WRAPUP 1-Big banks beat profit expectations but warning signs grow <!-- no image --> <div>Three big U.S. banks reported strong earnings on Tuesday, even as warning signs emerged that the playing field is beginning to tilt against the financial industry.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=auyc1VLkn6o:DPxclY0f3CA: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=auyc1VLkn6o:DPxclY0f3CA:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=auyc1VLkn6o:DPxclY0f3CA:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=auyc1VLkn6o:DPxclY0f3CA:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=auyc1VLkn6o:DPxclY0f3CA:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/auyc1VLkn6o" height="1" width="1" alt=""></div> Posted by Reuters