Taboola is buying a rival adtech company to gain a bigger foothold with lucrative finance clients

Adam Singolda's Taboola is going shopping. John Lamparski/Getty Images Taboola is eyeing a bigger slice of the adtech market. It has made an offer to acquire fellow adtech firm Dianomi. The deal would help it clinch new premium publisher partnerships and blue-chip finance ad clients. Taboola is…