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William Blair Emerging Markets Growth Fund (WBEIX) Sortino Ratio: 1.94

WBEIX's Sortino Ratio of 1.94 indicates that for each unit of downside volatility, it generates 1.94 units of excess return. The ratio is calculated using historical daily returns over the past 12 months (as of Apr 1, 2026).

Unlike other measures, Sortino only focuses on downside volatility (losses), making it particularly useful for investors more concerned about protecting against drawdowns than overall price swings.

WBEIX Sortino Ratio Rank


WBEIX Sortino Ratio Rank: 76.777
Above Average

WBEIX ranks above 76.7% of all investments in our database based on Sortino Ratio over the past 12 months, indicating above-average returns relative to downside risk taken. Securities are ranked from 0 (worst) to 100 (best).

What moves the rank

  • Strong returns with minimal downside volatility → Higher rank
  • Severe or frequent drawdowns → Lower rank
  • Upside volatility → No impact (Sortino doesn't penalize upside swings)

What you can do with this information

  • Above-average downside protection with room for improvement
  • Compare against category peers to gauge relative positioning
  • Monitor for movement toward top tier or decline toward median
  • Consider pairing with top-tier holdings to improve portfolio risk profile

WBEIX Sortino Ratio Market Positioning

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


  • Red zone (bottom 25%): 1.02 or lower
  • Yellow zone (middle 50%): 1.02 to 1.90
  • Green zone (top 25%): 1.90 or higher
  • Top 1%: 7.30+
  • Median: 1.45 — half of all investments score higher

How it compares to other similar mutual funds

The table compares William Blair Emerging Markets Growth Fund's Sortino Ratio with other mutual funds in the Emerging Markets Diversified category across multiple time periods, showing how WBEIX'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 Apr 1, 2026.


SymbolName1Y Sortino Ratio5Y Sortino Ratio10Y Sortino RatioAll Time Sortino Ratio
LZEMXLazard Emerging Markets Equity Portfolio3.49
ESCIXAshmore Emerging Markets Small Cap Equity Fund3.42
LCSMXMartin Currie SMA-Shares Series EM Fund3.31
DEMIXDelaware Emerging Markets Fund3.29
BEMIXBrandes Emerging Markets Fund3.24
FQEMXFranklin Templeton SMACS: Series EM3.24
DRESXDriehaus Emerging Markets Small Cap Growth Fund3.15
LVAZXLSV Emerging Markets Equity Fund3.05
SFVLXSeafarer Overseas Value Fund3.05
GLLSXabrdn Emerging Markets ex-China Fund3.02
WBEIXWilliam Blair Emerging Markets Growth Fund1.94

S&P 500 Index

How to choose period

Historical Sortino Ratio

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

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


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Explore WBEIX risk-adjusted metrics in detail

Dive deeper into individual metrics with historical trends, benchmark comparisons, and performance across different time periods.