FSPWX vs. FXAIX
Compare and contrast key facts about Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX) and Fidelity 500 Index Fund (FXAIX).
FSPWX is a passively managed fund by Fidelity that tracks the performance of the Bloomberg U.S. Treasury Inflation Protected Securities Index. It was launched on Aug 16, 2024. FXAIX is a passively managed fund by Fidelity that tracks the performance of the S&P 500 Index. It was launched on Feb 17, 1988. Both FSPWX and FXAIX are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.
Performance
FSPWX vs. FXAIX - Performance Comparison
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FSPWX vs. FXAIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | |
|---|---|---|---|
FSPWX Fidelity SAI Inflation-Protected Bond Index Fund | 0.50% | 6.76% | -1.32% |
FXAIX Fidelity 500 Index Fund | -7.05% | 17.84% | 6.09% |
Returns By Period
In the year-to-date period, FSPWX achieves a 0.50% return, which is significantly higher than FXAIX's -7.05% return.
FSPWX
- 1D
- 0.70%
- 1M
- -1.27%
- YTD
- 0.50%
- 6M
- 0.41%
- 1Y
- 2.99%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
FXAIX
- 1D
- -0.39%
- 1M
- -7.68%
- YTD
- -7.05%
- 6M
- -4.59%
- 1Y
- 14.42%
- 3Y*
- 17.17%
- 5Y*
- 11.40%
- 10Y*
- 13.75%
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FSPWX vs. FXAIX - Expense Ratio Comparison
FSPWX has a 0.05% expense ratio, which is higher than FXAIX's 0.02% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Return for Risk
FSPWX vs. FXAIX — Risk / Return Rank
FSPWX
FXAIX
FSPWX vs. FXAIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX) and Fidelity 500 Index Fund (FXAIX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| FSPWX | FXAIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.84 | 0.84 | 0.00 |
Sortino ratioReturn per unit of downside risk | 1.17 | 1.30 | -0.12 |
Omega ratioGain probability vs. loss probability | 1.15 | 1.20 | -0.05 |
Calmar ratioReturn relative to maximum drawdown | 1.41 | 1.05 | +0.36 |
Martin ratioReturn relative to average drawdown | 4.38 | 5.13 | -0.75 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| FSPWX | FXAIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.84 | 0.84 | 0.00 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 0.68 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.77 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.88 | 0.75 | +0.13 |
Correlation
The correlation between FSPWX and FXAIX is 0.13, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
FSPWX vs. FXAIX - Dividend Comparison
FSPWX's dividend yield for the trailing twelve months is around 4.17%, more than FXAIX's 1.20% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FSPWX Fidelity SAI Inflation-Protected Bond Index Fund | 4.17% | 4.19% | 0.69% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
FXAIX Fidelity 500 Index Fund | 1.20% | 1.11% | 1.25% | 1.45% | 1.69% | 1.22% | 1.60% | 2.06% | 2.72% | 1.97% | 2.52% | 2.83% |
Drawdowns
FSPWX vs. FXAIX - Drawdown Comparison
The maximum FSPWX drawdown since its inception was -3.84%, smaller than the maximum FXAIX drawdown of -33.79%. Use the drawdown chart below to compare losses from any high point for FSPWX and FXAIX.
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Drawdown Indicators
| FSPWX | FXAIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -3.84% | -33.79% | +29.95% |
Max Drawdown (1Y)Largest decline over 1 year | -2.91% | -12.13% | +9.22% |
Max Drawdown (5Y)Largest decline over 5 years | — | -24.50% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -33.79% | — |
Current DrawdownCurrent decline from peak | -1.27% | -8.89% | +7.62% |
Average DrawdownAverage peak-to-trough decline | -1.04% | -3.83% | +2.79% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.94% | 2.50% | -1.56% |
Volatility
FSPWX vs. FXAIX - Volatility Comparison
The current volatility for Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX) is 1.44%, while Fidelity 500 Index Fund (FXAIX) has a volatility of 4.24%. This indicates that FSPWX experiences smaller price fluctuations and is considered to be less risky than FXAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FSPWX | FXAIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.44% | 4.24% | -2.80% |
Volatility (6M)Calculated over the trailing 6-month period | 2.29% | 9.08% | -6.79% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.10% | 18.13% | -14.03% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.17% | 16.88% | -12.71% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.17% | 18.03% | -13.86% |