Max Pain
Max pain is the strike price that minimizes the combined intrinsic value of all open call and put contracts for a given expiration. At that price, option buyers as a group lose the most and option writers keep the most premium. Max pain theory adds a forecast — that the underlying tends to drift toward this strike into expiration — and that added claim is far weaker than the calculation itself.
Most options expire worthless, and every open contract has a buyer hoping it pays and a writer hoping it doesn't. For any expiration date you can ask: if the stock closed at this price, how much would all the open options pay out in total?
Try that question at every strike and one price produces the smallest total payout. That price is called max pain — maximum pain for option buyers, minimum for the people who wrote the contracts.
The popular theory says the stock gets pulled toward that level as expiration approaches, as if writers steer it there. The calculation is real and we publish it daily; the magnet story is much shakier — which this page shows with data rather than asserting either way.
- Category
- Options & positioning
- Entity type
- Positioning gauge
- Also called
- maximum pain, max pain theory, options max pain, max pain price
- Last reviewed
- 2026-08-13
Current observation
This dated measurement is an instance of the concept, not the concept itself. It updates when the verified source dataset changes; the as-of date below is the freshness contract.
The minimum-payout strike for SPY options expiring within 7 days sits 0.7% below the last close. Counting every open expiration instead moves the level to 752 — the window changes the answer. This is a computed positioning summary. It is not a price target.
- All expirations
- 752
- Next 30 days
- 759
- Next 7 days
- 760
- Same day (0DTE)
- 755
Four expiry windows, four different answers — spot closed at 765.72. A max pain quote without its window is an underspecified number.
Which way does the causation run? In our archive, on the 30 sessions when the all-expiry max pain level moved, it moved toward where spot already was 83% of the time. That is what open interest chasing price looks like — the reverse of the arrow the magnet theory draws. Small sample (65 sessions), stated as such; the live gauge runs daily on SPY Options OI →
Why it matters
Max pain is a compact summary of where the options crowd's money is stranded. Whatever one thinks of the theory, the calculation locates the strike zone where open interest concentrates — the same zone where hedging flows, pinning effects and expiration mechanics play out.
Around expirations, documented "pinning" effects exist: stocks with heavy option activity close near popular strikes more often than chance would suggest, an effect the academic literature attributes largely to dealers hedging their books rather than to anyone steering price. Max pain gives that zone a name, even though pinning-to-a-strike and drifting-to-max-pain are different claims.
The number is horizon-dependent in a way most quotes of it ignore. Counting every open expiration gives one strike; counting only this week's gives another. Our SPY read regularly shows these two or three percent apart — anyone citing "the" max pain without stating the expiry window is quoting an underspecified number.
Calculation and identification
Sum the intrinsic value of every open call and put across strikes K, weighted by open interest, as if the underlying settled at S. Premiums already paid are sunk and excluded.
The candidate price with the smallest total payout. Our SPY implementation evaluates it daily across four expiry windows: all open expirations, 30 days, 7 days, and same-day (0DTE).
Worked example
Three strikes, one minimum
Suppose a stock has open interest at three strikes: 1,000 calls at 100, 1,000 calls and 1,000 puts at 105, and 1,000 puts at 110.
- 1Settle at 100: calls pay nothing, puts pay 1,000×5 (from 105) + 1,000×10 (from 110) = 15,000 points of intrinsic value.
- 2Settle at 105: the 100-calls pay 1,000×5 = 5,000; the 110-puts pay 1,000×5 = 5,000; total 10,000.
- 3Settle at 110: calls pay 1,000×10 + 1,000×5 = 15,000; puts pay nothing; total 15,000.
Nothing in the arithmetic makes 105 a magnet. It says only that, of these three prices, 105 transfers the least from writers to holders — the forecast that price will seek that strike is a separate claim requiring separate evidence.
Where it can mislead
- 01
The magnet story confuses correlation with causation. Max pain sits where open interest clusters, and open interest clusters near where the stock has been trading — so max pain tracking spot is largely OI following price, the reverse of the theory's arrow. Our daily history makes this visible.
- 02
There is no single "max pain": the level depends on which expirations you include. Our SPY windows (all / 30-day / 7-day / 0DTE) routinely disagree by 1-3%, and a quote without its window is unfalsifiable.
- 03
Option writers are not one coordinated actor. Open interest pairs a buyer with a writer on every contract, writers include hedged dealers with no directional stake, and "they push price to max pain" requires a they that doesn't exist.
- 04
The documented expiration effect is pinning to heavily-traded strikes, attributed mainly to dealer delta-hedging — not systematic drift to the minimum-payout strike days in advance. The two claims are regularly conflated.
- 05
The level moves daily as open interest changes. A target that re-computes every session can always be made to look prophetic in hindsight by quoting the version closest to the outcome.
Relationships
Concept-to-concept edges are typed and reciprocal. Tools, manuals, signals and datasets are separate resource nodes that measure, explain or operationalize the concept.
Both summarize where the crowd's activity concentrates — unusual volume flags a session's abnormal attention in the shares, while max pain condenses the standing options positioning into a single strike.
Computes SPY max pain daily across four expiry windows, alongside OI walls, dealer gamma and the zero-gamma flip.
The flow view of the same chains — where today's unusual positioning is being added, versus where it already sits.
The whole-market volume context around any single product's open-interest story.
The daily aggregates — max pain by window, spot, put/call ratios — behind the live observation and chart.
Frequently asked questions
What is the max pain for SPY today?
As of the 2026-08-21 close, SPY max pain is 760 for options expiring within 7 days and 752 counting every open expiration, against a spot close of 765.72. Both levels recompute after every session on our SPY Options OI page — and the window always matters.
What is max pain in options trading?
The strike price at which the total intrinsic payout of all open calls and puts for an expiration would be smallest — the settlement that costs option writers least and option buyers most. It is computed from open interest across strikes; max pain theory further claims price drifts toward that strike into expiration.
Does the stock price really go to max pain?
The evidence is weak for the strong version. Research documents expiration "pinning" — heavily-optioned stocks closing near popular strikes more often than chance, largely from dealer hedging — but that differs from price seeking the minimum-payout strike. In our daily SPY data the max pain level mostly follows spot around, because open interest accumulates near where price already trades.
How is max pain calculated?
For each candidate settlement price, multiply every strike's call open interest by that strike's in-the-money amount, do the same for puts, and sum. The candidate with the smallest total is max pain. The answer depends on which expirations you include, so a complete quote states the window.
Who benefits at max pain?
Sellers of options in aggregate: at that settlement, the most contracts expire worthless and writers keep the most premium. That is an accounting statement about the existing open interest, not proof anyone can or does steer the settlement there.
Sources, provenance and machine access
- Stock Price Clustering on Option Expiration DatesNi, Pearson & Poteshman — Journal of Financial Economics (2005)primary
The reference study on expiration pinning: clustering at option strikes is real and attributed largely to hedge rebalancing, distinct from the max-pain drift claim.
- Options education →The Options Industry Council (OIC)
Industry-body grounding for open interest, expiration and settlement mechanics.
Chain coverage, expiry windows and timestamps behind the daily max pain computation on this page.
Stable ID: https://www.thetrading.tools/concepts/max-pain#term. Dated observations have their own IDs and point back to this term; they never overwrite its definition.