FSPGX vs FXAIX
Fidelity Large Cap Growth Index Fund vs Fidelity 500 Index Fund
Which is better, FSPGX or FXAIX?
Large Cap Growth against Large Cap Blend.
FXAIX has a lower expense ratio. FSPGX led over 3Y, FXAIX over 1Y, 5Y and the full window. The two have moved almost in lockstep, correlation 0.93. FXAIX is less concentrated, with 36.4% of the fund in its ten largest positions against 60.7%.
MarketXLS is not an investment adviser. This comparison is generated automatically from market data and is for information only. A Best mark means the better reading on that one measure, not a recommendation to buy.
Side-by-Side Comparison
| Metric | FSPGX | FXAIX |
|---|---|---|
| Expense Ratio | 0.04% | 0.02%Best |
| AUM | - | $594.0B |
| Dividend Yield | 0.37% | 1.06% |
| Holdings | 392 | 507 |
| YTD Price Return | +4.03% | +11.59%Best |
| 1Y Price Return | +8.23% | +17.26%Best |
| 3Y Price Return (annualized) | +20.56%Best | +19.43% |
| 5Y Price Return (annualized) | +11.08% | +11.35%Best |
| Volatility (annualized) | 18.8% | 15.4%Best |
| Max Drawdown | -34.5% | -25.4%Best |
| $10,000 over 5 years | $16,911 | $17,118Best |
| Top 10 Weight | 60.7% | 36.4%Best |
| Fund Family | Fidelity Investments (US) | Fidelity Investments (US) |
| Category | Equity | Equity |
| Style | Large Cap Growth | Large Cap Blend |
| Inception | Jun 7, 2016 | May 4, 2011 |
Returns are price returns and exclude distributions, because our data feed carries no adjusted close for FSPGX or FXAIX. Both funds are measured the same way, so the comparison holds. FSPGX yields 0.37% and FXAIX 1.06% on top.
Volatility and max drawdown are measured over the window both funds cover: Sep 13, 2021 to Sep 9, 2026 (5 years).
FSPGX vs FXAIX growth
Month-end closes. Both lines start at 0% in the first month shown, so the gap between them is the difference in growth across that window. The full view covers the 5 years both funds cover. Prices exclude distributions, on both funds alike.
FSPGX vs FXAIX Performance
Fidelity Large Cap Growth Index Fund (FSPGX) is a mutual fund from Fidelity Investments (US) and Fidelity 500 Index Fund (FXAIX) is a mutual fund from Fidelity Investments (US). Over the past year FSPGX returned +8.23% while FXAIX returned +17.26%. Year to date, FSPGX is up 4.03% versus a gain of 11.59% for FXAIX.
Over three years, FSPGX compounded at +20.56% per year against +19.43% for FXAIX; over five years the annualized figures are +11.08% and +11.35% respectively.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
FSPGX has been the more volatile fund, with annualized monthly volatility of 18.8% compared with 15.4% for FXAIX. Lower volatility generally means a smoother ride, though it often comes with lower long-run returns.
The deepest peak-to-trough decline in our data was -34.5% for FSPGX and -25.4% for FXAIX. Drawdown depth is what each fund did in the worst stretch of the window measured above.
The two funds' monthly returns correlate at 0.93. They move almost in lockstep, so holding both mostly duplicates the same exposure.
Fees and Cost Over Time
FSPGX charges 0.04% per year while FXAIX charges 0.02%. On a $10,000 position that is $4 vs $2 annually, a gap of $2 per year that compounds over a long holding period. On income, FSPGX currently yields 0.37% against 1.06% for FXAIX.
Holdings Overlap
95.7% of FSPGX's money is in holdings FXAIX also owns. 65.8% of FXAIX's money is in holdings FSPGX also owns.
Most of FSPGX is already inside FXAIX. Owning both mostly buys the same companies twice.
The two holdings books were reported 61 days apart, FSPGX as of Apr 30, 2026 and FXAIX as of Jun 30, 2026, so some of the difference between them is the time between the two reports rather than the funds.
191 positions in common, counted across the 390 positions we hold weights for in FSPGX and 508 in FXAIX, against full books of 392 and 507.
What only one of them owns
Our book lists 305 positions for FXAIX that do not appear in our book for FSPGX (33.4% of the fund), and 130 for FSPGX that do not appear in FXAIX (4.0%).
Some of those will be the same company recorded under a different code in one of the two books, so the real difference in what you would own is no larger than this and may be smaller. We do not name the individual positions here for that reason.
Top Shared Holdings
| Stock | Weight in FSPGX | Weight in FXAIX | Difference |
|---|---|---|---|
| NVDANvidia Corp. | 13.22% | 7.51% | 5.71% |
| AAPLApple, Inc | 11.12% | 6.59% | 4.53% |
| MSFTMicrosoft Corp 4.100 Feb 06 37 | 8.68% | 4.30% | 4.38% |
| AMZNAmazon.Com Inc | 5.30% | 3.62% | 1.68% |
| AVGOBroadcom Inc | 5.77% | 2.77% | 3.00% |
| GOOGLAlphabet A Usd 0.001 | 4.23% | 3.25% | 0.98% |
| GOOGAlphabet Inc | 3.42% | 2.59% | 0.83% |
| METAMeta Platforms, Inc. | 3.30% | 1.92% | 1.38% |
| TSLATesla Inc | 3.26% | 1.84% | 1.42% |
| LLYEli Lilly & Co. | 2.41% | 1.47% | 0.94% |
95.7% of FSPGX is already inside FXAIX.
You probably hold more than these two. Add the rest and see how much of the whole book is the same companies twice.
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Frequently Asked Questions
Which is cheaper, FSPGX or FXAIX?
FSPGX has an expense ratio of 0.04% while FXAIX charges 0.02%. FXAIX is the cheaper option, by $2 a year on a $10,000 investment.
Which performed better, FSPGX or FXAIX?
Over the past year FSPGX returned +8.23% vs +17.26% for FXAIX, so FXAIX leads on 1-year performance. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, FSPGX or FXAIX?
FSPGX has been the more volatile fund at 18.8% annualized versus 15.4% for FXAIX. Worst drawdown: FSPGX -34.5% vs FXAIX -25.4%.
Should I hold both FSPGX and FXAIX?
FSPGX and FXAIX have a monthly-return correlation of 0.93, so they move almost identically. What is left to separate them is the fee and the index each one tracks. This is information, not a recommendation.
What is the holdings overlap between FSPGX and FXAIX?
95.7% of FSPGX's money is in holdings FXAIX also owns. 65.8% of FXAIX's is in holdings FSPGX also owns. They hold 191 positions in common, counted across the 390 positions we hold weights for in FSPGX and 508 in FXAIX.
Which pays a higher dividend, FSPGX or FXAIX?
FSPGX yields 0.37% while FXAIX yields 1.06%, so FXAIX currently pays the higher dividend yield.
Is FXAIX better than FSPGX?
FXAIX has a lower expense ratio. FSPGX led over 3Y, FXAIX over 1Y, 5Y and the full window. The two have moved almost in lockstep, correlation 0.93. FXAIX is less concentrated, with 36.4% of the fund in its ten largest positions against 60.7%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.