Looking at the universe of stocks we cover at Dividend Channel, on 5/13/13, BlackRock Municipal Income Trust ( BFK) will trade ex-dividend, for its monthly dividend of $0.0801, payable on 6/3/13. As a percentage of BFK's recent stock price of $15.52, this dividend works out to approximately 0.52%, so look for shares of BlackRock Municipal Income Trust to trade 0.52% lower — all else being equal — when BFK shares open for trading on 5/13/13.Below is a dividend history chart for BFK, showing historical dividends prior to the most recent $0.0801 declared by BlackRock Municipal Income Trust: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from BFK is likely to continue, and whether the current estimated yield of 6.19% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of BFK shares, versus its 200 day moving average: Looking at the chart above, BFK's low point in its 52 week range is $14.81 per share, with $16.79 as the 52 week high point — that compares with a last trade of $15.52. According to the ETF Finder at ETF Channel, BFK makes up 1.40% of the CEF Municipal Income ETF ( XMPT) which is trading relatively unchanged on the day Thursday. In Thursday trading, BlackRock Municipal Income Trust shares are currently up about 0.1% on the day.