Looking at the universe of stocks we cover at Dividend Channel, on 8/7/14, Invesco Van Kampen Trust for Investment Grade Municipals ( VGM) will trade ex-dividend, for its monthly dividend of $0.074, payable on 8/29/14. As a percentage of VGM's recent stock price of $12.78, this dividend works out to approximately 0.58%, so look for shares of Invesco Van Kampen Trust for Investment Grade Municipals to trade 0.58% lower — all else being equal — when VGM shares open for trading on 8/7/14.Below is a dividend history chart for VGM, showing historical dividends prior to the most recent $0.074 declared by Invesco Van Kampen Trust for Investment Grade Municipals: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from VGM is likely to continue, and whether the current estimated yield of 6.95% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of VGM shares, versus its 200 day moving average: Looking at the chart above, VGM's low point in its 52 week range is $11.68 per share, with $13.24 as the 52 week high point — that compares with a last trade of $12.78. According to the ETF Finder at ETF Channel, VGM makes up 2.06% of the CEF Municipal Income ETF ( XMPT) which is trading relatively unchanged on the day Wednesday. In Wednesday trading, Invesco Van Kampen Trust for Investment Grade Municipals shares are currently up about 0.2% on the day.