Failure to Supervise
If your broker violates the rules and causes you losses, you have a claim against the broker and, more important, against his Firm. You are the firm’s client and it has a legal obligation to protect your interests.
The firm must supervise how the broker handles your account. The firm must supervise all aspects of the handling of your account including reviewing every transaction. If the firm fails to properly supervise the broker you may have a claim against the firm.