NPORT-P false 0001107414 XXXXXXXX S000046025 C000143837 C000143836 STATE STREET INSTITUTIONAL INVESTMENT TRUST 811-09819 0001107414 549300P1E098W6ES7M39 One Iron Street Boston 02210 617-664-7037 State Street Target Retirement 2060 Fund S000046025 5493004RTSJN5C4HVY78 2020-12-31 2020-06-30 N 95827346.72 7901299.24 87926047.48 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 N State Street Equity 500 Index II Portfolio N/A 85749T756 109458.84200000 NS USD 32053927.29000000 36.45555351193 Long EC RF US N 1 N N N State Street Global Advisors 5493008BJIBKQ5KTIF74 857492706 6610008.75000000 NS USD 6610008.75000000 7.517691218297 Long STIV RF US N 1 N N State Street Global Advisors 549300BZ5TGIFZUZDZ37 857492706 257907.47000000 NS USD 257907.47000000 0.293323170313 Long STIV RF US N 1 N N N SPDR Portfolio Long Term Treasury ETF 549300GYQKAMF6JUVI06 78464A664 179074.00000000 NS USD 8400361.34000000 9.553893960615 Long EC RF US N 1 N N State Street Global All Cap Equity ex-U.S. Index Portfolio N/A 85749T764 348749.23400000 NS USD 33120714.75000000 37.66883159115 Long EC RF US N 1 N N N State Street Small/Mid Cap Equity Index Portfolio 54930001FXUIVS800B48 85749T707 64197.91200000 NS USD 15383745.65000000 17.49623244863 Long EC RF US N 1 N N N 2020-07-29 STATE STREET INSTITUTIONAL INVESTMENT TRUST Daniel Foley Daniel Foley Assistant Treasurer