Series 4
A securities license entitling the holder to supervise options sales personnel and compliance issues. Before taking the Series 4 exam, you must have your Series 7 license.
Investopedia Commentary
The Series 4 exam is administered by the NASD, covering topics such as options strategies, foreign exchange options, and taxation.
See also: Broker, NASD, Series 11, Series 24, Series 26, Series 27, Series 3, Series 30, Series 31, Series 55, Series 6, Series 63, Series 65, Series 7