Rosen Law Firm announced a securities class action on behalf of purchasers of Baidu, Inc. securities during a proposed class period stated as November 18, 2026, through August 17, 2026. The lawsuit alleges Baidu overstated its AI business's ability to offset rapid declines in its legacy online marketing business and failed to disclose that revenue was reasonably likely to decline. It further claims the company's positive statements about its business, operations and prospects were materially misleading or lacked a reasonable basis. Investors seeking to serve as lead plaintiff must move the Court by November 13, 2026. The firm said eligible investors may pursue claims through a contingency fee arrangement, while no class has been certified.