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SSFCX

State Street Aggregate Bond Index Fund

Index fundEquityTracks the Bloomberg U.S. Aggregate Bond IndexOpen-end fund
STATE STREET INSTITUTIONAL INVESTMENT TRUST: SSFCX · SSFEX · SSFDXHoldings as of Jun 30, 2026Filed Aug 28, 2026

U.S. stock index fund · tracks Bloomberg U.S. Aggregate Bond Index

As of its 2026 Q2 report, State Street Aggregate Bond Index Fund held 1 positions with $3.37B in net assets. Its ten largest holdings made up 100.0% of the fund. The SSFCX share class costs 0.47% a year. Over the 12 months to May 2026, SSFCX returned 4.6%, with dividends reinvested. In 2026 Q2 it added no new positions and exited none.

2026 Q2 holdings and allocationChanges are against the previous quarter, 2026 Q1Headline fees and returns use the SSFCX share class
Expense ratio · SSFCX
0.47%
$47 a year for every $10,000 invested
0.03% – 0.47% across the 3 classes
$3.37B
The whole fund, all share classes
1 holdings
100.0%in the top 10
Weight held in the ten largest holdings
Top 25 hold 100.0%
Return, 1 year · SSFCX
+4.6%
With dividends, to May 2026
3 yr total +15.2% · 5 yr total +2.5%
What this fund is
Objective, as filed

The State Street Aggregate Bond Index Fund (the Aggregate Bond Index Fund ? or the Fund) seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of an index that tracks the U.S. dollar denominated investment grade bond market over the long term.

Strategy, summarised

The fund tracks the Bloomberg U.S. Aggregate Bond Index using a sampling strategy, holding a subset of the index's investment-grade government, corporate, mortgage-backed, and asset-backed securities rather than all constituents. Because the fund samples the index rather than holding all securities in it, the fund's returns may diverge from the index. The fund invests substantially all its assets through a master-feeder structure in a separate portfolio with identical policies.

What you own

per cent of the fund
CompanyWeightValue
SSAFXState Street Aggregate Bond Index Portfolio
100.00%
$3.37B
Showing 1–1 of 1 · the top 10 are 100.00% of the fund, the top 25 are 100.00%

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.

All 1 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%.

102.25%
of net assets
Bonds73.47%
Securitized25.09%
Cash & short-term3.69%

Look-through blends 1 underlying fund; 0.0% of NAV was not looked through and stays direct-classified.

How it has done

Total return, dividends reinvested · to May 2026

SSFCX share class · total returns with dividends reinvested

1 year
+4.61%
3 years
+15.22%
Cumulative, not per year
5 years
+2.47%
Cumulative, not per year
Largest decline in 3 years
-5.27%
From a previous high to a later low
Cumulative return, last three years· Jul 2023 – May 2026

Volatility over the last 12 months: 3.26%. 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.

The 3 share classes hold the same portfolio

Share classExpense ratio1 year3 years5 yearsWorst fall
0.47%+4.61%+15.22%+2.47%-5.27%
0.03%+5.12%+12.27%+0.70%-5.08%
0.22%+5.09%+12.11%+0.18%-5.18%

These classes hold the same portfolio, so the 2.29pp spread over 5 years is the cost difference between them — roughly 0.46pp a year — not a difference in what they own.

Fees & fund details

State Street Aggregate Bond Index Fund is a U.S. equity index fund that tracks the Bloomberg U.S. Aggregate Bond Index.

Asset class
Equity
Region
United States
Management
Index (passive)
Fund type
Open-end fund
Features
Master-feeder
Expense ratio, by class
0.03% – 0.47%· SSFCX 0.47%
Portfolio turnover
17.00% a year · as of 2026 Q2

Net is what a holder pays after the adviser's contractual waiver; gross is before it. A waiver can expire.

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.

0 new

0 exited

Connected research

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