State Street Equity 500 Index II Portfolio

NPORT-P false 0001107414 XXXXXXXX S000046024 C000143832 C000143833 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 2020-12-31 2020-06-30 N 226635658.82 6286002.46 220349656.36 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 State Street Equity 500 Index II Portfolio 85749T756 275067.31300000 NS USD 80550711.94000000 36.55586002294 Long EC 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 161033.22700000 NS USD 38588392.19000000 17.51234507348 Long EC RF US N 1 N N N State Street Global Advisors 549300BZ5TGIFZUZDZ37 State Street Institutional US Government Money Market Fund 857492706 587894.04000000 NS USD 587894.04000000 0.266800524998 Long STIV RF US N 1 N N N State Street Global Advisors 5493008BJIBKQ5KTIF74 State Street Navigator Securities Lending Government Money Market Portfolio 857492706 3055431.25000000 NS USD 3055431.25000000 1.386628552307 Long STIV RF US N 1 N N SPDR Portfolio Long Term Treasury ETF 549300GYQKAMF6JUVI06 SPDR Portfolio Long Term Treasury ETF 78464A664 448749.00000000 NS USD 21050815.59000000 9.553368921804 Long EC RF US N 1 N N State Street Global All Cap Equity ex-U.S. Index Portfolio N/A State Street Global All Cap Equity ex-U.S. Index Portfolio 85749T764 871867.02800000 NS USD 82801211.65000000 37.57719118686 Long EC RF US N 1 N N N 2020-07-29 STATE STREET INSTITUTIONAL INVESTMENT TRUST Daniel Foley Daniel Foley Assistant Treasurer