After Facebook saw its stock prices rise after better than anticipated Q3 results, employees got their first chance to sell off their pre-IPO stock. Despite a lack of concrete numbers, it's clear that plenty of people did sell, and stock dipped a bit. According to CNET, Facebook's stock traded at nearly twice its normal volume and ended up down just under 4%.
This all came after a delay in trading courtesy of Hurricane Sandy's effect on lower Manhattan and the New York Stock Exchange.
(www.facebook.com)