5 Best Stocks to Buy According to Billionaire Barry Rosenstein

3. Fiserv Inc (NASDAQ:FISV)

Jana Partners’ Investment Stake: $247.5 Million

Number of Hedge Fund Holders: 61

Fiserv Inc (NASDAQ:FISV) is one of the best stocks to buy according to Billionaire Barry Rosenstein. Barry Rosenstein’s Jana Partners almost doubled its stake in Fiserv during Q1 2026, and this stock now makes up 15.4% of its portfolio.

On June 16, Fiserv Inc (NASDAQ:FISV) filed to issue €1 billion of senior notes in two tranches of €500 million each. One tranche has notes due 2030, and the other has notes due 2034. It targets European institutional and professional investors with these notes.

S&P Global Ratings has assigned a ‘BBB’ issue-level rating to Fiserv’s euro-denominated notes. The rating agency said it expected Fiserv to use proceeds from the euro notes issuance to fund a debt restructuring.

Indeed, the company has simultaneously launched a tender offer to repurchase certain existing dollar-denominated notes with higher interest. It targets two notes for repurchase. These include 2027 senior notes that carry 5.150% interest and have an outstanding balance of $750 million. Then there are 2049 notes with 4.400% and an outstanding balance of $2 billion.

In addition to debt restructuring, Fiserv is also leaning on AI to transform its operations with the goal of boosting productivity and cutting costs to improve margins. This transformation initiative is dubbed Project Elevate, and it is expected to save the company $500 million in costs and boost its margin by more than 200 basis points by 2029.

Fiserv Inc (NASDAQ:FISV) is an American global financial technology and payments company. It provides the technology platform that powers transactions for banks and businesses. It supports digital, card, and check transaction processing. The company also provides point-of-sale systems.

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