Looking at the universe of stocks we cover at Dividend Channel, on 5/2/13, EQT Midstream Partners LP ( EQM) will trade ex-dividend, for its quarterly dividend of $0.37, payable on 5/15/13. As a percentage of EQM's recent stock price of $44.70, this dividend works out to approximately 0.83%, so look for shares of EQT Midstream Partners LP to trade 0.83% lower — all else being equal — when EQM shares open for trading on 5/2/13.Below is a dividend history chart for EQM, showing historical dividends prior to the most recent $0.37 declared by EQT Midstream Partners LP: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from EQM is likely to continue, and whether the current estimated yield of 3.31% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of EQM shares, versus its 200 day moving average: Looking at the chart above, EQM's low point in its 52 week range is $22.58 per share, with $45.52 as the 52 week high point — that compares with a last trade of $44.95. According to the ETF Finder at ETF Channel, EQM makes up 4.65% of the Global X Junior MLP ETF ( MLPJ) which is trading relatively unchanged on the day Tuesday. In Tuesday trading, EQT Midstream Partners LP shares are currently up about 1.7% on the day.