Here's what JANA's Barry Rosenstein, a top activist investor, is buying now

Barry Rosenstein, founder of JANA Partners.
Adam Jeffery | CNBC

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Jana Partners' Barry Rosenstein is a top activist investor in the industry who famously pushed Whole Foods into the arms of Amazon. The hedge fund impressed investors with double digit returns in the years following its inception in 2001, however, it has seen lackluster performance recently. Rosenstein oversees about $5 billion as of 2019.

Here are his latest stock picks...including a bet on a small medical supply company.

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