On 1/8/13, UDR Inc (UDR) will trade ex-dividend, for its quarterly dividend of $0.22, payable on 1/31/13. As a percentage of UDR's recent stock price of $23.94, this dividend works out to approximately 0.92%, so look for shares of UDR Inc to trade 0.92% lower all else being equal when UDR shares open for trading on 1/8/13.