STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
STATE STREET INSTITUTIONAL INVESTMENT TRUST · 1 share class
Fund classification
Classified from what the fund holds · as of 2026 Q2
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO is a U.S. equity index fund that tracks the Russell Small Cap Completeness Index. 32% of SSMHX’s stock holdings are in companies whose revenue grew in the top quartile of U.S. companies over the last five fiscal years (covering 83% of the fund’s equity).
- Asset class
- Equity
- Region
- United States
- Management
- Index (passive)
- Fund type
- Open-end fund
- Features
- Master-feeder
Fund profile
As filed in the prospectus · 2026 Q2
The State Street Small/Mid Cap Equity Index Portfolio (the Small/Mid Cap Equity Index Portfolio ? or the Portfolio) seeks to provide investment results that, before expenses, correspond generally to the total return of an index that tracks the performance of mid-to small- capitalization exchange traded U.S. equity securities.
The fund tracks the Russell Small Cap Completeness Index, which comprises Russell 3000 companies excluding S&P 500 constituents, using a passive indexing approach. Under various circumstances the fund may purchase a sample of index stocks rather than all constituents, which can cause its returns to diverge from the index. The fund may use futures, options, or swaps on the index in lieu of direct stock ownership.
| Share class | Expense ratio |
|---|---|
| SSMHX | 0.01% |
Portfolio turnover 26.00% · as of 2026 Q2
Allocation
Asset groups · long / short shown separately, never netted · 2026 Q2
| Stocks | 99.06% |
| Cash & short-term | 6.72% |
| Derivatives | 0.02% |
Look-through blends 1 underlying fund; 0.005% of NAV was not looked through and stays direct-classified. The blend is as of 2026Q1, one or more quarters before the direct holdings (2026Q2).
Sector allocation
The same holdings as Allocation above, grouped by market sector instead of asset type · as of 2026 Q2
| Industrials | 18.4% |
| Information Technology | 17.4% |
| Financials | 13.6% |
| Health Care | 12.3% |
| 11 smaller | 38.3% |
Government, Securitized and Cash are non-corporate buckets; International is foreign holdings we don’t sector-classify, and Other is the residual (held funds, unresolved names).
Portfolio growth profile
How much of the fund’s stock holdings are in fast-growing companies · as of 2026 Q2
Share of the fund’s equity (by value) in companies whose trailing five-year revenue — or net-income — growth ranks in the top 25% of U.S. public companies. Foreign and newly-listed holdings are excluded, so the figure covers only part of the book. From SEC filings — not investment advice. How we measure this.
Latest quarter
What changed since the fund's previous filing
Return profile
Total return as filed — price change plus distributions reinvested · trailing figures to Apr 2026
May 2026 and Jun 2026 have been filed since the trailing figures were struck, so they are not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.
Holdings
By % of NAV · equity positions carry filed share counts · every resolvable issuer links to its company page
| Ticker | Issuer | %NAV | Reported price | Value | Shares |
|---|---|---|---|---|---|
| GVMXX | State Street Global AdvisorsGVMXX | 5.91% | — | $183.38M | — |
| SPCX | Space Exploration Technologies CorpSPCX | 1.00% | $170.86 | $31.05M | 181.7K |
| SNOW | Snowflake IncSNOW | 0.95% | $254.50 | $29.57M | 116.2K |
| BE | Bloom Energy CorpBE | 0.91% | $302.70 | $28.07M | 92.7K |
| NET | Cloudflare IncNET | 0.87% | $245.28 | $26.92M | 109.7K |
| ALAB | Astera Labs IncALAB | 0.82% | $483.02 | $25.54M | 52.9K |
| — | Spotify Technology SA | 0.81% | $459.13 | $25.14M | 54.8K |
| RKLB | Rocket Lab CorpRKLB | 0.61% | $101.65 | $18.83M | 185.2K |
| LNG | Cheniere Energy IncLNG | 0.56% | $239.01 | $17.33M | 72.5K |
| — | NU Holdings Ltd/Cayman Islands | 0.52% | $13.36 | $16.08M | 1.2M |
Reported price is the fund's own reported value divided by its own reported shares at 2026-06-30 — not a live quote, and not what the fund paid.
Top 10 positions are 12.96% of net assets, top 25 18.75%, across 2.5K issuers.
See more of this fund's book
More positions with filed share counts, and the quarter-over-quarter change list rather than the largest few — free with an account, no card required.
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