SSMKX — State Street Small/mid Cap Equity Index Fund
Data updated: 2026-05-28
SSMKX — State Street Small/mid Cap Equity Index Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Multi-Cap / All-Cap Blend / Core Equity · $767.36M AUM · 0.04% expense ratio · 21.7% 1-yr return. From SEC regulatory filings.
SSMKX Fund Overview
SSMKX — State Street Small/mid Cap Equity 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: $767.36M
- 1-year return: 21.7%
- Ticker: SSMKX
- SEC CIK: 0001107414
- SEC series ID: S000050331
- Share class ID: C000158903
SSMKX Holdings
Top 1 holdings of State Street Small/mid Cap Equity Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| State Street Small/Mid Cap Equity Index Portfolio | 100.01% |
SSMKX Portfolio Allocation
Asset-class allocation of State Street Small/mid Cap Equity Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 100.0% |
SSMKX Performance
Total returns for SSMKX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -1.2% |
| 1 year | 21.7% |
| 3 years (annualised) | 15.6% |
| 5 years (annualised) | 5.0% |
SSMKX Risk Information
Risk metrics for SSMKX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 10.9%
SSMKX Costs and Fees
SSMKX costs about $4 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.04%
- Gross expense ratio: 0.13%
- Portfolio turnover: 26%
- Brokerage commissions: 0.00 bps of average net assets (SEC N-CEN)
SSMKX Cashflows
Over the 12 months to 2026-03, State Street Small/mid Cap Equity Index Fund had net inflows of $80.58M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $5.75M |
| 2026-02 | −$1.64M |
| 2026-01 | −$10.08M |
| 2025-12 | $48.04M |
| 2025-11 | $1.25M |
| 2025-10 | $26.13M |
SSMKX Debt Constituents
No individual debt constituents are reported in State Street Small/mid Cap Equity Index Fund's latest SEC N-PORT filing.
SSMKX Prospectus and SEC Filings
Official State Street Small/mid Cap Equity 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.