STFAX
State Street Equity 500 Index Fund
STATE STREET INSTITUTIONAL INVESTMENT TRUST
Index fund

Average annual returns

Through 2025 · incl. N-PORT-derived 2025
1 year
17.62%
3 year
22.77%
5 year
14.18%
10 year
14.56%

Standardized average annual total returns (before tax), from calendar-year returns; recent years derived from N-PORT monthly data.

Calendar-year returns

2025 onward derived from N-PORT monthly returns

Risk statistics

81 months through March 31, 2026
Volatility (ann.)
12.05%
Sharpe
1.50
Sortino
2.95
Max drawdown
-23.95%
Best month
12.80%
Worst month
-12.40%
Beta vs VTSAX
0.95
Correlation
1.00

Derived from N-PORT monthly total returns; distinct from the prospectus returns above.

Machine-readable: JSON · Markdown. Programmatic access via the agent surface.