NEW YORK, April 16, 2025 (GLOBE NEWSWIRE) -- Magnite (NASDAQ:MGNI), the largest independent sell-side advertising company, today announced an agreement with Western Union to support growth of the financial services company's new Media Network business. In doing so, Magnite will provide Western Union with technology to buy media as an advertiser and monetize its owned media. To further increase direct access to streaming inventory, Western Union Media Network is the first commerce media company to leverage M ...