Why Is Universe Pharmaceuticals (UPC) Stock Down 29% Today?

Group 1 - Universe Pharmaceuticals (UPC) stock experienced a significant rally, closing up 43.9% on Friday, with over 716,000 shares traded, far exceeding its average daily volume of approximately 95,000 shares [1] - The stock is currently down 28.5% as of Tuesday morning, trading at about $1.81 per share, compared to$1.72 per share before the rally [2] - Year-to-date, UPC stock was up 30.9% when markets closed on Friday [2] Group 2 - The volatility in Chinese stocks may have influenced UPC's stock movement, and there are indications that some traders may be engaging in pump and dump strategies [1] - The company's float is approximately 1.55 million shares, which may contribute to the stock's volatility [1]