X0101 24F-2NT LIVE 0000804239 XXXXXXXX N-1A SEI INSTITUTIONAL MANAGED TRUST One Freedom Valley Drive Oaks PA X1 19456 SIMT Liquid Alternative Fund S000080611 true SIMT Multi-Asset Income Fund S000035780 true SIMT Large Cap Fund S000026000 true SIMT Real Estate Fund S000006669 true SIMT Tax-Managed International Managed Volatility Fund S000054731 true SIMT LARGE CAP INDEX FUND S000061211 true SIMT Multi-Strategy Alternatives Fund S000028026 true SIMT U.S. Managed Volatility Fund S000006678 true SIMT Mid-Cap Fund S000006675 true SIMT Dynamic Asset Allocation Fund S000050286 true SIMT Large Cap Value Fund S000006674 true SIMT Tax-Managed Small/Mid Cap Fund S000006677 true SIMT Tax-Free Conservative Income Fund S000053395 true SIMT S&P 500 Index Fund S000018490 true SIMT Conservative Income Fund S000053394 true SIMT Multi-Asset Inflation Managed Fund S000035781 true SIMT Real Return Fund S000013604 true SIMT Multi-Asset Accumulation Fund S000035779 true SIMT Tax-Managed Large Cap Fund S000006676 true SIMT Small Cap Fund S000026001 true SIMT Small Cap Growth Fund S000006670 true SIMT Large Cap Growth Fund S000006671 true SIMT Core Fixed Income Fund S000006667 true SIMT Tax-Managed Managed Volatility Fund S000017259 true SIMT Global Managed Volatility Fund S000010830 true SIMT Small Cap Value Fund S000006672 true SIMT High Yield Bond Fund S000006673 true SIMT Multi-Asset Capital Stability Fund S000035782 true 811-04878 033-09504 09/30/2023 false false 5284762000 6580346000 3138456000 9718802000 0 (4434040000) 0.0001476 0 0 0 0 0 Glenn Kurdziel Controller and Chief Financial Officer 12/22/2023