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Western Asset Inflation Indexed Plus Bond Fund (WAIIX) Sharpe Ratio: 1.27

Mutual Fund · Currency in USD · Last updated Jun 3, 2026

The fund normally invests at least 80% of its net assets in inflation-indexed fixed income securities and at least 70% of its net assets in U.S. Treasury Inflation Protected Securities. Although the fund may invest in securities of any maturity, the fund will normally maintain a dollar-weighted average effective duration, as estimated by the fund's subadvisers, within 3 years of that of its benchmark, the Bloomberg U.S. Treasury: U.S. TIPS.

WAIIX's Sharpe Ratio of 1.27 indicates that for each unit of volatility, it generates 1.27 units of excess return above the risk-free rate. The ratio is calculated using historical daily returns over the past 12 months (as of Jun 3, 2026).

Sharpe uses total volatility (standard deviation) which includes both upside and downside price movements, making it useful for comparing risk-adjusted returns across different assets.

WAIIX Sharpe Ratio Rank

WAIIX Sharpe Ratio Rank: 19.319
Concerning

WAIIX ranks above 19.3% of all investments in our database based on Sharpe Ratio over the past 12 months, indicating weak returns relative to total risk taken. Securities are ranked from 0 (worst) to 100 (best).

What moves the rank

  • Strong returns with low total volatility → Higher rank
  • High volatility (both upside and downside) → Lower rank
  • Consistent returns → Higher rank than volatile returns of same magnitude
  • Sharp drawdowns increase volatility → Lower rank

What you can do with this information

  • Weak risk-adjusted returns relative to category peers
  • Evaluate whether this holding aligns with your risk-return objectives
  • Consider reducing exposure or re-evaluating position size
  • Review higher-ranked alternatives in the same category

WAIIX Sharpe Ratio Market Positioning

The chart shows WAIIX's Sharpe Ratio relative to all mutual funds on our platform, with color zones indicating percentile rankings. Higher ratios indicate better risk-adjusted returns.

  • Red zone (bottom 25%): 1.42 or lower
  • Yellow zone (middle 50%): 1.42 to 2.51
  • Green zone (top 25%): 2.51 or higher
  • Top 1%: 4.64+
  • Median: 2.09 — half of all investments score higher

How it compares to other similar mutual funds

The table compares Western Asset Inflation Indexed Plus Bond Fund's Sharpe Ratio with other mutual funds in the Inflation-Protected Bonds category across multiple time periods, showing how WAIIX's risk-adjusted performance compares to similar funds.

Data shows 1-, 5-, and 10-year periods, plus each fund's all-time average, as of Jun 3, 2026.

SymbolName1Y Sharpe Ratio5Y Sharpe Ratio10Y Sharpe RatioAll Time Sharpe Ratio
IPBAXAllspring Real Return Fund3.14
VTSPXVanguard Short-Term Inflation-Protected Securities Index Fund Institutional Shares3.03
VTAPXVanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares3.01
VTIPXVanguard Short-Term Inflation-Protected Securities Index Fund Investor Shares2.94
FSTZXFidelity Series 0-5 Year Inflation-Protected Bond Index Fund2.79
EIRRXEaton Vance Short Duration Inflation-Protected Income Fund2.57
RRPAXSEI Institutional Investments Trust Real Return Fund2.50
SEIAXSEI Multi-Asset Real Return Fund Class A2.48
EARRXEaton Vance Short Duration Inflation-Protected Income Fund Class A2.47
APOIXAmerican Century Short Duration Inflation Protection Bond Fund Investor Class2.40
WAIIXWestern Asset Inflation Indexed Plus Bond Fund1.27

S&P 500 Index

How to choose period

Historical Sharpe Ratio

The chart shows WAIIX's rolling Sharpe ratio over time compared to your chosen benchmark. Rising trends indicate improving returns relative to total volatility, while declining trends may signal deteriorating risk-adjusted performance or increased volatility. Use multiple timeframes to distinguish short-term fluctuations from long-term patterns.

Identify market cycles by observing when WAIIX consistently outperforms (line above benchmark), underperforms (below benchmark), or aligns with the benchmark.

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