No-Revenue Biotech Soars 64,000% – Is Regencell (RGC) a Breakthrough or a Bubble?
Regencell Bioscience shares soared over 64,000% in 2025, peaking at $83.60 before plunging 74% to around $17–18 by October, with a market cap near $8.5 billion. The stock jumped again in early October after S&P Global BMI Index inclusion and positive Phase II trial data showing a 37% improvement in ADHD/ASD symptoms. Regencell remains unprofitable with no revenue. Analysts maintain a “Strong Sell” rating.