Law Firm Reminds Investors of Duolingo Securities Class Action Over AI Content

What the lawsuit alleges

According to the DJS Law Group, the class action alleges violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5, which was promulgated under that law by the U.S. Securities and Exchange Commission.

The notice cites the complaint as saying that Duolingo made false and misleading statements to the market. Two points are named. First, the complaint says increased user friction was likely to hurt Daily Active User (DAU) growth rates. Second, it says the company's use of poor quality AI-generated content also damaged its growth prospects.

On that basis, the notice says the public statements made during the class period were false and materially misleading. The allegations come from the complaint as described by the law firm. The press release does not include a response from Duolingo.

Class period and deadline

The class period runs from May 2, 2025 to February 26, 2026. Investors who purchased DUOL shares in that window are encouraged to contact the firm about possible lead plaintiff appointments. The deadline is December 7, 2026.

The firm states that appointment as lead plaintiff is not required to share in any recovery. Shareholders who suffered a loss are invited to get in touch to participate.

The release also contains an apparent inconsistency. In describing the case details, it refers to statements by "Coastal" rather than Duolingo. The source does not explain this, so readers should treat the wording with care and consult the court filings for precise details.

About the law firm

The DJS Law Group describes its focus as enhancing investor return through "balanced counseling and aggressive advocacy". It says it specializes in securities class actions, corporate governance litigation, and domestic and international M&A appraisals. The firm says its clients include some of the largest and most sophisticated hedge funds and alternative asset managers in the world.

The contact listed is David J. Schwartz, at 274 White Plains Road, Suite 1, Eastchester, NY 10709. The release notes that it may be considered attorney advertising in some jurisdictions under applicable law and rules of ethics.

What it means for shareholders

For investors who held DUOL shares during the stated period, the notice is a prompt to check their eligibility before the December 7, 2026 deadline. The release does not state any damages figure, court schedule or outcome, and the claims remain allegations. The case also ties investor concerns about Duolingo to the quality of AI-generated content and to user engagement, two areas the complaint says affected growth prospects.