What is Over The Counter (OTC) trading? Client Service Team July 29, 2021 02:39 Updated Over The Counter (OTC) is an alternative to a centralised exchange such as the New York Stock Exchange. Instead of going through the formal exchange, trades are done via a network of dealers or brokers on the open market. Related articles Can I hold positions over the weekend and major holidays? How do I request additional accounts? What times is Live Chat available? How can I change my contact details? Do you charge account maintenance fee?