Leading Adtech Stock Dumped by Major Backer, According to Recent Filing

Core Insights - Maestria Partners LLC sold approximately 293,146 shares of Magnite, valued at an estimated $6.92 million, as disclosed in a SEC filing on October 31, 2025 [1][2] - Following the sale, Maestria holds about 1.14 million shares of Magnite, valued at $24.85 million, representing 7.86% of its $316.35 million U.S. equity portfolio [2][3] Company Overview - Magnite, Inc. is a leading sell-side advertising technology provider, enabling publishers to monetize digital inventory across various channels [5][6] - The company operates an independent advertising platform for digital media publishers, generating revenue by facilitating digital advertising transactions [6] Financial Metrics - As of October 30, 2025, Magnite's share price was $17.31, with a market capitalization of $2.58 billion [4] - The company reported a revenue of $685.07 million and a net income of $43.13 million for the trailing twelve months (TTM) [4] Performance Analysis - Magnite shares have increased by 141% over the past three years, with a compound annual growth rate (CAGR) of 34.2%, outperforming the S&P 500 by 21.30 percentage points [3][9] - The stock reached a 52-week high of $26.52 during Q3 2025, but has since declined approximately 33% following an antitrust ruling favoring Google [9][10]