What is SPX max pain?
Max pain is the SPX settlement price where outstanding options buyers would receive the least aggregate intrinsic-value payout at expiration. For every possible settlement strike, the calculator totals the value of calls finishing in the money and puts finishing in the money, weighted by reported open interest.
The minimum point on the payout curve is called max pain. Traders watch it most closely near expiration because concentrated open interest can create hedging flows and pin risk around heavily populated strikes. Max pain theory in options goes through where the idea came from and how much of it survives testing.
How this calculator works
- Select one SPX expiration from the delayed option chain.
- Aggregate call and put open interest at every strike.
- Calculate intrinsic-value payout for every possible settlement strike using the standard 100× contract multiplier.
- Choose the strike with the lowest combined call and put payout.
How to use max pain responsibly
Max pain is not a target that SPX must reach. It is most useful as one positioning reference beside spot, gamma exposure, the call wall, put wall, and known catalysts. A small distance to max pain with concentrated open interest may support a pinning thesis; a strong trend or macro shock can invalidate it immediately.
Data and timing
The calculator uses the delayed SPX option chain. Open interest updates on a lag and does not reveal whether positions are long, short, hedged, or part of multi-leg spreads. The public endpoint refuses to return a modeled result when the real delayed chain has not been received.
COMMON QUESTIONS
- What is SPX max pain for the nearest expiration?
- As of the November 11, 2026 close, SPX max pain for the November 13, 2026 expiration is $7,580, computed from open interest at that close.
- How much SPX open interest is behind that max pain?
- 190,830 call contracts and 513,951 put contracts were open for the November 13, 2026 expiration at the November 11, 2026 close, across 339 strikes.
- How far is SPX max pain from spot?
- The November 13, 2026 max pain of $7,580 sat 12.4 points below SPX spot of $7,592.40 when the chain was read.
- Does SPX always close at max pain?
- No. Max pain is a positioning reference, not a forecast. News, macro events, directional flow, changing open interest, and dealer hedging can overwhelm any pinning effect.
- What is SPX max pain?
- SPX max pain is the settlement level where the aggregate intrinsic-value payout across outstanding SPX calls and puts would be minimized for a specific expiration.
Learn more
- Max Pain Theory in Options: Should You Trust It? - Understanding the max pain theory, how to calculate it, its track record, and practical ways to use it in your trading.
- Pin Risk and Options Expiration: Why Stocks Pin to Strikes - Understanding the mechanics of stock pinning at options expiration.
- Options Open Interest Explained - Understanding open interest in options markets, how it differs from volume, and what it can and cannot tell you.
- What is Gamma Exposure (GEX)? A Complete Guide - Understanding gamma exposure: how it is calculated, and how modelled dealer hedging is read as damping or amplifying moves.
