Looking at the universe of stocks we cover at Dividend Channel, on 10/11/13, BlackRock Build America Bond Trust ( BBN) will trade ex-dividend, for its monthly dividend of $0.1318, payable on 10/31/13. As a percentage of BBN's recent stock price of $18.74, this dividend works out to approximately 0.70%, so look for shares of BlackRock Build America Bond Trust to trade 0.70% lower — all else being equal — when BBN shares open for trading on 10/11/13.Below is a dividend history chart for BBN, showing historical dividends prior to the most recent $0.1318 declared by BlackRock Build America Bond Trust: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from BBN is likely to continue, and whether the current estimated yield of 8.44% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of BBN shares, versus its 200 day moving average: Looking at the chart above, BBN's low point in its 52 week range is $18.42 per share, with $23.49 as the 52 week high point — that compares with a last trade of $18.71. According to the ETF Finder at ETF Channel, BBN makes up 1.41% of the CEF Income Composite Portfolio ETF ( PCEF) which is trading relatively unchanged on the day Wednesday. In Wednesday trading, BlackRock Build America Bond Trust shares are currently up about 0.2% on the day.