NEW YORK, December 30, 2025, 05:20 ET — Premarket
- Regencell Bioscience shares closed up nearly 11% on Monday after a wide intraday swing.
- A fresh law-firm “investigation” notice and an older DOJ-trading probe disclosure stayed in focus.
- Traders are watching whether the move holds once regular volume returns after the opening bell.
Regencell Bioscience Holdings Ltd shares were last indicated at $23.48 in off-hours trade ahead of Tuesday’s U.S. session.
The stock ended Monday up 10.96% at $23.48, after trading as low as $19.80 and as high as $25.50, with about 723,000 shares changing hands, MarketBeat data showed. Market capitalization was listed at roughly $11.6 billion. 1
The move stood out on a day when U.S. stocks finished lower, leaving investors cautious heading into a holiday-shortened stretch. Thin liquidity can exaggerate price swings in smaller, headline-sensitive names. 2
Regencell itself has not posted a new press release since Oct. 31, when it said it filed its annual report on Form 20-F, the SEC annual filing used by foreign private issuers. 3
Legal headlines have circulated again in recent days. Bronstein, Gewirtz & Grossman said on Dec. 28 it was investigating potential claims on behalf of Regencell investors, an announcement that can amplify chatter without indicating any formal finding by regulators or a court. 4
In its annual report, Regencell disclosed it received correspondence and a subpoena from the U.S. Department of Justice indicating an investigation into trading in its ordinary shares, following prior volatility. 5
After-hours trading on Monday was modest, with the stock quoted at $23.48 and up about 1.75%, according to Barron’s market data. 6
Regencell is a Hong Kong-based early-stage bioscience company focused on traditional Chinese medicine formulations for neurocognitive disorders, including attention deficit hyperactivity disorder and autism spectrum disorder, according to its company profile. 7
On Monday, the shares opened sharply lower than the prior close — a “gap down,” meaning the first trade printed below the previous session’s closing price — before reversing higher, MarketBeat said. 8
