Bancroft Fund Ltd. is a closed-ended equity mutual fund launched by GAMCO Investors, Inc. and managed by Gabelli Funds, LLC. It invests primarily in convertible securities, including convertible debt and convertible preferred stocks, across market capitalizations. The fund benchmarks its performance against the S&P 500 Index, the Bank of America Merrill Lynch All U.S. Convertibles Index, and the Barclays Balanced U.S. Convertibles Index. Formerly known as Bancroft Convertible Fund, Inc., it was formed on April 20, 1971 and is domiciled in the United States.