Nike shares hit an all-time high after strong Q4 results. Alibaba sells its U.S. business. IAC prepares to spin off Match.com, Tinder and OKCupid. Is it time to invest in online dating? We analyze those stories, dip into the Fool Mailbag and share a few stocks on our radar. Plus, Tim Hanson discusses the latest drama between Greece and the EU, investing in China, and what he’s watching in the 2nd half of 2015.

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