US Stock Market Premarket Top Gainers Today (Dec. 12, 2025): Lululemon Surges, Cannabis Stocks Rally, Mitek and Quanex Jump
Updated: Friday, December 12, 2025 — 6:00 a.m. ET SEO summary: Here are the biggest US stock market premarket gainers today (NYSE/Nasdaq) and the news driving them, including Lululemon’s earnings and CEO transition, a cannabis-stock surge tied to marijuana rescheduling headlines, and earnings-driven jumps in Mitek and Quanex. Nasdaq+4StockAnalysis+4Reuters+4 US stock futures
