![Barry Rosenstein, founder and managing partner of Jana Partners, speaks at the Reuters Global Hedge Fund and Private Equity Summit in New York April 11, 2007. REUTERS/Eric Thayer (UNITED STATES Stock Photo - Barry Rosenstein, founder and managing partner of Jana Partners, speaks at the Reuters Global Hedge Fund and Private Equity Summit in New York April 11, 2007. REUTERS/Eric Thayer (UNITED STATES Stock Photo -](https://c8.alamy.com/comp/2D1X359/barry-rosenstein-founder-and-managing-partner-of-jana-partners-speaks-at-the-reuters-global-hedge-fund-and-private-equity-summit-in-new-york-april-11-2007-reuterseric-thayer-united-states-2D1X359.jpg)
Barry Rosenstein, founder and managing partner of Jana Partners, speaks at the Reuters Global Hedge Fund and Private Equity Summit in New York April 11, 2007. REUTERS/Eric Thayer (UNITED STATES Stock Photo -
![Barry Rosenstein is so wealthy he just bought America's most expensive home for $145M | Daily Mail Online Barry Rosenstein is so wealthy he just bought America's most expensive home for $145M | Daily Mail Online](https://i.dailymail.co.uk/i/pix/scaled/2014/05/25/article-0-1E32E70000000578-116_636x382.jpg)
Barry Rosenstein is so wealthy he just bought America's most expensive home for $145M | Daily Mail Online
![Barry Rosenstein is so wealthy he just bought America's most expensive home for $145M | Daily Mail Online Barry Rosenstein is so wealthy he just bought America's most expensive home for $145M | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2014/05/25/article-0-1E32F64F00000578-151_634x661.jpg)
Barry Rosenstein is so wealthy he just bought America's most expensive home for $145M | Daily Mail Online
![Barry Rosenstein, founder and managing partner of Jana Partners, speaks at the Reuters Global Hedge Fund and Private Equity Summit in New York April 11, 2007. REUTERS/Eric Thayer (UNITED STATES Stock Photo - Barry Rosenstein, founder and managing partner of Jana Partners, speaks at the Reuters Global Hedge Fund and Private Equity Summit in New York April 11, 2007. REUTERS/Eric Thayer (UNITED STATES Stock Photo -](https://c8.alamy.com/comp/2D19TEN/barry-rosenstein-founder-and-managing-partner-of-jana-partners-speaks-at-the-reuters-global-hedge-fund-and-private-equity-summit-in-new-york-april-11-2007-reuterseric-thayer-united-states-2D19TEN.jpg)
Barry Rosenstein, founder and managing partner of Jana Partners, speaks at the Reuters Global Hedge Fund and Private Equity Summit in New York April 11, 2007. REUTERS/Eric Thayer (UNITED STATES Stock Photo -
![Exclusive: Rosenstein's JANA promotes Ostfeld to joint managing partner amid strong returns - letter | Reuters Exclusive: Rosenstein's JANA promotes Ostfeld to joint managing partner amid strong returns - letter | Reuters](https://cloudfront-us-east-2.images.arcpublishing.com/reuters/JFYETJYOZFP2HNJ7OSPGWRKDWQ.jpg)