On 12/27/13, Corporate Office Properties Trust's 7 1/2% Series H Cumulative Redeemable Preferred Shares ( OFC.PRH) will trade ex-dividend, for its quarterly dividend of $0.4688, payable on 1/15/14. As a percentage of OFC.PRH's recent share price of $24.90, this dividend works out to approximately 1.88%, so look for shares of OFC.PRH to trade 1.88% lower — all else being equal — when OFC.PRH shares open for trading on 12/27/13. On an annualized basis, the current yield is approximately 7.54%, which compares to an average yield of 7.82% in the "Real Estate" preferred stock category, according to Preferred Stock Channel.As of last close, OFC.PRH was trading at a 0.40% discount to its liquidation preference amount. The chart below shows the one year performance of OFC.PRH shares, versus OFC: Below is a dividend history chart for OFC.PRH, showing historical dividends prior to the most recent $0.4688 on Corporate Office Properties Trust's 7 1/2% Series H Cumulative Redeemable Preferred Shares: According to the ETF Finder at ETF Channel, Corporate Office Properties Trust ( OFC) makes up 2.51% of the KBW Premium Yield Equity REIT Portfolio ETF (KBWY) which is trading relatively unchanged on the day Thursday. In Thursday trading, Corporate Office Properties Trust's 7 1/2% Series H Cumulative Redeemable Preferred Shares ( OFC.PRH) is currently trading flat on the day, while the common shares ( OFC) are off about 0.2%.