Key points
- A shareholder suit targets Alibaba's disclosures
- It points to two events in June
- October 5 is the deadline to seek the lead-plaintiff role
Investors have until October 5 to apply to be lead plaintiff in a securities lawsuit against Alibaba Group (BABA). Law firms have been circulating reminders about the deadline, but the suit itself was filed on August 4.
The suit, Wistisen v. Alibaba Group Holding Limited, accuses Alibaba of failing to disclose the risk of a U.S. military-company designation and its alleged use of a rival's AI model to train its own. Filed in federal court in Manhattan, it also names CEO Eddie Wu as a defendant.
What does the suit say Alibaba left out?
The complaint points to Alibaba's ties to China's Ministry of Industry and Information Technology. It alleges those ties brought Alibaba within the legal definition of a "Chinese military company" under the National Defense Authorization Act for fiscal 2025, a risk the company failed to disclose.
On June 8, the Defense Department added Alibaba to its updated list. According to the complaint, Alibaba's shares fell 3.9% over the next two trading days, closing at $115.38 on June 10.
The second allegation concerns distillation: using one AI model's answers to train another. Alibaba's filings described that as a hypothetical or "inadvertent" risk, the complaint says, when the company was "in the middle of carrying out such distillation attacks against Anthropic PBC's Claude AI model."
On June 24, Bloomberg reported that Anthropic had accused operators linked to Alibaba's Qwen lab of 28.8 million exchanges with Claude between April and June, through almost 25,000 fraudulent accounts. Alibaba's U.S.-listed shares fell 2.7% that day and another 4.7% the next, closing at $95.07 on June 25. In September, Anthropic alleged more than 151 million exchanges between May and July.
The complaint brings securities-fraud claims under Section 10(b) of the Securities Exchange Act and seeks to hold Wu liable as a controlling person under Section 20(a). The suit seeks to represent investors who bought Alibaba shares from June 26, 2025, through June 24, 2026.
What does the October 5 deadline mean?
A federal securities law from 1995 lets any investor who bought during that window ask the court to be lead plaintiff, the shareholder who steers the case for everyone else. "A lead plaintiff is generally the movant with the greatest financial interest in the relief sought by the putative class who is also typical and adequate of the putative class," one of the law firm notices explains.
That's why the reminders keep coming. Each one comes from a firm that would like to represent an investor seeking the role. The same notice also says "an investor's ability to share in any potential future recovery is not dependent upon serving as lead plaintiff." Missing the October 5 lead-plaintiff deadline does not, by itself, prevent an investor from sharing in a potential recovery.
The case is at an early stage, and the court hasn't ruled on whether the claims hold up. Alibaba's shares were at $107.29 as of 3:24 p.m. ET Thursday, about where they closed the day before and above the $95.07 June 25 close the complaint cites.
