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SSEYX

State Street Equity 500 Index II Portfolio

Index fundEquityTracks the S&P 500 IndexOpen-end fund
STATE STREET INSTITUTIONAL INVESTMENT TRUST: SSEYXHoldings as of Jun 30, 2026Filed Aug 28, 2026

U.S. stock index fund · tracks S&P 500 Index

As of its 2026 Q2 report, State Street Equity 500 Index II Portfolio held 506 positions with $25.21B in net assets. Its ten largest holdings made up 36.3% of the fund. The SSEYX share class costs 0.01% a year. Over the 12 months to May 2026, SSEYX returned 29.7%, with dividends reinvested. In 2026 Q2 it added 10 new positions and exited 9.

2026 Q2 holdings and allocationChanges are against the previous quarter, 2026 Q1Headline fees and returns use the SSEYX share class
Expense ratio · SSEYX
0.01%
$1 a year for every $10,000 invested
one share class
$25.21B
The whole fund, all share classes
506 holdings
36.3%in the top 10
Weight held in the ten largest holdings
Top 25 hold 51.8%
Return, 1 year · SSEYX
+29.7%
With dividends, to May 2026
3 yr total +88.6% · 5 yr total +93.3%
What this fund is
Objective, as filed

The State Street Equity 500 Index II Portfolio (the Equity 500 Index II Portfolio ? or the Portfolio) seeks to provide investment results that, before expenses, correspond generally to the total return of the S&P 500 Index (the S&P 500 ? or sometimes referred to in context as the Index).

Strategy, summarised

The fund tracks the S&P 500 Index using a passive strategy, generally investing in all 500 constituent stocks in approximate proportion to their index weightings, though it may purchase a sample of stocks when holding all constituents is impracticable. Because the fund may sample the index rather than hold all constituents, its returns may diverge from the index. The fund maintains at least 80% of net assets in index securities or economically comparable stocks, and may use futures, options, or swaps as alternatives to direct stock ownership.

What you own

per cent of the fund
CompanyWeightValue
7.30%
$1.84B
6.40%
$1.61B
4.17%
$1.05B
3.52%
$886.01M
3.15%
$793.75M
GVMXXState Street Global Advisors
2.76%
$695.33M
2.69%
$679.38M
2.51%
$632.57M
1.96%
$494.65M
1.86%
$468.69M
Showing 1–10 of 506 · the top 10 are 36.32% of the fund, the top 25 are 51.80%

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.

The 200 largest of 506 holdings, with the share counts as filed, open with a free account.

What the fund is made of

Percentages are of fund net assets. Rounding, liabilities and short positions can make totals differ from 100%.

99.79%
of net assets
Stocks97.02%
Cash & short-term2.76%
Derivatives0.01%

Derivatives are shown at market value, not notional exposure.

By sector

Information Technology
36.5%
Financials
11.2%
Communication Services
9.4%
Consumer Discretionary
9.0%
10 other sectors
33.9%

How it has done

Total return, dividends reinvested · to May 2026

SSEYX share class · total returns with dividends reinvested

1 year
+29.72%
3 years
+88.63%
Cumulative, not per year
5 years
+93.26%
Cumulative, not per year
Largest decline in 3 years
-8.23%
From a previous high to a later low
Cumulative return, last three years· Jul 2023 – May 2026

Volatility over the last 12 months: 13.12%. Past returns are a record, not a forecast.

Jun 2026 has been filed since the trailing figures were struck, so it is not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.

Fees & fund details

State Street Equity 500 Index II Portfolio is a U.S. equity index fund that tracks the S&P 500 Index. 21% of SSEYX’s stock holdings are in companies whose revenue grew in the top quartile of U.S. companies over the last five fiscal years (covering 97% of the fund’s equity).

Asset class
Equity
Region
United States
Management
Index (passive)
Fund type
Open-end fund
Features
Master-feeder
Expense ratio, by class
0.01%· SSEYX 0.01%
Portfolio turnover
2.00% a year · as of 2026 Q2

Turnover is how much of the portfolio was replaced in a year.

Classified from what the fund holds, not from its name · 2026 Q2. The summary is a paraphrase of the prospectus; the objective is verbatim.

What changed this quarter

2026 Q2 vs 2026 Q1

Positions that entered or left the fund since its previous filing. Positions that were only resized are not listed.

10 new· the largest 8

9 exited· the largest 8

Carnival Corp
Coterra Energy Inc
DuPont de Nemours Inc
Chicago Mercantile Exchange
Hologic Inc
Connected research

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