Stock brokers must report suspicious activity to exchanges, conduct quarterly compliance reviews, and file half-yearly analyses. Regulation 24 requires the stock broker to conduct quarterly compliance reviews, promptly notify recognised stock exchanges of detected suspicious activity, fraud or market abuse, and submit half-yearly summary analyses and action-taken reports; deviations in internal controls, risk management, surveillance and client-onboarding policies must be presented to the appropriate committee or board with corrective actions and included in the half-yearly report, and brokers may seek exchange guidance when violations cannot be ascertained.