USIN aims to mirror the performance of an index composed of US Treasurys with maturities ranging from seven to ten years and similar assets with comparable economic characteristics. The index excludes Treasury bills, inflation-linked bonds, state and local government series bonds, among others. Employing a laddering approach for selection, USIN chooses one Treasury security quarterly, favoring recent issuances in each quarter of the specified maturity range. This results in a diversified portfolio of 12 equally weighted securities. The index undergoes quarterly rebalancing and reconstitution, replacing securities with maturities under seven years with those nearing the ten-year mark. Furthermore, in cases where industry concentration surpasses 25% in the index, USIN aligns its allocation accordingly, seeking a systematic tracking method. USIN prioritizes US Treasury securities with longer time to maturity, aiming to accurately reflect its index.