Updated July 2026 · 8 min read
Financial Disclaimer: This article is general educational information, not individualized financial, tax, or investment advice. Everyone's situation differs. Consult a fiduciary advisor or a tax professional before making decisions with real money.
Nurses are busy, and the last thing a person coming off three back-to-back twelves wants is a portfolio that needs babysitting. The three-fund portfolio — popularized by the Bogleheads community — is the antidote: three broad, cheap index funds that together own almost every investable company on earth, take about ten minutes a year to maintain, and quietly beat most professionally managed money over time.
Each fund is a broad index fund, meaning it buys a tiny slice of thousands of securities rather than betting on a handful of stock-pickers' favorites.
| Fund | What it owns | Job in the portfolio |
|---|---|---|
| US total stock market | Essentially every US public company, large to small | Your core growth engine |
| Total international stock | Developed + emerging markets outside the US | Diversifies away from any one country |
| Total bond market | Broad US investment-grade bonds | Stability — cushions the stock swings |
That's it. No sector bets, no individual stocks, no "hot" funds. Three holdings cover the whole map.
The case for indexing is boring and well-supported: after fees, the majority of actively managed funds fail to beat their benchmark index over long periods. You are not paying a manager to try (and usually fail) to outguess the market — you're simply owning the market at rock-bottom cost. Fewer funds also means fewer overlapping holdings, less tinkering, and less temptation to chase last year's winner.
The one real decision is your split between stocks (US + international) and bonds. More stock means more growth and more stomach-churning drops; more bonds means smoother rides and slower growth. A rough starting framework many nurses use:
| Life stage | Stocks / Bonds (example) | Rationale |
|---|---|---|
| 20s–30s, long runway | 90 / 10 | Decades to recover from downturns; prioritize growth |
| 40s, mid-career | 75 / 25 | Still growing, adding a little ballast |
| 50s, nearing goals | 60 / 40 | Protecting what you've built |
Within the stock portion, a common approach is to hold roughly 20–40% of stocks internationally and the rest in the US. There's no single "correct" number — pick a split you can hold through a bad year without panic-selling, because the allocation you can stick with beats the "optimal" one you abandon.
Most hospital 403(b) and 457(b) menus include a total-market or S&P 500 index fund, an international index fund, and a bond index fund — the exact ingredients you need. If your plan's menu is thin, get as close as you can (an S&P 500 fund is a fine stand-in for US total market), and use your Roth IRA or taxable brokerage, where you have full fund choice, to fill any gaps. Keep an eye on expense ratios and pick the cheapest index option in each category.
Over time, a strong stock year pushes your 90/10 toward 93/7. Once a year, rebalance: sell a little of what grew and buy what lagged to return to your target. Inside a 403(b) or IRA this triggers no tax. Better yet, direct new contributions toward the underweight fund so you rarely have to sell at all. That annual nudge — plus ignoring the news the other 364 days — is the entire maintenance routine.
Related: Index fund investing for nurses, Taxable brokerage accounts, Target-date funds, and Your nurse FIRE number.
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