Looking at the universe of stocks we cover at Dividend Channel, on 5/6/15, Atlas Resource Partners, L.P. ( ARP) will trade ex-dividend, for its monthly dividend of $0.1083, payable on 5/15/15. As a percentage of ARP's recent stock price of $9.27, this dividend works out to approximately 1.17%, so look for shares of Atlas Resource Partners, L.P. to trade 1.17% lower — all else being equal — when ARP shares open for trading on 5/6/15.Below is a dividend history chart for ARP, showing historical dividends prior to the most recent $0.1083 declared by Atlas Resource Partners, L.P.: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from ARP is likely to continue, and whether the current estimated yield of 14.02% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of ARP shares, versus its 200 day moving average: Looking at the chart above, ARP's low point in its 52 week range is $7.04 per share, with $21.22 as the 52 week high point — that compares with a last trade of $9.25. According to the ETF Finder at ETF Channel, ARP makes up 2.39% of the Junior MLP ETF ( MLPJ) which is trading relatively unchanged on the day Monday. In Monday trading, Atlas Resource Partners, L.P. shares are currently up about 0.5% on the day.