Baidu sold AI as the cure for its search decline. Its own table shows the cure shrinking.

The charge lands twice on the same day

A securities class action for buyers of Baidu ADSs↗ between 18 November 2025 and 17 August 2026 alleges the company overstated its AI business's ability to offset falling online marketing revenue; the lead plaintiff deadline is 13 November↗ ¹⁴. No class has been certified, and the allegations are untested ⁴. Moody's moved the same day the Robbins notice printed↗, on 24 September: A3 affirmed, outlook cut to negative, on AI capital spending straining cash flow and leverage ¹³. Two tribunals, one ledger.

The engine shrank between quarters

Baidu's own Q2 2026 table↗, from unaudited management accounts, shows Core AI-powered Business revenue of RMB12.5 billion, up 25% year over year and down 8% quarter over quarter ². AI Cloud Infra, the largest component, fell 17% from the first quarter to RMB7.3 billion ². Online marketing, the business being replaced, fell 19% to RMB13.1 billion ². The ADS dropped 12.73% to $90.87 on 18 August ¹ and closed 16 September at $88.55, down 32.2% for the year ⁷.

The credit math behind the outlook cut

The cash-flow statement in the same release shows the ramp: capital expenditure of RMB3.8 billion in Q2 2025, RMB5.9 billion in Q1 2026, then RMB11.4 billion in Q2 2026, with free cash flow negative in all three disclosed quarters and at negative RMB7.95 billion by June ². Operating cash flow stayed in the black at RMB3.4 billion, its fourth straight positive quarter ².

Moody's counts RMB113 billion of adjusted debt at 3.3x EBITDA, up from 2.5x at end-2025, and expects adjusted EBITDA margins to compress to 26 to 27% as lower-margin AI revenue replaces search ³. The cushion it names: RMB166 billion of cash and short-term investments against RMB34 billion of near-term maturities ³. Agency-wide, Moody's expects several hyperscalers, Chinese and American, to run free-cash-flow negative through 2027↗ ¹⁰.

The company reads the other column

The same table shows AI Cloud Infra up 50% year over year and GPU Cloud up 283%↗, and CEO Robin Li says the momentum "reaffirms Baidu's transition from an internet-centric company to an AI-first company" ²⁹. The engine grew 50% in a year and shrank 17% in a quarter, and both numbers sit in the same table ².

Operating cash flow has been positive four straight quarters, total cash and investments stand at RMB283.1 billion, and Baidu has returned $259 million to shareholders since the start of the year ².

Nine straight Hong Kong buyback sessions, about HKD450 million since 7 September, including 552,500 shares for HK$49.9958 million on 22 September↗, have not turned the tape: the Hong Kong line fell 8.92% over the streak↗ ⁶⁷.

The verdict watch

Morgan Stanley went to Underweight the day after the print, cutting its target from $130 to $80, after the eighth straight quarter of advertising decline↗ ⁸. The Pentagon's 1260H roster added Baidu in June alongside Alibaba and BYD, a designation that limits United States government contracting and hung over this month's Trump-Xi summit↗ ⁵.

The dates that decide it: 13 November for lead plaintiffs, a results print that market-data calendars put around 17 November, and Moody's 12-to-18-month leverage view ¹³⁷. Shareholders pay for the transition in all three places at once: margin, litigation, and the buyback.