<div>'Volfefe': a volatility index for the Trump era</div> <!-- no image --> <div>Traders know that when President Donald Trump tweets he can rock financial markets, often in unpredictable ways, but analysts at JP Morgan have now quantified the impact of his tweets, at least on the U.S. interest rates market.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=nPcHDSSmzck:T4HEZU9ZgOE: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=nPcHDSSmzck:T4HEZU9ZgOE:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=nPcHDSSmzck:T4HEZU9ZgOE:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=nPcHDSSmzck:T4HEZU9ZgOE:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=nPcHDSSmzck:T4HEZU9ZgOE:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/nPcHDSSmzck" height="1" width="1" alt=""></div> Posted by Reuters