How to Read an Option Chain in thinkorswim

Modules 1–2 are free. This module stays locked until you buy Options 101 or your desk plan is active, including a trial.

What this module covers

• Navigate to an option chain in thinkorswim (Trade tab > All Products)
• Read bid, ask, mark, volume, open interest, delta and Probability OTM
• Judge liquidity using the bid-ask spread and open interest