AP Twitter Account Hacked, Stocks Tank Then Rebound

A news agency tweet, that turned out to be fake about explosions at the White House injuring President Obama, sent markets on a round-trip roller coaster ride.

@AP, the official twitter handle of the Associated Press news agency, sent out a message at about 1:07 p.m. ET, saying "Breaking: Two Explosions in the White House and Barack Obama is Injured." The AP quickly said it was hacked.

White House Press Secretary Jay Carney said, "the President is fine" despite what the hacked Twitter feed said. CNBC's Eamon Javers and NYSE trader Kenny Polcari of O'Neil Securities, weigh in.