That piece of misinformation obviously gets you a citation by the Truth in Stats Committee. I also heard that on CNBC today but then I also heard that the market fell by over 5% the day after elections four years ago.
It turns out that the latter was absolutely correct - on Wednesday, Nov. 5, 2008 in the midst of the once-in-a-lifetime credit crunch market crash, the S & P plummeted 5.3% from 1,006 to 953 the day after Obama was elected.
Shame on you for not taking the time to verify what you posted. The truth of the matter is that today's 2.4% market decline was less than HALF the decline of four years ago post-election.