Eaton Vance Tax-Managed Buy-Write Income Fund is a closed-ended equity mutual fund launched and managed by Eaton Vance Management. It is co-managed by Parametric Portfolio Associates LLC and Rampart Investment Management Company, Inc. The fund invests in the public equity markets of the United States. It invests in stocks of large-cap companies operating across diversified sectors. The fund benchmarks the performance of its portfolio against the S&P 500 Index. Eaton Vance Tax-Managed Buy-Write Income Fund was formed on April 29, 2005 and is domiciled in Boston, United States.