FSPWX vs. WIW
Compare and contrast key facts about Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX) and Western Asset Inflation-Linked Opportunities & Income Fund (WIW).
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.
Performance
FSPWX vs. WIW - Performance Comparison
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FSPWX vs. WIW - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | |
|---|---|---|---|
FSPWX Fidelity SAI Inflation-Protected Bond Index Fund | 0.50% | 6.76% | -1.32% |
WIW Western Asset Inflation-Linked Opportunities & Income Fund | 0.90% | 13.17% | -0.73% |
Returns By Period
In the year-to-date period, FSPWX achieves a 0.50% return, which is significantly lower than WIW's 0.90% return.
FSPWX
- 1D
- 0.00%
- 1M
- -1.08%
- YTD
- 0.50%
- 6M
- 0.21%
- 1Y
- 2.99%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
WIW
- 1D
- 0.24%
- 1M
- -1.80%
- YTD
- 0.90%
- 6M
- -0.84%
- 1Y
- 5.19%
- 3Y*
- 6.61%
- 5Y*
- 1.99%
- 10Y*
- 3.95%
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FSPWX vs. WIW - Expense Ratio Comparison
Return for Risk
FSPWX vs. WIW — Risk / Return Rank
FSPWX
WIW
FSPWX vs. WIW - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX) and Western Asset Inflation-Linked Opportunities & Income Fund (WIW). 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 | WIW | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.74 | 0.64 | +0.10 |
Sortino ratioReturn per unit of downside risk | 1.04 | 0.91 | +0.12 |
Omega ratioGain probability vs. loss probability | 1.14 | 1.12 | +0.01 |
Calmar ratioReturn relative to maximum drawdown | 1.38 | 1.14 | +0.23 |
Martin ratioReturn relative to average drawdown | 4.26 | 3.19 | +1.07 |
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 | WIW | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.74 | 0.64 | +0.10 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 0.20 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.40 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.88 | 0.32 | +0.56 |
Correlation
The correlation between FSPWX and WIW is 0.48, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.
Dividends
FSPWX vs. WIW - Dividend Comparison
FSPWX's dividend yield for the trailing twelve months is around 4.17%, less than WIW's 8.84% 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% |
WIW Western Asset Inflation-Linked Opportunities & Income Fund | 8.84% | 8.68% | 8.78% | 10.38% | 11.81% | 6.93% | 3.20% | 3.74% | 4.26% | 3.70% | 3.61% | 3.91% |
Drawdowns
FSPWX vs. WIW - Drawdown Comparison
The maximum FSPWX drawdown since its inception was -3.84%, smaller than the maximum WIW drawdown of -29.49%. Use the drawdown chart below to compare losses from any high point for FSPWX and WIW.
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Drawdown Indicators
| FSPWX | WIW | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -3.84% | -29.49% | +25.65% |
Max Drawdown (1Y)Largest decline over 1 year | -2.91% | -4.55% | +1.64% |
Max Drawdown (5Y)Largest decline over 5 years | — | -29.49% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -29.49% | — |
Current DrawdownCurrent decline from peak | -1.27% | -6.91% | +5.64% |
Average DrawdownAverage peak-to-trough decline | -1.04% | -7.99% | +6.95% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.94% | 1.63% | -0.69% |
Volatility
FSPWX vs. WIW - Volatility Comparison
The current volatility for Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX) is 1.43%, while Western Asset Inflation-Linked Opportunities & Income Fund (WIW) has a volatility of 2.27%. This indicates that FSPWX experiences smaller price fluctuations and is considered to be less risky than WIW based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FSPWX | WIW | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.43% | 2.27% | -0.84% |
Volatility (6M)Calculated over the trailing 6-month period | 2.29% | 4.91% | -2.62% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.09% | 8.09% | -4.00% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.16% | 10.26% | -6.10% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.16% | 10.01% | -5.85% |