Baidu (BIDU) Overstated AI Business Mitigation of Legacy Revenue Decline Case
$BIDU investors filed a claim against Baidu, Inc., its CEO, and its CFO for touting that the Company's AI-powered business growth had, and would continue to, meaningfully mitigate the ongoing decline in its legacy Online Marketing Services business, while failing to disclose that this mitigation was overstated and that Company revenue was reasonably likely to continue declining.
After Baidu disclosed second-quarter 2026 results showing Online Marketing Services revenue down 19% year over year and its Core AI-powered Business itself falling 8% quarter over quarter, with growth decelerating from 49% to 25%, the Company's ADS fell 12.73% on August 18, 2026.
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Case Details:
Baidu operates China's most popular internet search engine, with Online Marketing Services long serving as its core legacy revenue driver. By the third quarter of 2025, that segment's revenue had already fallen 17.6% year over year. Throughout the Class Period, Defendants Robin Yanhong Li (CEO) and Haijian He (CFO) repeatedly assured investors that growth in Baidu's newer "AI-powered Business" was meaningfully offsetting this legacy decline, touting metrics such as 48% year-over-year AI business growth for fiscal 2025 and, in the first quarter of 2026, AI revenue exceeding half of Baidu General Business revenue for the first time.
The truth emerged in two steps. On February 26, 2026, Baidu reported that total revenue had fallen more than 4% year over year for the fourth quarter and more than 3% for the full year, despite management's continued emphasis on AI growth; the stock fell 5.65% on this news.
Then, on August 18, 2026, Baidu disclosed that Legacy Business revenue had fallen 23% year over year, Online Marketing Services revenue had fallen 19%, and critically, the Company's own Core AI-powered Business had fallen 8% quarter over quarter, with its year-over-year growth rate decelerating sharply from 49% to 25% and its largest component, AI Cloud Infra, dropping 17% quarter over quarter. This revealed that the AI business Defendants had touted as an offsetting growth engine was itself losing momentum.
Based on these events, $BIDU investors filed a claim against Baidu alleging the Company:
Overstated the ability of its AI-powered business to mitigate rapid declines in its legacy online marketing business
Failed to disclose that Company revenue was reasonably likely to decline as a result
Lacked a reasonable basis for its positive statements about its AI transition and overall business prospects
Investors argue that had the truth about the AI business's actual trajectory been disclosed, Baidu's stock would not have traded at artificially inflated prices during the Class Period.