Regencell Bioscience (RGC) Stock Jumps Over 20% on December 4, 2025 as DOJ Probe and Going‑Concern Warning Shadow 2025’s Wildest Rally
Regencell Bioscience Holdings Limited (NASDAQ: RGC) is back on traders’ radar. On Thursday, December 4, 2025, RGC shares surged more than 20% intraday, trading in the mid‑teens after yet another volatile session in what has arguably been 2025’s most extreme