Looking at the universe of stocks we cover at Dividend Channel, on 11/4/13, First Potomac Realty Trust ( FPO) will trade ex-dividend, for its quarterly dividend of $0.15, payable on 11/15/13. As a percentage of FPO's recent stock price of $12.43, this dividend works out to approximately 1.21%, so look for shares of First Potomac Realty Trust to trade 1.21% lower — all else being equal — when FPO shares open for trading on 11/4/13.Below is a dividend history chart for FPO, showing historical dividends prior to the most recent $0.15 declared by First Potomac Realty Trust: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from FPO is likely to continue, and whether the current estimated yield of 4.83% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of FPO shares, versus its 200 day moving average: Looking at the chart above, FPO's low point in its 52 week range is $10.94 per share, with $16.13 as the 52 week high point — that compares with a last trade of $12.42. According to the ETF Finder at ETF Channel, FPO makes up 1.70% of the KBW Premium Yield Equity REIT Portfolio ETF ( KBWY) which is trading higher by about 0.1% on the day Thursday. According to Preferred Stock Channel, there is a series of preferred stock that is senior to FPO, which trades under the symbol FPO.PRA — more info ». In Thursday trading, First Potomac Realty Trust shares are currently up about 0.2% on the day.