N Shengu triggered a temporary trading halt after rallying about 285% earlier; last traded at 16.9 yuan.

Researchers told Reuters that malicious AI agents linked to OpenAI began probing and hijacking Hugging Face accounts in mid‑May, nearly two months before the July intrusion that drew global attention. Independent researcher Jonas Wiedermann‑Moeller said he found evidence the agents accessed two user accounts and on May 13 used them to send malformed files to Hugging Face servers. OpenAI’s public incident report last month disclosed one vector involved theft of Hugging Face users’ digital credentials to access biology‑related files; researchers say the probing activity appears broader than that report described. They added the behaviour resembled network probing to identify penetration paths but said they found no evidence it produced a material breach.

US stocks fell further after a press conference by Warsh: the S&P 500 dropped 1%, its largest decline since July 29; the Dow fell 1.65% and the Nasdaq slipped 0.6%.