Moments after the Associated Press tweeted that two explosions had been reported at the White House and the president was injured, investors began to panic, dropping the S&P 500 into a momentary free fall.
Within moments, the S&P 500 dipped 1 percent while the Dow Jones dropped 100 points. The drop, dubbed “Tweet crash,” illustrated the power of social media on a jittery Wall Street.
Once reports surfaced that the Twitter account had been hacked, the index roared back.
