Biggest Stock Losers Today in the U.S. Market (December 11, 2025): Oracle’s AI Reality Check, Rezolute’s Trial Disaster and Micro‑Cap Carnage

As Wall Street digests a fresh Federal Reserve rate cut and growing worries about an AI spending bubble, today’s U.S. stock tape is dominated by dramatic downside moves. From Oracle’s double‑digit plunge to biotech blow‑ups and reverse‑split micro‑caps, December 11, 2025 is one of the ugliest “losers lists” investors have seen this year.