China Merchants Securities is trading at HK$12.41, down 4.24%, amid a sharp Hong Kong market selloff. - Shares closed at HK$12.96 on October 21, following a close of HK$13.04 on October 20. - On October 22, the Hang Seng fell 2.9% amid technology-stock selling and fading expectations for further Chinese stimulus. No clear company-specific catalyst surfaced.