Alphabet Faces Securities Class Action Over Alleged Gemini 3.5 Pro AI Delays

Multiple law firms are reminding Alphabet Inc. investors of upcoming deadlines—most citing December 1, 2026, and one citing November 30, 2026—to seek lead plaintiff status in a securities fraud class action. The lawsuit, pending in the U.S. District Court for the Northern District of California, covers investors who acquired securities between May 19, 2026, and July 16, 2026. The action alleges Alphabet concealed disappointing training results and delays for its Gemini 3.5 Pro model after promising a June 2026 release. On July 16, 2026, delay reports triggered a 4.4% drop in Alphabet's Class A and Class C shares.