Wall St. ends flat amid election doubts, M&A flurry

Stocks were jolted Friday by disclosure that the FBI was investigating more emails as part of a probe into Hillary Clinton's use of a private email system, injecting fresh uncertainty over the Democratic candidate's presumed lead in the presidential election over Republican rival Donald Trump. Opinion polls have shown Clinton's lead over Trump was narrowing slightly since early last week and it is not yet known if the email controversy will erode her support. “I wouldn’t be half-surp