** Baidu's Hong Kong-listed shares 9888.HK drop 8.8%, set for worst day since October 2024 and snapping three-day rally

** Stock is the top loser on Hang Seng Index .HSI, which slips 0.7%

** Baidu and Bytedance did not attend a symposium meeting with China President Xi Jinping that other business leaders attended

** However, stocks of companies whose founders/executives attended were mixed

** Xiaomi 1810.HK, CATL 300750.SZ, Meituan 3690.HK, Alibaba 9988.HK, and BYD 1211.HK slip 0.5% to 4%

** Will Semiconductor 603501.SS, China Feihe 6186.HK and Tencent 0700.HK rise 0.3% to 3.9%

** Hang Seng China Enterprises Index .HSCE slips 0.4% and Hang Seng Tech Index .HSTECH falls 0.9%

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))