Be responsible for daily execution of all operational activities related to margin supervision. Monitor and manage risk within margin accounts holding complex derivatives based on established policies and procedures on a daily basis. Effectively implement risk mitigation strategies/solutions in a timely manner. Monitor client level and firm level concentration risk, to ensure excessive concentration on securities is being managed appropriately by monitoring market conditions, liquidity, volatility, security specific fundamentals, and the results of stress tests. Monitor client margin accounts on a daily basis to ensure account margin is on-side. Ensure remedial actions are taken on accounts that are under-margined based on established policies and procedures. Ensure remedial actions are taken against highly concentrated accounts based on established policies and procedures. Ensure margin requirements are adjusted for securities by assessing the results of modeled outputs and ongoing market conditions. Perform periodic testing on client margin accounts to ensure that market values, loan values, margin, and equity balances are being calculated appropriately and escalate issues to stakeholders in a timely manner. Prepare relevant presentation materials on margin lending activities for the Brokerage Risk Operations Team., effectively communicating key risks in a clear and concise manner to Management.