Looking at the universe of stocks we cover at Dividend Channel, on 12/5/13, Ensco plc ( ESV) will trade ex-dividend, for its quarterly dividend of $0.75, payable on 12/20/13. As a percentage of ESV's recent stock price of $59.33, this dividend works out to approximately 1.26%, so look for shares of Ensco plc to trade 1.26% lower — all else being equal — when ESV shares open for trading on 12/5/13.Below is a dividend history chart for ESV, showing historical dividends prior to the most recent $0.75 declared by Ensco plc: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from ESV is likely to continue, and whether the current estimated yield of 5.06% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of ESV shares, versus its 200 day moving average: Looking at the chart above, ESV's low point in its 52 week range is $51.01 per share, with $65.82 as the 52 week high point — that compares with a last trade of $59.33. According to the ETF Finder at ETF Channel, ESV makes up 4.28% of the Oil Services ETF ( OIH) which is trading lower by about 0.6% on the day Tuesday. In Tuesday trading, Ensco plc shares are currently up about 0.1% on the day.