Leslie's (LESL) shares were down 38% in Thursday premarket trading, following the previous session's 1.3% gain.
Zhongchao (ZCMD) stock was down 32% after the Wednesday session's 192% rally.
China SXT Pharmaceuticals (SXTC) shares were down 22%, extending the previous session's nearly 25% decline.
Wheeler Real Estate Investment Trust (WHLR) stock was down 20%, adding to the earlier session's 1.3% loss.