NEW YORK (Reuters) - The U.S. Securities and Exchange Commission on Friday denied a request to list what would have been the first U.S. exchange-traded fund built to track bitcoin, the digital currency.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=gPOP5hjNBlQ:LvGw5HS_ufk:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=gPOP5hjNBlQ:LvGw5HS_ufk:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=gPOP5hjNBlQ:LvGw5HS_ufk:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=gPOP5hjNBlQ:LvGw5HS_ufk:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=gPOP5hjNBlQ:LvGw5HS_ufk:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/gPOP5hjNBlQ" height="1" width="1" alt="" />