On 5/1/14, Boston Properties, Inc.'s 5.25% Series B Cumulative Redeemable Preferred Stock ( BXP.PRB) will trade ex-dividend, for its quarterly dividend of $0.3281, payable on 5/15/14. As a percentage of BXP.PRB's recent share price of $22.03, this dividend works out to approximately 1.49%, so look for shares of BXP.PRB to trade 1.49% lower — all else being equal — when BXP.PRB shares open for trading on 5/1/14. On an annualized basis, the current yield is approximately 5.97%, which compares to an average yield of 7.18% in the "Real Estate" preferred stock category, according to Preferred Stock Channel.As of last close, BXP.PRB was trading at a 12.04% discount to its liquidation preference amount, versus the average premium of 0.19% in the "Real Estate" category. The chart below shows the one year performance of BXP.PRB shares, versus BXP: Below is a dividend history chart for BXP.PRB, showing historical dividends prior to the most recent $0.3281 on Boston Properties, Inc.'s 5.25% Series B Cumulative Redeemable Preferred Stock: According to the ETF Finder at ETF Channel, Boston Properties, Inc. ( BXP) makes up 15.18% of the iShares Industrial/Office Real Estate Capped ETF (FNIO) which is trading up by about 0.4% on the day Tuesday. In Tuesday trading, Boston Properties, Inc.'s 5.25% Series B Cumulative Redeemable Preferred Stock ( BXP.PRB) is currently up about 0.2% on the day, while the common shares ( BXP) are down about 0.8%.