 Advisors Asset Management Inc. reduced its position in Madison Covered Call Equity Strtgy Fd NYSE:MCN by 3.3 in the first quarter, HoldingsChannel.com reports. The firm owned 304,696 shares of the investment management companys stock after selling 10,338 shares during the period. Advisors Asset Management Inc.s holdings in Madison Covered Call Equity Strtgy Fd ... 