Before the deal was announced, the stock had risen about 5% over the past 12 months. That helped to boost its market cap, or the value of all its outstanding shares. Not to mention, Wall Street analysts like this stock. Of the analysts who cover it, 50% have buy ratings and only 17% have sell ratings, according to Bloomberg.
As part of the deal, Gartner is paying $77.25 a share -- that's a 25% premium above the company's stock price on Jan. 4.