Looking at the universe of stocks we cover at Dividend Channel, on 5/6/15, Summit Midstream Partners LP ( SMLP) will trade ex-dividend, for its quarterly dividend of $0.565, payable on 5/15/15. As a percentage of SMLP's recent stock price of $34.34, this dividend works out to approximately 1.65%, so look for shares of Summit Midstream Partners LP to trade 1.65% lower — all else being equal — when SMLP shares open for trading on 5/6/15.Below is a dividend history chart for SMLP, showing historical dividends prior to the most recent $0.565 declared by Summit 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 SMLP is likely to continue, and whether the current estimated yield of 6.58% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of SMLP shares, versus its 200 day moving average: Looking at the chart above, SMLP's low point in its 52 week range is $30.31 per share, with $56.49 as the 52 week high point — that compares with a last trade of $34.34. According to the ETF Finder at ETF Channel, SMLP makes up 4.33% of the Junior MLP ETF ( MLPJ) which is trading relatively unchanged on the day Monday. In Monday trading, Summit Midstream Partners LP shares are currently up about 0.5% on the day.