SPDR Portfolio Long Term Treasury ETF

NPORT-P false 0001107414 XXXXXXXX S000046024 C000143832 C000143833 C000232291 STATE STREET INSTITUTIONAL INVESTMENT TRUST 811-09819 0001107414 549300P1E098W6ES7M39 One Iron Street Boston 02210 617-664-7037 State Street Target Retirement 2055 Fund S000046024 549300ZW9FH4GBMJUU69 2025-12-31 2025-09-30 N 2034991292.41 9094264.14 2025897028.27 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 ACMBS UST SPDR Portfolio Long Term Treasury ETF 549300GYQKAMF6JUVI06 SPDR Portfolio Long Term Treasury ETF 78464A664 7347963.00000000 NS USD 198027602.85000000 9.774810865836 Long EC RF US N 1 N N State Street Global Advisors 549300BZ5TGIFZUZDZ37 State Street Institutional US Government Money Market Fund 857492706 3338751.39000000 NS USD 3338751.39000000 0.164803607656 Long STIV RF US N 1 N N N State Street Small/Mid Cap Equity Index Portfolio 54930001FXUIVS800B48 State Street Small/Mid Cap Equity Index Portfolio 85749T707 754462.29000000 NS USD 266506260.38000000 13.15497563109 Long EC RF US N 1 N N N State Street Global Advisors 5493008BJIBKQ5KTIF74 State Street Navigator Securities Lending Portfolio II 857492706 804750.00000000 NS USD 804750.00000000 0.039723144304 Long STIV RF US N 1 N N State Street Equity 500 Index II Portfolio 549300IDK82VZN2AFK60 State Street Equity 500 Index II Portfolio 85749T756 1300233.20000000 NS USD 793025227.96000000 39.14439958664 Long EC RF US N 1 N N N State Street Global All Cap Equity ex-U.S. Index Portfolio 5493006RH3PQC41AJP68 State Street Global All Cap Equity ex-U.S. Index Portfolio 85749T764 5321173.56000000 NS USD 773272942.18000000 38.16940996454 Long EC RF US N 1 N N N 2025-10-30 STATE STREET INSTITUTIONAL INVESTMENT TRUST Arthur Jensen Arthur Jensen Deputy Treasurer XXXX