Looking at the universe of stocks we cover at Dividend Channel, on 2/4/14, Markwest Energy Partners L.P. ( MWE) will trade ex-dividend, for its quarterly dividend of $0.86, payable on 2/14/14. As a percentage of MWE's recent stock price of $69.35, this dividend works out to approximately 1.24%, so look for shares of Markwest Energy Partners L.P. to trade 1.24% lower — all else being equal — when MWE shares open for trading on 2/4/14.Below is a dividend history chart for MWE, showing historical dividends prior to the most recent $0.86 declared by Markwest Energy 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 MWE is likely to continue, and whether the current estimated yield of 4.96% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of MWE shares, versus its 200 day moving average: Looking at the chart above, MWE's low point in its 52 week range is $53.92 per share, with $75.79 as the 52 week high point — that compares with a last trade of $69.30. According to the ETF Finder at ETF Channel, MWE makes up 5.11% of the MLP ETF ( MLPA) which is trading lower by about 1.1% on the day Friday. In Friday trading, Markwest Energy Partners L.P. shares are currently down about 0.5% on the day.