Looking at the universe of stocks we cover at Dividend Channel, on 10/31/13, Regency Energy Partners LP ( RGP) will trade ex-dividend, for its quarterly dividend of $0.47, payable on 11/14/13. As a percentage of RGP's recent stock price of $26.13, this dividend works out to approximately 1.80%, so look for shares of Regency Energy Partners LP to trade 1.80% lower — all else being equal — when RGP shares open for trading on 10/31/13.Below is a dividend history chart for RGP, showing historical dividends prior to the most recent $0.47 declared by Regency Energy 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 RGP is likely to continue, and whether the current estimated yield of 7.19% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of RGP shares, versus its 200 day moving average: Looking at the chart above, RGP's low point in its 52 week range is $20.58 per share, with $29.52 as the 52 week high point — that compares with a last trade of $26.14. According to the ETF Finder at ETF Channel, RGP makes up 3.45% of the MLP ETF ( MLPA) which is trading higher by about 0.1% on the day Tuesday. In Tuesday trading, Regency Energy Partners LP shares are currently up about 0.4% on the day.