The Fund seeks to meet its investment objective generally by investing in individual securities which satisfy the criteria of the ICE 2034 Maturity US Treasury Index (the Underlying Index). The Fund may also invest in short-term paper, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates. The Fund is a term fund that will terminate on or about December 15, 2034, at which time it will distribute its remaining net assets to shareholders pursuant to a plan of liquidation. The Fund does not seek to return any predetermined amount at maturity or in periodic distributions. The Underlying Index consists of publicly-issued U.S. Treasury securities that are scheduled to mature between January 1, 2034 and December 15, 2034, inclusive.