Nuveen Equity Premium Income Fund (the Fund) is a closed-end management investment company. The investment objective of the Fund is to provide a high level of current income and gains. The Fund invests its managed assets in a diversified equity portfolio, which seeks to substantially replicate price movements of the Standard & Poor's (S&P) 500 Stock Index. The Fund also uses an index option strategy of selling index call options in seeking to moderate the volatility of returns relative to an all equity portfolio. The Fund's investment advisor is Nuveen Fund Advisors, Inc. Its sub-advisor is Gateway Investment Advisers, LLC.