 Nuveen Municipal High Income Oppty Fund NYSE:NMZ announced a monthly dividend on Monday, February 3rd, Zacks reports. Stockholders of record on Friday, February 14th will be paid a dividend of 0.06 per share on Monday, March 2nd. This represents a 0.72 dividend on an annualized basis and a dividend yield of 4.93. The ex-dividend date ... 