Terra Research · 401(k) funds vs. S&P 500

401(k) Fund Comparison: Funds vs. S&P 500

What happened to a one-time investment in representative 401(k)-style funds compared with the S&P 500? The core study uses 20 complete calendar years — 2006 through 2025 — with dividends and fund distributions reinvested. Stable-value funds are intentionally excluded.

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What the 20-year sample says

SPY: $10,000 became

Nominal total return, 2006–2025, with dividends reinvested.

Clearly beat SPY
4 funds

FBGRX, FCNTX, VIGAX and FLCSX in this selected long-history sample.

SPY annualized return

Compound annual growth rate across the 20 full calendar years.

Important: this is not a claim that every 401(k) fund should beat the S&P 500. Bond, balanced and target-date funds deliberately take less equity risk or diversify beyond U.S. large-cap stocks. The useful question is whether a fund delivered enough benefit — diversification, lower drawdowns, or convenience — to justify the return difference for the investor who owned it.

Growth of the same starting investment

Bars show ending value after compounding each fund's published annual total return for calendar years 2006–2025. SPY is the reference line.

See the compounding path year by year

Choose up to six funds. The chart begins at the same dollar amount at year-end 2005, then applies each calendar year's total return.

What each fund charges each year

An expense ratio is the percentage of fund assets used each year to pay the fund's operating and management expenses. You do not normally receive a separate bill — the cost is taken inside the fund and reduces the return you receive.

SPY expense ratio
0.0945%
About $9.45 per year for each $10,000 invested.
Lowest in 20-year sample
0.04%
About $4 per $10,000. Several Vanguard index funds are at this level.
Highest in 20-year sample
0.74%
About $74 per $10,000 for the FCNTX share class shown.
Important: the historical total returns on this page are already after the fund's operating expenses, so the calculator does not subtract these fees a second time. Also, many employer 401(k) plans use institutional share classes that can have a different — often lower — expense ratio than the public share class shown here. Always compare the ticker or share-class name on your own plan statement.

Tax note: this is a 401(k) study

Why taxes are not deducted here: the purpose of this page is to compare investments commonly used inside workplace retirement plans. Trading, dividends, and fund capital-gain distributions inside a 401(k) generally do not create the same current annual capital-gains tax bill as they can in a taxable brokerage account. Traditional 401(k) withdrawals have their own tax rules later.

If you hold similar funds in a taxable account: portfolio turnover, dividends, realized gains, and fund capital-gain distributions can affect what you keep after taxes. Terra does not yet rank these 401(k) funds by tax efficiency because that would require current, fund-specific turnover and distribution data. Learn how taxable-account taxes work or estimate your tax drag.

20-year results: 2006–2025

What does CAGR mean?
CAGR stands for Compound Annual Growth Rate. It is the single annual growth rate that would have turned the starting investment into the ending value over the full period, assuming the investment compounded at a steady rate.

For example, a 10% CAGR does not mean the fund earned exactly 10% every year. Actual yearly returns may have been much higher or lower. CAGR simply gives you one number that summarizes the investment's overall compounded growth and makes long-term comparisons easier.
TickerFundTypeExpense ratioAnnual cost on $10k20-yr CAGR$10k ending valuevs. SPY ending value

Newer / supplemental 10-year funds

These are shown separately because the horizon is different. The figures are trailing 10-year annualized total-return estimates reported by the cited data sources in July–August 2026. They should not be ranked directly against the 2006–2025 table.

TickerFundTypeExpense ratioAnnual cost on $10k10-yr CAGR$10k ending value

What stands out

Growth exposure mattered. The strongest results in this sample came from growth-heavy stock funds. Fidelity Blue Chip Growth, Fidelity Contrafund and Vanguard Growth Index all finished well above SPY over the 2006–2025 window. That came with substantial equity concentration and drawdown risk — not a free lunch.
Low-risk funds were doing a different job. VBTLX and balanced funds lagged SPY substantially, but comparing them purely on return ignores their intended role: reducing volatility, providing bonds, or moderating portfolio risk.
The simple index benchmark was hard to beat. Several diversified stock and allocation funds trailed SPY despite having long histories. Vanguard 500 Index tracked the same underlying market and finished essentially alongside SPY, as expected.
Target-date funds trade some upside for diversification. The 10-year supplemental group shows many target-date funds below the S&P 500's recent long-run pace. That does not automatically mean they failed; their glide paths hold international stocks and bonds and become more conservative over time.
Fees matter, but they are not the whole story. The lowest-cost funds in the study charge only a few dollars per $10,000 per year, while several actively managed funds charge $50–$75. Some of those higher-cost growth funds still beat SPY over this particular 20-year period, showing that cost should be evaluated alongside return, risk, and investment objective.

Methodology & sources

Core 20-year study: annual nominal total returns for 2006–2025 were transcribed from Total Real Returns, which states that its figures include reinvested dividends/distributions. Each annual return was compounded from an initial investment; no later contributions or withdrawals were assumed. Source pages include SPY, VFIAX, VTSAX, VIGAX, VVIAX, VIMAX, VSMAX, FCNTX, FBGRX, FLCSX, VBIAX, VWELX, PRWCX, FBALX, VBTLX and FFFFX at totalrealreturns.com.

Supplemental 10-year study: trailing 10-year annualized figures were taken from Total Real Returns and PortfoliosLab pages available in July–August 2026. Because those are trailing returns rather than the fixed 2006–2025 calendar window, they are intentionally displayed separately.

Expense ratios: current 2026 expense ratios were checked against fund-sponsor pages, prospectuses, or major brokerage fund-research pages. The figure shown is for the exact ticker/share class in this study. Where a current net expense ratio was available, the net figure is used; PRWCX, for example, is shown at 0.71% net versus 0.74% gross. SPY is shown at its 0.0945% gross expense ratio.

Selection: this is a representative research set of widely recognized 401(k)-style mutual funds across U.S. stock, balanced/allocation, target-date, international and bond categories. It is not a definitive ranking of the 25 largest funds in every employer plan. Actual 401(k) menus vary by employer and may use institutional share classes with slightly different expenses and returns.

Past performance does not predict future results. This tool is educational and does not account for participant contributions, employer matches, risk tolerance, sequence of returns, or differences in investment objectives. Because this is framed as a 401(k) comparison, it also does not subtract annual taxable-account tax drag. If these funds are held in a taxable account, distributions and turnover may change after-tax results.