Shares of Fiserv jumped more than 7% on Wednesday to a record after the payments company reported better-than-expected fourth-quarter earnings and issued guidance that also topped estimates. The stock closed at $229.53, exceeding its previous high reached in November, and is now up about 60% in the past year. Fiserv, which went public in 1986, provides digital payments technology to small businesses and financial institutions. Fiserv reported adjusted earnings of $2.51 in the quarter, exceeding the average ...