0001976685 2025-04-01 2026-03-31 0001976685 iisf:FounderClassMember 2025-04-01 2026-03-31 0001976685 iisf:InvestorClassMember 2026-03-31 0001976685 iisf:InvestorClassMember 2025-04-01 2026-03-31 0001976685 iisf:FounderClassMember 2026-03-31 shares iso4217:USD shares N-CSR Institutional Investment Strategy Fund 1027906 12.04 5642 12.02 N-2 0001976685 false