Big U.S. investors use summer sell-off to ramp up bets <!-- no image --> <div>The summer sell-off is finally here - and not all U.S. investors are rattled by it.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=-EIVNycvmpM:lebsvXtaSUw: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=-EIVNycvmpM:lebsvXtaSUw:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=-EIVNycvmpM:lebsvXtaSUw:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=-EIVNycvmpM:lebsvXtaSUw:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=-EIVNycvmpM:lebsvXtaSUw:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/-EIVNycvmpM" height="1" width="1" alt=""></div> Posted by Reuters