Looking at the universe of stocks we cover at Dividend Channel, on 7/11/13, BlackRock MuniYield Quality Fund III ( MYI) will trade ex-dividend, for its monthly dividend of $0.072, payable on 8/1/13. As a percentage of MYI's recent stock price of $13.30, this dividend works out to approximately 0.54%, so look for shares of BlackRock MuniYield Quality Fund III to trade 0.54% lower — all else being equal — when MYI shares open for trading on 7/11/13.Below is a dividend history chart for MYI, showing historical dividends prior to the most recent $0.072 declared by BlackRock MuniYield Quality Fund III: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from MYI is likely to continue, and whether the current estimated yield of 6.50% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of MYI shares, versus its 200 day moving average: Looking at the chart above, MYI's low point in its 52 week range is $13.10 per share, with $16.54 as the 52 week high point — that compares with a last trade of $13.30. According to the ETF Finder at ETF Channel, MYI makes up 2.04% of the CEF Municipal Income ETF ( XMPT) which is trading relatively unchanged on the day Wednesday. In Wednesday trading, BlackRock MuniYield Quality Fund III shares are currently down about 0.7% on the day.