NPORT-P false 0001107414 XXXXXXXX S000046039 C000232298 C000143881 C000143880 STATE STREET INSTITUTIONAL INVESTMENT TRUST 811-09819 0001107414 549300P1E098W6ES7M39 One Iron Street Boston 02210 617-664-7037 State Street Target Retirement 2040 Fund S000046039 549300ITINN7P01J1Y08 2025-12-31 2025-03-31 N 2838587119.84 17851409.37 2820735710.47 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 UST State Street Global Advisors 549300BZ5TGIFZUZDZ37 857492706 5767279.94000000 NS USD 5767279.94000000 0.204460131397 Long STIV RF US N 1 N N N SPDR Portfolio Long Term Treasury ETF 549300GYQKAMF6JUVI06 78464A664 10456593.00000000 NS USD 285046725.18000000 10.10540349888 Long EC RF US N 1 N N SPDR Bloomberg High Yield Bond ETF 549300NCLW2248PN7J24 78468R622 533926.00000000 NS USD 50883147.80000000 1.803896324321 Long EC RF US N 1 N N State Street Small/Mid Cap Equity Index Portfolio 54930001FXUIVS800B48 85749T707 946252.35000000 NS USD 272672078.33000000 9.666700687976 Long EC RF US N 1 N N N State Street Global Advisors 5493008BJIBKQ5KTIF74 857492706 17649495.75000000 NS USD 17649495.75000000 0.625705403185 Long STIV RF US N 1 N N State Street Equity 500 Index II Portfolio 549300IDK82VZN2AFK60 85749T756 1782944.36000000 NS USD 906787672.05000000 32.14720431567 Long EC RF US N 1 N N N State Street Global Advisors 549300BZ5TGIFZUZDZ37 857492706 2557470.75000000 NS USD 2557470.75000000 0.090666798045 Long STIV RF US N 1 N N N State Street Aggregate Bond Index Portfolio 549300CYRPLDVB2ZTF93 85749T772 3632072.24000000 NS USD 324162447.33000000 11.49212406276 Long EC RF US N 1 N N N State Street Global All Cap Equity ex-U.S. Index Portfolio 5493006RH3PQC41AJP68 85749T764 8004008.01000000 NS USD 969445450.17000000 34.36853181854 Long EC RF US N 1 N N N 2025-04-29 STATE STREET INSTITUTIONAL INVESTMENT TRUST Arthur Jensen Arthur Jensen Deputy Treasurer XXXX