UPDATE 1-Citi combines its stock trading and prime brokerage business <!-- no image --> <div>Citigroup Inc is combining its stock trading business with its prime brokerage unit, which caters to hedge funds, private equity firms and other investors.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=KrVRCM7y5ac:F7Bn4d1jfyY:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=KrVRCM7y5ac:F7Bn4d1jfyY:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=KrVRCM7y5ac:F7Bn4d1jfyY:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=KrVRCM7y5ac:F7Bn4d1jfyY:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=KrVRCM7y5ac:F7Bn4d1jfyY:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/KrVRCM7y5ac" height="1" width="1" alt=""></div> Posted by Reuters