On September 8, Baidu fell 7.71% in pre-market trading, trading at $91.65/share, with turnover of $4.546 million, as selling pressure from Hong Kong trading spilled into the U.S. session.

The decline was triggered by a classic sell-the-news reaction following the formal inclusion of Baidu's Class A ordinary shares into both the Shanghai-Hong Kong and Shenzhen-Hong Kong Stock Connect programs, which took effect on September 7. Baidu's Hong Kong-listed shares opened higher on that day but reversed sharply, falling over 5.5% intraday as investors who had positioned ahead of the event locked in profits. The inclusion had been widely anticipated since Baidu completed its voluntary conversion from secondary to dual primary listing on September 1, meaning the catalyst was fully priced in before the effective date.

In an effort to support its valuation, Baidu repurchased 545,000 shares on September 7 for approximately HK$49.96 million at prices between HK$91.35 and HK$91.85 per share — its first buyback since completing the dual primary listing. However, the repurchase has so far failed to offset the broad-based profit-taking pressure that extended from Hong Kong after-hours into U.S. pre-market trading.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)