Why Pitney Bowes Stock Just Rocketed 52%

Shares of Pitney Bowes (NYSE: PBI), a small-cap provider of postal delivery solutions, isn't the kind of stock you'd ordinarily expect to blow up 50% in a day, but that's precisely what we're seeing this afternoon: Pitney Bowes stock, up 52% as of 2:45 p.m. EST. Pitney Bowes is scheduled to report its fourth-quarter numbers in just one week, after all, on Feb. 2. On the SEC's website, BlackRock (NYSE: BLK) just made an SC-13G/A filing showing that it has taken a 14.6% stake in Pitney Bowes stock.