Looking at the universe of stocks we cover at Dividend Channel, on 7/9/13, Invesco Van Kampen Municipal Opportunity Trust ( VMO) will trade ex-dividend, for its monthly dividend of $0.065, payable on 7/31/13. As a percentage of VMO's recent stock price of $12.32, this dividend works out to approximately 0.53%, so look for shares of Invesco Van Kampen Municipal Opportunity Trust to trade 0.53% lower — all else being equal — when VMO shares open for trading on 7/9/13.Below is a dividend history chart for VMO, showing historical dividends prior to the most recent $0.065 declared by Invesco Van Kampen Municipal Opportunity Trust: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from VMO is likely to continue, and whether the current estimated yield of 6.33% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of VMO shares, versus its 200 day moving average: Looking at the chart above, VMO's low point in its 52 week range is $12.10 per share, with $15.89 as the 52 week high point — that compares with a last trade of $12.32. According to the ETF Finder at ETF Channel, VMO makes up 1.90% of the CEF Municipal Income ETF ( XMPT) which is trading relatively unchanged on the day Friday. In Friday trading, Invesco Van Kampen Municipal Opportunity Trust shares are currently off about 1.4% on the day.