Understanding the Option Chain and Max Pain

The option chain is a table listing all available option contracts for an underlying — calls on one side, puts on the other, across every strike price. Reading it well gives a sense of where traders are positioned.

What the columns show

For each strike you typically see the premium (price), open interest (number of outstanding contracts), change in OI, volume and implied volatility. Calls sit on the left, puts on the right, with strikes down the middle.

Reading positioning

• High call OI at a strike often acts as a resistance level (many call writers there).
• High put OI at a strike often acts as support (many put writers there).
• The put-call ratio (PCR) summarises overall put vs call activity as a sentiment gauge.

What is "max pain"?

Max pain is the strike price at which the largest number of options (by value) would expire worthless — causing maximum loss to option buyers (and so maximum gain to writers). The theory suggests prices sometimes gravitate toward this level near expiry, since writers (often large players) have an incentive for it.

Use it with caution

Option-chain signals reflect positioning, not certainty — OI can shift fast, and max pain is a tendency, not a rule. It’s one input among many, and options are high-risk. Learn the basics in our options guide. Education only, not advice.