What is max pain in options?

Max pain is the strike price at which option buyers would collectively lose the most money if the stock settled there at expiration. It is computed from open interest: for each candidate settlement price, sum the intrinsic value of all in-the-money calls and puts; the price minimizing that total payout is the max pain point.

How is max pain calculated?

Take every strike with open interest. For each candidate settlement price S, every call below S pays out (S minus strike) times open interest times 100, and every put above S pays out (strike minus S) times open interest times 100. Sum both across the chain. The candidate price with the smallest total payout is max pain.

Does max pain theory actually work?

Evidence is mixed. Studies find a modest pinning effect on high open-interest names near expiration, driven mostly by mechanical delta-hedge unwinding rather than manipulation, but max pain is not a reliable price target. Treat it as positioning context, not a prediction.

When does max pain update?

Open interest settles once per trading day, so max pain is recomputed nightly from end-of-day open interest. Intraday option volume does not change open interest until the next settlement.

What is max pain?

The expiration price where option buyers, as a group, lose the most — and option sellers keep the most. Computed from open interest, watched by traders as a possible "magnet" into expiry.

The idea in plain English

Every option is a two-sided bet. Buy a call and you profit if the stock closes far enough above your strike; buy a put and you profit far enough below. Whoever sold you that option — usually a market maker — profits when your option expires worthless.

Now zoom out to the whole option chain. At any candidate closing price, some calls finish in the money, some puts finish in the money, and everything else expires worthless. There is one price where the total payout to option holders is smallest — where the maximum number of bets die. That price is max pain: maximum pain for option buyers, minimum payout for sellers.

The formula, step by step

Max pain is pure arithmetic on open interest (the number of outstanding contracts at each strike):

Pick a candidate settlement price — by convention, each listed strike.
For every call struck below it: payout = (price − strike) × open interest × 100.
For every put struck above it: payout = (strike − price) × open interest × 100.
Sum both. Repeat for every candidate. The candidate with the smallest total is max pain.

Tiny example: a stock trades at $102. Calls have heavy open interest at $100, puts at $105. Settling at $100 makes the $105 puts pay out heavily; settling at $105 makes the $100 calls pay out. Somewhere in between — say $103 — both payouts shrink and the total hits its minimum. That balance point is max pain, and it moves whenever open interest shifts.

Why traders watch it: the pinning theory

The popular version says market makers "push" the price toward max pain into expiration. The mechanical version is less conspiratorial: dealers hedge the options they've sold by holding shares. As expiration approaches, those hedges unwind, and the unwinding flow can nudge price toward the strikes with the largest open interest — a phenomenon documented in academic work as pinning.

The honest read of the evidence: a modest pinning effect exists on names with heavy open interest, it is strongest in the final days before expiry, and it is unreliable — earnings, macro news, or a strong trend run straight through it. Max pain is positioning context, not a price target.

Call walls and put walls

The same open-interest table yields two more levels traders watch: the call wall (the single strike with the most call open interest, often acting as near-term resistance) and the put wall (most put open interest, often near-term support). Our dashboards show both next to max pain, plus the full open-interest distribution by strike.

How people actually use it

Expiry-week context: if spot sits far above max pain on a heavy-OI weekly, some traders expect drift back toward it — and fade accordingly.
Strike selection: premium sellers sometimes write options at or beyond the walls, betting the pin holds.
Reality check: before buying a short-dated out-of-the-money option, look at where max pain sits — the chain is telling you where the money dies.

Live max pain levels

Recomputed nightly from end-of-day open interest. Click through for the full dashboard: max pain by expiration, put/call ratio, walls, and the OI distribution chart.

Same open interest, different lens: what is GEX (gamma exposure)? explains how dealer hedging of these contracts dampens or amplifies day-to-day moves. For how we compute everything, see the methodology.