美股异动丨海川证券跌30.92%，为跌幅最大的中概股

Group 1 - The article reports significant declines in the stock prices of several Chinese concept stocks, with notable drops including Haichuan Securities down 30.92% and BQ Pet down 24.75% [1] - The closing prices and trading volumes of the affected stocks are detailed, highlighting Haichuan Securities at 0.4559 with a trading volume of 398,200, and BQ Pet at 3.010 with a trading volume of 42,933,000 [1] - Other companies experiencing declines include Lobo Technology down 22.18%, Shangao Life Sciences down 20.71%, and Shangcheng Shuke down 18.64%, indicating a broader trend of falling stock prices in this sector [1]