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 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 stock story. Intraday data from several market trackers showed the stock changing hands around $16–17, up roughly 24–31% on the day, with the price swinging between about $13 and over $18 on volume close to 1 million shares. GuruFocus+2StockAnalysis+2