STBIX — State Street Equity 500 Index Fund
Data updated: 2026-05-28
STBIX — State Street Equity 500 Index Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Multi-Cap / All-Cap Blend / Core Equity · $13.54B AUM · 0.27% expense ratio · 17.4% 1-yr return. From SEC regulatory filings.
STBIX Fund Overview
STBIX — State Street Equity 500 Index Fund is a US mutual fund managed by State Street Institutional Investment Trust, categorised as United States Multi-Cap / All-Cap Blend / Core Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: State Street Institutional Investment Trust
- Category: United States Multi-Cap / All-Cap Blend / Core Equity
- Assets under management: $13.54B
- 1-year return: 17.4%
- Ticker: STBIX
- SEC CIK: 0001107414
- SEC series ID: S000010695
- Share class ID: C000029582
STBIX Holdings
Top 1 holdings of State Street Equity 500 Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| State Street Equity 500 Index II Portfolio | 100.00% |
STBIX Portfolio Allocation
Asset-class allocation of State Street Equity 500 Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 100.0% |
STBIX Performance
Total returns for STBIX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -4.4% |
| 1 year | 17.4% |
| 3 years (annualised) | 18.0% |
| 5 years (annualised) | 11.7% |
STBIX Risk Information
Risk metrics for STBIX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 10.3%
STBIX Costs and Fees
STBIX costs about $27 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.27%
- Gross expense ratio: 0.34%
- Portfolio turnover: 2%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
STBIX Cashflows
Over the 12 months to 2026-03, State Street Equity 500 Index Fund had net inflows of $3.15B, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $203.98M |
| 2026-02 | $188.17M |
| 2026-01 | $99.11M |
| 2025-12 | $328.69M |
| 2025-11 | $4.97M |
| 2025-10 | $221.74M |
STBIX Debt Constituents
No individual debt constituents are reported in State Street Equity 500 Index Fund's latest SEC N-PORT filing.
STBIX Prospectus and SEC Filings
Official State Street Equity 500 Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other United States Multi-Cap / All-Cap Blend / Core Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.