Insights
What Is Max Pain in Options?
Alphanume Team · June 10, 2026
The strike where option buyers hurt most.
Max pain in options is the settlement price at which the aggregate dollar loss to option buyers — or equivalently, the aggregate dollar payout from option sellers — is smallest. It is a single strike derived from the full chain of open interest across all listed strikes, and it sits at the intersection of market structure and options mechanics. The concept is simple to compute, frequently misapplied, and worth understanding precisely because it appears in so many trading conversations near expiry. It is also closely related to pinning — the tendency for heavily traded underlyings to settle near a strike — and to the SPX 0-DTE strike band, which is one practical application of the same underlying geometry.
How max pain options are calculated
The calculation is mechanical. For every candidate settlement price S* in the listed strike grid, you sum the total intrinsic dollar value of all in-the-money options at that settlement — across both calls and puts — weighted by open interest. That sum is the total payout sellers would owe if the stock settled exactly at S*. You repeat this for every strike on the chain and take the minimum. That minimum is max pain.
More precisely, let Ki be the i-th strike, OIC,i and OIP,i the call and put open interest at that strike, and the contract multiplier 100. Then total seller payout at candidate price S* is:
Pain(S*) = 100 · [ Σi: Ki < S* OIC,i · (S* − Ki) + Σi: Ki > S* OIP,i · (Ki − S*) ]
Max pain = argminS* Pain(S*). Because the function is piecewise linear and changes slope only at listed strikes, you only ever need to evaluate it at the strikes themselves.
A worked example
Consider a simplified chain with the underlying currently at 505 and three strikes:
| Strike | Call OI | Put OI |
|---|---|---|
| 495 | 200 | 800 |
| 500 | 500 | 600 |
| 505 | 900 | 300 |
Evaluate Pain at each candidate:
- S* = 495: No calls are in-the-money. Puts at 500 pay (500 − 495) · 600 · 100 = $300,000; puts at 505 pay (505 − 495) · 300 · 100 = $300,000. Total = $600,000.
- S* = 500: Calls at 495 pay (500 − 495) · 200 · 100 = $100,000. Puts at 505 pay (505 − 500) · 300 · 100 = $150,000. Total = $250,000.
- S* = 505: Calls at 495 pay (505 − 495) · 200 · 100 = $200,000; calls at 500 pay (505 − 500) · 500 · 100 = $250,000. No puts in-the-money. Total = $450,000.
The minimum is $250,000 at 500. Max pain is 500. Notice the underlying is currently at 505 — max pain is below spot, pulled down by the heavy put open interest concentrated at 500 and below.
Does price actually gravitate toward max pain?
The gravitational theory says that market makers, who are net short options and delta-hedge their exposure, unwind those hedges as expiry approaches in a way that nudges price toward max pain. If the stock is above max pain, market makers are long delta (from short puts) and buy pressure from their hedges supports higher prices — but simultaneously short-call hedges above max pain add sell pressure, creating a pinch. The net effect, in theory, is drift toward the pain minimum.
The empirical picture is considerably weaker than the theory. Studies on US equity index options find a statistically detectable tendency for settlement to cluster near high-open-interest strikes — pinning is real — but isolating max pain specifically as the attractor rather than simply "a high-OI strike" is harder. The correlation exists; the causation is contested. Two alternative explanations account for most of what looks like gravitational pull:
- Delta-hedging mechanics. Dealers who sold straddles or strangles become short gamma near expiry. Their hedge rebalancing creates natural price damping around the short-strike cluster, which often coincides with max pain because that is where OI is heaviest.
- Selection bias. Market participants write options at strikes near where they expect the market to go. The concentration of OI near ATM and near round numbers reflects anticipated ranges, so max pain is often already near where the market "should" settle — the correlation is not caused by gravity but by shared expectations encoded at option entry.
Manipulation is occasionally invoked — the idea that large dealers actively pin price to max pain — but the evidence does not support deliberate pinning as a primary mechanism, and it would require coordination across a fragmented market.
How to use max pain as an input
Treat max pain as one structural reference, not a settlement forecast. Here is what it is and is not useful for:
- It is useful as a secondary level when you are already near expiry and near a high-OI strike. If spot is within a point or two of max pain on a monthly expiry Thursday, the structural argument for staying range-bound is marginally stronger.
- It is not useful as a directional signal three weeks out. The OI landscape changes daily — rolls, new positioning, and expiry of nearer-term contracts shift the calculation continuously. Max pain computed Monday for Friday's expiry is meaningfully different from max pain computed Thursday morning.
- Pair it with the options chain directly. A max pain strike at 500 with 80% of put OI there is a much stronger gravitational candidate than a max pain strike at 500 with OI spread evenly across ten strikes. The concentration matters as much as the level.
- Watch the intraday dynamics. On 0-DTE expirations in particular — see the SPX 0-DTE strike band — gamma exposure near the max-pain strike can create rapid mean-reversion after early directional moves, as market-maker hedging flips sign near the strike.
What max pain is not
Max pain is not a conspiracy, not a guarantee, and not a substitute for understanding the full OI distribution. Its most common misuse is as a point prediction — "the market will close at 500 because that is max pain" — which conflates a structural tendency with a deterministic outcome. Earnings surprises, macro prints, and any other event that creates genuine price discovery will override any gravitational pull. The concept has genuine content in low-information, low-volatility environments near expiry; it has nearly no content in high-vol regimes where realized moves are larger than the distance to any single strike. Use it as one coordinate in a broader map, not the destination.