What is Over The Counter (OTC) trading? Client Service Team 29 July 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 How do I request additional accounts? Can I hold positions over the weekend and major holidays? How can I change my contact details? What’s the difference between a Pip, Tick and Point? Is there a maximum slippage level?