Strategist Who Said "Not in an AI Bubble" in January Now Sounding the Alarm

Owen Lamont, senior VP at Acadian Asset Management, wrote "We are Not in an AI Bubble" in January 2026. By June 2026, Yahoo Finance reported he had shifted to an explicit bubble alarm, citing semiconductor stocks as the trigger. CNBC referenced his "Four Horsemen" framework on July 23, 2026 in coverage of U.S. IPO activity — the issuance channel he flagged in November 2025.