ISI Annual Report
ISI Semi-Annual Report

ISI Total Return U.S. Treasury Fund Summary Prospectus
ISI Total Return U.S. Treasury Fund Prospectus
ISI Total Return U.S. Treasury Fund SAI
ISI Total Return U.S. Treasury Fund Fact Sheet
ISI Total Return U.S. Treasury Fund Quarterly Holdings

ISI Managed Municipal Fund Summary Prospectus
ISI Managed Municipal Fund Prospectus
ISI Managed Municipal Fund SAI
ISI Managed Municipal Fund Fact Sheet
ISI Managed Municipal Fund Fact Quarterly Holdings

ISI North American Government Bond Fund Summary Prospectus
ISI North American Government Bond Fund Prospectus
ISI North American Government Bond Fund SAI
ISI North American Government Bond Fund Fact Sheet
ISI North American Government Bond Fund Quarterly Holdings

ISI Strategy Fund Summary Prospectus
ISI Strategy Fund Prospectus
ISI Strategy Fund SAI
ISI Strategy Fund Fact Sheet
ISI Strategy Fund Quarterly Holdings

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