Fiserv stock fell after the financial services company announced the sudden departure of CEO Mike Lyons. Shares tumbled on the news.

Fiserv CEO Mike Lyons resigned after a 71% stock decline during his tenure, with Takis Georgakopoulos named as replacement amid the company's crypto pivot.

Fiserv stock fell after the financial services company announced the sudden departure of CEO Mike Lyons. Shares tumbled on the news.

Fiserv (FISV) stock drops 8% as Takis Georgakopoulos takes over as CEO. Get the details on the sudden leadership transition.