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What: Shares of Zynga (NASDAQ:ZNGA) have popped today by as much as 11% on speculation that Yahoo! could acquire the social game maker.

So what: Wunderlich Securities analyst Blake Harper is the source of the speculation. He suggested that the search engine could scoop up Zynga, as it's been on an acquisitive streak of late. New CEO Marissa Mayer has made many changes at Yahoo!, including numerous acquisitions related to social media, such as Alike and, among others.

Now what: Harper mentions that recent speculation revolved around possible targets like restaurant reservation maker OpenTable and reviewer Yelp, but he believes that Zynga would also make sense. The analyst also considers Tumblr and FourSquare as possible candidates. Harper notes that Yahoo! has lost market share in display advertising since Mayer became CEO, and expanding the company's social presence would be the right move.

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Fool contributor Evan Niu, CFA, has no position in any stocks mentioned. The Motley Fool recommends OpenTable. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.