UPDATE 1-AmEx quarterly profit plunges 76% on $1.7 bln reserve build <!-- no image --> <div>Credit card issuer American Express Co posted a 76% drop in quarterly profit on Friday, as it set aside $1.7 billion to brace itself against potential non-payments due to a wave of coronavirus-led layoffs.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=WrJmScNR-X8:sVi551HmM8Q: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=WrJmScNR-X8:sVi551HmM8Q:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=WrJmScNR-X8:sVi551HmM8Q:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=WrJmScNR-X8:sVi551HmM8Q:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=WrJmScNR-X8:sVi551HmM8Q:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/WrJmScNR-X8" height="1" width="1" alt=""></div> Posted by Reuters