Looking at the universe of stocks we cover at Dividend Channel, on 8/13/13, BlackRock Municipal Income Quality Trust ( BYM) will trade ex-dividend, for its monthly dividend of $0.078, payable on 9/3/13. As a percentage of BYM's recent stock price of $12.71, this dividend works out to approximately 0.61%, so look for shares of BlackRock Municipal Income Quality Trust to trade 0.61% lower — all else being equal — when BYM shares open for trading on 8/13/13.Below is a dividend history chart for BYM, showing historical dividends prior to the most recent $0.078 declared by BlackRock Municipal Income Quality Trust: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from BYM is likely to continue, and whether the current estimated yield of 7.36% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of BYM shares, versus its 200 day moving average: Looking at the chart above, BYM's low point in its 52 week range is $12.55 per share, with $17.79 as the 52 week high point — that compares with a last trade of $12.71. According to the ETF Finder at ETF Channel, BYM makes up 1.02% of the CEF Municipal Income ETF ( XMPT) which is trading relatively unchanged on the day Friday. In Friday trading, BlackRock Municipal Income Quality Trust shares are currently off about 0.2% on the day.