Options Max Pain Calculator
Max pain theory holds that stock prices tend to gravitate toward the strike price that causes the maximum financial pain to option buyers at expiration, because that is the price at which option writers (sellers) profit the most. The max pain point is computed by calculating, for each possible expiration price (each listed strike), the total dollar value that would be paid out to call and put holders combined, then identifying the strike that minimizes this total. Enter up to 10 strike levels with their corresponding call and put open interest, and the calculator will identify the max pain strike. Open interest data is published daily by the CBOE and the OCC.
Enter strike prices with call and put open interest (contracts):
| Strike ($) | Call OI | Put OI |
|---|---|---|
Max pain formula
For each candidate expiration price P (each strike):
Call payout(P) = sum over all K: max(0, P - K) * call_OI(K)
Put payout(P) = sum over all K: max(0, K - P) * put_OI(K)
Total payout(P) = call payout(P) + put payout(P)
Max Pain Strike = P that minimizes Total payout(P)
Open interest (OI) is measured in contracts. Each contract represents 100 shares, so multiply the total payout by 100 for the dollar value.
Using max pain in practice
- Max pain is most useful for highly liquid, optionable stocks with large open interest concentrations.
- The max pain price can shift daily as open interest changes from new trades, expirations, and rollovers.
- Within the final week of expiration, the max pain level may exert stronger influence as dealers hedge gamma exposure.
- Do not rely on max pain as the sole indicator for a trade; combine it with technical analysis and IV data.
- Weekly expirations (SPY, QQQ, etc.) have large open interest concentrations that can make max pain analysis particularly relevant.
Frequently asked questions
What is options max pain?
Max pain (also called the max pain point) is the strike price at which the total dollar value paid out to option holders at expiration is minimized. It is the price that causes the maximum financial loss to option buyers, and maximum benefit to option sellers (writers).
How is max pain calculated?
For each potential expiration price (each strike), calculate the total payout: sum of (max(0, S-K) * call OI) + sum of (max(0, K-S) * put OI) across all strikes. The max pain strike is the one with the lowest total payout sum.
Is max pain a reliable prediction of stock price?
Max pain is a theoretical observation, not a proven predictor. Some traders use it as a reference point because option market makers who are net short options may benefit from the stock settling near the max pain price. However, its predictive value is debated among academics and practitioners.
Where can I find options open interest data?
Open interest data is available from the CBOE (cboe.com), the Options Clearing Corporation (theocc.com), and most major brokerage platforms. You need the open interest for each strike for both calls and puts at the expiration you are analyzing.
How many strikes should I include?
Include all actively traded strikes for the expiration, typically from substantially below to substantially above the current stock price. Strikes with near-zero open interest contribute negligible amounts to the calculation.
Official sources
- Options Clearing Corporation (OCC), daily open interest data: theocc.com/market-data/open-interest-report.
- CBOE Market Data: cboe.com/market-data.
Reviewed by the CalculatorHub team, edited by James Graham, 15 June 2026. See our methodology.