Activist Investor Jana Partners Said to Take Stake in Fiserv

Jana Partners is a shareholder in payments processor Fiserv Inc. and is pushing for changes at the company, according to a person familiar with the matter.

The activist hedge fund has been speaking to Fiserv privately about ways to boost its stock price and support Chief Executive Officer Mike Lyons, the person said, asking not to be identified because the matter is private.

Lyons is overseeing a revamp at Fiserv, which includes pricing changes and new technology strategies, that has so far left investors underwhelmed. The stock has fallen around 75% over the last 12 months.