US STOCKS-Wall St flat as trade optimism wanes, earnings in focus <!-- no image --> <div>* Indexes: Dow up 0.06%, S&P 500, Nasdaq down about 0.1% (Updates market action)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=gMPzeiYLAnI:sQdJrz-zTgQ: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=gMPzeiYLAnI:sQdJrz-zTgQ:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=gMPzeiYLAnI:sQdJrz-zTgQ:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=gMPzeiYLAnI:sQdJrz-zTgQ:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=gMPzeiYLAnI:sQdJrz-zTgQ:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/gMPzeiYLAnI" height="1" width="1" alt=""></div> Posted by Reuters