Barry Rosenstein

Barry Rosenstein worked at investment banks and hedge funds before founding JANA Partners in 2001. JANA became one of the leading activist hedge funds in the US, known for its constructive approach — taking board seats and working collaboratively with management to improve strategic focus, operational performance, or capital allocation rather than pursuing hostile takeovers. Notable JANA campaigns include Whole Foods Market, where JANA's involvement accelerated the strategic review that led to Amazon acquiring Whole Foods for $13.7 billion in 2017 — a 27% premium to the pre-announcement price that generated substantial returns for JANA. JANA also ran a successful campaign at Qualcomm, advocating for improved capital allocation and operational focus. In 2018 JANA attracted significant attention for filing a 13F disclosure at Apple alongside CalSTRS, arguing Apple should study the impact of smartphone addiction on children — a campaign that combined shareholder activism with social responsibility concerns. Rosenstein has also been notable for his approach to ESG integration in activist campaigns, combining financial value creation with stakeholder considerations. JANA manages approximately $10 billion.