Sit U.S. Government Securities Fund 

The fund aims to provide both substantial current income and the preservation of principal. It invests exclusively in securities backed by the U.S. government, which include those issued, guaranteed, or insured by the U.S. government, its agencies, or instrumentalities. A significant portion of its assets consists of pass-through securities. The advisor seeks to maintain the portfolio's average effective duration within a range of approximately 0 to 5 years. Typically, under standard market conditions, the fund's dollar-weighted average maturity is expected to be between 15 and 25 years.