FXNAX vs VBTLX: which was the better investment?
Fidelity U.S. Bond Index Fund against Vanguard Total Bond Market Index Fund Admiral Shares on real daily total-return data — every dividend reinvested, from May 4, 2011 to Aug 28, 2026.
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Frequently asked questions
Did FXNAX beat VBTLX?
It was effectively a tie over the full overlap period (May 4, 2011 to Aug 28, 2026): $10,000 grew to $13,817 in FXNAX and $13,909 in VBTLX, a difference of under 2%.
What would $10,000 in FXNAX be worth today?
$10,000 invested in Fidelity U.S. Bond Index Fund (FXNAX) on May 4, 2011 would be worth about $13,817 as of Aug 28, 2026, a total return of 38.2% (2.1% per year). The same $10,000 in VBTLX would be worth $13,909.
Which was riskier — FXNAX or VBTLX?
FXNAX swung with an annualized volatility of 4.5% and a worst peak-to-trough drop of -18.6%; VBTLX ran at 4.5% volatility with a -18.7% maximum drawdown. Risk-adjusted (Sharpe ratio), that is 0.03 for FXNAX vs 0.04 for VBTLX.
What data is this comparison based on?
Daily adjusted closing prices covering May 4, 2011 through Aug 28, 2026 — the full period where both assets have price history. Adjusted prices include dividends and splits, so these are total returns. The page refreshes with new market data every day.
Can I change the dates, amounts, or add monthly investing?
Yes — the interactive tool on this page is pre-loaded with FXNAX vs VBTLX. You can set any start and end date, change the starting amount, add monthly contributions, or build a multi-asset portfolio and compare it against any benchmark.