MEMBER FIRM
member firm.Securities. A brokerage firm with at least one director, officer, or general partner who holds a seat in an organized securities exchange. — Also termed (if organized as a corporation) member corporation. [Cases: Exchanges 5–9. C.J.S. Exchanges §§ 9–16, 19, 24–26, 34, 36, 39.]
[Blacks Law 8th]