AltaRock Partners, a fund known for its concentrated investments, reduced its stake in Amazon.com by 24.29% during the second quarter of 2026. The sale, which involved over 1.8 million shares, was disclosed in a recent SEC filing and had an estimated value of $438 million. Following the transaction, Amazon remains AltaRock's largest single holding, composing 32.21% of its reported portfolio.
Investors should note that 13F filings are submitted up to 45 days after a quarter ends, reflecting portfolio changes that are not current. The reduction occurred during a period where Amazon's business showed significant strength, with the company later reporting that its Q2 revenues beat estimates and that AWS growth had accelerated to its fastest rate in 18 quarters. Other major hedge funds were divided on Amazon during the same quarter, with some buying aggressively while others also trimmed their positions.