The strike where the most contracts expire worthless, meaning option holders lose the most. Read it as a pull near expiration, not a prediction.
What this price is
Max Pain (Max Pain) is the strike price at which, if the asset closed there on expiration day, the total loss to option buyers, calls and puts together, would be greatest, and the benefit to sellers at its peak. It is calculated by summing the value of all open interest at each hypothetical close and picking the lowest payout to holders.
The idea behind it
Because the largest seller is usually an institutional hedger, hedging and rebalancing forces in expiration week tend to pull price toward zones that wipe out the most time value. The last closes are drawn toward this price more than luck alone explains. It is a statistical observation, not a law.
Its limits, stated plainly
The measure assumes open interest stays fixed, and it can change. Its effect weakens the further expiration is, or when news upsets the balance. It is strongest in heavily traded symbols during quiet expiration weeks. Use it as context to explain pinning and pull, not as an entry compass.
Hypothetical example
A stock oscillating between $98 and $103 in a quiet expiration week, with Max Pain at $100: closing near 100 again and again despite attempts to move away is a familiar pattern here. Time value dies where it costs holders the most.
Common mistake
Treating it as a daily prophecy: away from expiration week, and when news is flowing, price moves for its own real reasons, and the distance from this level obliges nothing.
Where to see it on the platform
The gamma panel shows it for each symbol alongside the two walls, and the expiration calendar places it in the context of its week, where its meaning is strongest.
