Yahoo Finance·2025-10-06 18:38Core Viewpoint - Magnite's stock declined significantly due to the antitrust ruling favoring Google, which is perceived as a setback for competitors in the adtech space [1][4]. Group 1: Stock Performance - Magnite's shares fell 16% in September, reflecting investor concerns following the antitrust ruling that allowed Google to retain ownership of Chrome [2]. - The stock experienced a brief spike after Magnite filed a lawsuit against Google, but overall, it mostly trended downward throughout the month [3]. Group 2: Legal Actions - Magnite filed a lawsuit against Google on September 16, claiming financial damages and remedies for Google's alleged anticompetitive practices in the ad exchange and ad server markets [5]. - This lawsuit positions Magnite as the third supply-side platform (SSP) to take legal action against Google in recent months, indicating ongoing tensions in the industry [2][5]. Group 3: Market Context - Google remains a dominant force in the digital advertising industry, and its legal and operational decisions significantly impact competitors like Magnite [4]. - Despite the overall growth in the digital advertising market, Magnite's revenue only increased by 6% in the second quarter, highlighting challenges in achieving robust growth [8].