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EIRRX vs. FSPWX
Performance
Return for Risk
Dividends
Drawdowns
Volatility

EIRRX vs. FSPWX

Last updated Apr 2, 2026

Compare and contrast key facts about Eaton Vance Short Duration Inflation-Protected Income Fund (EIRRX) and Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX).

EIRRX is managed by Eaton Vance. It was launched on Mar 31, 2010. 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

EIRRX vs. FSPWX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Eaton Vance Short Duration Inflation-Protected Income Fund (EIRRX) and Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX). The values are adjusted to include any dividend payments, if applicable.

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EIRRX vs. FSPWX - Yearly Performance Comparison

2026 (YTD)20252024
EIRRX
Eaton Vance Short Duration Inflation-Protected Income Fund		0.45%4.63%1.68%
FSPWX
Fidelity SAI Inflation-Protected Bond Index Fund		0.50%6.76%-1.32%

Returns By Period

In the year-to-date period, EIRRX achieves a 0.45% return, which is significantly lower than FSPWX's 0.50% return.

EIRRX

1D
0.10%
1M
0.05%
YTD
0.45%
6M
0.45%
1Y
3.33%
3Y*
4.75%
5Y*
3.82%
10Y*
3.76%

FSPWX

1D
0.00%
1M
-1.08%
YTD
0.50%
6M
0.21%
1Y
2.99%
3Y*
—
5Y*
—
10Y*
—
*Multi-year figures are annualized to reflect compound growth (CAGR)

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Eaton Vance Short Duration Inflation-Protected Income Fund

Fidelity SAI Inflation-Protected Bond Index Fund

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EIRRX vs. FSPWX - Expense Ratio Comparison

EIRRX has a 0.64% expense ratio, which is higher than FSPWX's 0.05% expense ratio.

EIRRX
Eaton Vance Short Duration Inflation-Protected Income Fund
FSPWX
Fidelity SAI Inflation-Protected Bond Index Fund

Return for Risk

EIRRX vs. FSPWX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
EIRRX
EIRRX Risk / Return Rank: 8989
Overall Rank
EIRRX Sharpe Ratio Rank: 8686
Sharpe Ratio Rank
EIRRX Sortino Ratio Rank: 8787
Sortino Ratio Rank
EIRRX Omega Ratio Rank: 8888
Omega Ratio Rank
EIRRX Calmar Ratio Rank: 9292
Calmar Ratio Rank
EIRRX Martin Ratio Rank: 9494
Martin Ratio Rank
FSPWX
FSPWX Risk / Return Rank: 2929
Overall Rank
FSPWX Sharpe Ratio Rank: 2525
Sharpe Ratio Rank
FSPWX Sortino Ratio Rank: 2121
Sortino Ratio Rank
FSPWX Omega Ratio Rank: 1818
Omega Ratio Rank
FSPWX Calmar Ratio Rank: 4646
Calmar Ratio Rank
FSPWX Martin Ratio Rank: 3333
Martin Ratio Rank
The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

EIRRX vs. FSPWX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Eaton Vance Short Duration Inflation-Protected Income Fund (EIRRX) and Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX). 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.

EIRRXFSPWXDifference

Sharpe ratio

Return per unit of total volatility

1.71

0.74

+0.97

Sortino ratio

Return per unit of downside risk

2.44

1.04

+1.40

Omega ratio

Gain probability vs. loss probability

1.38

1.14

+0.25

Calmar ratio

Return relative to maximum drawdown

2.91

1.38

+1.53

Martin ratio

Return relative to average drawdown

12.86

4.26

+8.60

Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

EIRRX vs. FSPWX - Sharpe Ratio Comparison

The current EIRRX Sharpe Ratio is 1.71, which is higher than the FSPWX Sharpe Ratio of 0.74. The chart below compares the historical Sharpe Ratios of EIRRX and FSPWX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

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Sharpe Ratios by Period

EIRRXFSPWXDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

1.71

0.74

+0.97

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

1.35

—

—

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

1.37

—

—

Sharpe Ratio (All Time)

Calculated using the full available price history

1.10

0.88

+0.22

Correlation

The correlation between EIRRX and FSPWX is 0.67, 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

EIRRX vs. FSPWX - Dividend Comparison

EIRRX's dividend yield for the trailing twelve months is around 4.11%, less than FSPWX's 4.17% yield.

TTM20252024202320222021202020192018201720162015
EIRRX
Eaton Vance Short Duration Inflation-Protected Income Fund		4.11%3.57%4.08%4.50%5.07%3.54%2.21%2.66%2.91%2.13%2.24%2.05%
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%

Drawdowns

EIRRX vs. FSPWX - Drawdown Comparison

The maximum EIRRX drawdown since its inception was -10.27%, which is greater than FSPWX's maximum drawdown of -3.84%. Use the drawdown chart below to compare losses from any high point for EIRRX and FSPWX.

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Drawdown Indicators

EIRRXFSPWXDifference

Max Drawdown

Largest peak-to-trough decline

-10.27%

-3.84%

-6.43%

Max Drawdown (1Y)

Largest decline over 1 year

-1.18%

-2.91%

+1.73%

Max Drawdown (5Y)

Largest decline over 5 years

-6.22%

—

—

Max Drawdown (10Y)

Largest decline over 10 years

-10.27%

—

—

Current Drawdown

Current decline from peak

-0.44%

-1.27%

+0.83%

Average Drawdown

Average peak-to-trough decline

-1.01%

-1.04%

+0.03%

Ulcer Index

Depth and duration of drawdowns from previous peaks

0.27%

0.94%

-0.67%

Volatility

EIRRX vs. FSPWX - Volatility Comparison

The current volatility for Eaton Vance Short Duration Inflation-Protected Income Fund (EIRRX) is 0.69%, while Fidelity SAI Inflation-Protected Bond Index Fund (FSPWX) has a volatility of 1.43%. This indicates that EIRRX experiences smaller price fluctuations and is considered to be less risky than FSPWX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

EIRRXFSPWXDifference

Volatility (1M)

Calculated over the trailing 1-month period

0.69%

1.43%

-0.74%

Volatility (6M)

Calculated over the trailing 6-month period

1.13%

2.29%

-1.16%

Volatility (1Y)

Calculated over the trailing 1-year period

1.96%

4.09%

-2.13%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

2.85%

4.16%

-1.31%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

2.76%

4.16%

-1.40%