market closes
ETFs, which trade throughout the day like stocks
Either can work. Many retirement accounts use mutual funds. Many taxable brokerage accounts use ETFs. The right format often depends on where you invest and how you prefer to place orders.
Vanguard two-fund 60/40 portfolio
A common Vanguard setup is:
Portfolio role | Mutual fund option | ETF option | Allocation |
U.S. stocks | Vanguard Total Stock Market Index Fund Admiral Shares, VTSAX | Vanguard Total Stock Market ETF, VTI | 60% |
U.S. bonds | Vanguard Total Bond Market Index Fund Admiral Shares, VBTLX | Vanguard Total Bond Market ETF, BND | 40% |
VTSAX and VTI both track the broad U.S. stock market. They give exposure to large, mid-sized, and small companies in one fund.
VBTLX and BND both track the broad U.S. investment-grade bond market. They hold a mix of Treasury, government-related, and corporate bonds.
If you already use Vanguard, the mutual fund route can be very convenient. If you prefer ETFs, VTI and BND are widely used and easy to understand.
Fidelity two-fund 60/40 portfolio
A common Fidelity setup is:
Portfolio role | Mutual fund option | Possible alternative | Allocation |
U.S. stocks | Fidelity Total Market Index Fund, FSKAX | Fidelity ZERO Total Market Index Fund, FZROX | 60% |
U.S. bonds | Fidelity U.S. Bond Index Fund, FXNAX | Fidelity Investment Grade Bond Fund choices may also fit some accounts | 40% |
FSKAX is Fidelity’s broad U.S. total stock market index fund. It is often the simpler default choice for a total market stock allocation at Fidelity.
FZROX is also a total market-style fund, and it is known for having no expense ratio. The tradeoff is that Fidelity ZERO funds are proprietary Fidelity mutual funds. If you later move your account to another brokerage, you may need to sell the fund first. In a retirement account, that may not create a tax issue. In a taxable account, selling can create taxable gains.
FXNAX is Fidelity’s broad U.S. bond index fund. It can serve the bond role in the same way BND or VBTLX would at Vanguard.
For most people building a simple Fidelity version, FSKAX plus FXNAX is the easiest fund pair to understand and maintain.
Should the stock fund include international stocks?
A classic two-fund 60/40 portfolio often uses a U.S. total stock market fund and a U.S. total bond market fund. That is simple, but it leaves out international stocks.
Some investors prefer a global stock fund instead of a U.S.-only stock fund. For example, at Vanguard, a global stock option would be Vanguard Total World Stock ETF, VT. At Fidelity, investors may combine U.S. and international funds, but that would move beyond a two-fund structure if the bond fund stays in place.
There is no single perfect answer. A U.S.-only two-fund portfolio is clean and easy. A global stock allocation is more diversified by country, but the two-fund setup may become harder to keep if your brokerage does not offer one all-in-one global stock mutual fund that matches your needs.
If simplicity is the main goal, start with broad U.S. stock and bond index funds. If global diversification is a priority, make that choice deliberately rather than adding funds at random.
Use a simple process to allocate the money
The math is easy once you know your total amount. Multiply the account value by 60% for stocks and 40% for bonds.
If you are investing $10,000, the target would be:
Fund role | Percentage | Dollar amount |
Stock fund | 60% | $6,000 |
Bond fund | 40% | $4,000 |
Total | 100% | $10,000 |
If you are investing $50,000, the target would be:
Fund role | Percentage | Dollar amount |
Stock fund | 60% | $30,000 |
Bond fund | 40% | $20,000 |
Total | 100% | $50,000 |
The dollar amounts change, but the formula stays the same.
Step 1. Choose the brokerage and fund pair
Pick one brokerage first. Then pick the fund pair that matches it.
At Vanguard, a clean pair would be:
VTSAX and VBTLX
VTI and BND
At Fidelity, a clean pair would be:
FSKAX and FXNAX
FZROX and FXNAX, if you understand the portability tradeoff
Try not to mix choices before you have a reason. For example, holding VTI at Fidelity can be perfectly fine, but a Fidelity mutual fund pair may allow easier automatic investing, depending on the account.
Step 2. Decide which account will hold the portfolio
A 60/40 portfolio can sit inside a single account, such as an IRA. It can also be spread across multiple accounts, such as a 401(k), Roth IRA, traditional IRA, and taxable brokerage account.
The simplest approach is to keep the two funds in one account. That makes rebalancing easy.
If you use multiple accounts, think in terms of your whole household portfolio, not each account in isolation. One account may hold more bonds while another holds more stocks. What matters is the total mix.
For example:
Account | Stock fund | Bond fund | Total |
Roth IRA | $24,000 | $0 | $24,000 |
Traditional IRA | $6,000 | $20,000 | $26,000 |
Combined portfolio | $30,000 | $20,000 | $50,000 |
The combined portfolio is still 60/40, even though each account looks different.
This can be useful for tax planning. Some investors prefer to hold bond funds in tax-advantaged accounts because bond income can be taxed each year in a taxable account. Tax rules vary by situation, so get tax guidance if the account size is meaningful or the situation is complex.
Step 3. Place the trades carefully
Before buying, check a few details:
The exact ticker symbol
Whether you are buying a mutual fund or ETF
Minimum investment rules, if any
Transaction fees, if any
Whether dividend and interest payments will reinvest
For mutual funds, you usually enter a dollar amount. For ETFs, you may buy shares, and some brokerages allow fractional shares.
If you are investing a large lump sum and feel nervous about buying all at once, you can invest over several months. This is called dollar-cost averaging. It may reduce regret if the market falls soon after your first purchase, but it can also leave money uninvested if the market rises. The best choice is often the one you can actually complete without second-guessing every market move.
Step 4. Set future contributions to match the target
If you invest monthly, direct 60% of each contribution to the stock fund and 40% to the bond fund.
For a $500 monthly contribution:
Fund role | Monthly amount |
Stock fund | $300 |
Bond fund | $200 |
Total | $500 |
This keeps the portfolio close to target without frequent selling. In many accounts, new contributions are the easiest rebalancing tool.
If stocks have fallen and your allocation has drifted to 55/45, you can direct more new money to stocks for a while. If stocks have surged and your allocation is 68/32, you can direct more new money to bonds.
Step 5. Turn on reinvestment unless you need income
If you are still building wealth, reinvesting dividends and bond interest keeps the money working. Most brokerages let you choose automatic reinvestment.
