WuXi AppTec shares plunge near limit-down in late trading on $1.3B turnover

A late-session slide of this size on heavy turnover, with no stated catalyst, points to forced or reactive selling rather than a repricing of known fundamentals. The scale of the move matters because it signals how quickly positioning can unwind in a single name when liquidity thins into the close. Whether the absence of an explanation holds — or a driver emerges later — is the open question worth watching, along with whether the pressure stays contained to this stock or spills into the broader sector.