Looking at the universe of stocks we cover at Dividend Channel, on 6/12/13, Nuveen Premium Income Municipal Fund, Inc. ( NPI) will trade ex-dividend, for its monthly dividend of $0.072, payable on 7/1/13. As a percentage of NPI's recent stock price of $13.70, this dividend works out to approximately 0.53%, so look for shares of Nuveen Premium Income Municipal Fund, Inc. to trade 0.53% lower — all else being equal — when NPI shares open for trading on 6/12/13.Below is a dividend history chart for NPI, showing historical dividends prior to the most recent $0.072 declared by Nuveen Premium Income Municipal Fund, Inc.: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from NPI is likely to continue, and whether the current estimated yield of 6.31% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of NPI shares, versus its 200 day moving average: Looking at the chart above, NPI's low point in its 52 week range is $13.23 per share, with $15.94 as the 52 week high point — that compares with a last trade of $13.71. According to the ETF Finder at ETF Channel, NPI makes up 2.70% of the CEF Municipal Income ETF ( XMPT) which is trading lower by about 0.5% on the day Monday. In Monday trading, Nuveen Premium Income Municipal Fund, Inc. shares are currently down about 0.5% on the day.