On 12/15/14, Southern Company's 5.30% Class A Preferred Stock ( ALP.PRP) will trade ex-dividend, for its quarterly dividend of $0.3312, payable on 1/1/15. As a percentage of ALP.PRP's recent share price of $26.86, this dividend works out to approximately 1.23%, so look for shares of ALP.PRP to trade 1.23% lower — all else being equal — when ALP.PRP shares open for trading on 12/15/14. On an annualized basis, the current yield is approximately 5.02%, which compares to an average yield of 4.78% in the "Utilities" preferred stock category, according to Preferred Stock Channel.As of last close, ALP.PRP was trading at a 5.60% premium to its liquidation preference amount. The chart below shows the one year performance of ALP.PRP shares, versus SO: Below is a dividend history chart for ALP.PRP, showing historical dividends prior to the most recent $0.3312 on Southern Company's 5.30% Class A Preferred Stock: According to the ETF Finder at ETF Channel, Southern Company ( SO) makes up 7.51% of the Uranium+Nuclear Energy ETF (NLR) which is trading up by about 0.8% on the day Thursday. In Thursday trading, Southern Company's 5.30% Class A Preferred Stock ( ALP.PRP) is currently up about 1.7% on the day, while the common shares ( SO) are up about 1.2%.