Max Pain in Options Trading: How It Works and Key Examples

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Max pain is the strike price at which the options on an underlying would cause the largest total loss to option holders if the underlying closed there at expiration. Equivalently, it is the price at which the combined intrinsic value of all open calls and puts for that expiration is lowest, so the smallest dollar amount goes to buyers and the most premium stays with sellers. The idea comes from the maximum pain hypothesis, which holds that the underlying’s price tends to drift toward this strike as expiration approaches.

How max pain works

Every listed option that is in the money at expiration has intrinsic value that the writer effectively pays to the holder. A call is worth the amount the underlying closes above the strike. A put is worth the amount it closes below the strike. Options that finish out of the money expire worthless, and the writer keeps the full premium.

Max pain asks one question for each strike: if the underlying settled exactly here, how much would all open contracts be worth? The strike that produces the smallest total, measured in dollars rather than number of contracts, is the max pain point.

The hypothesis rests on hedging. Market makers who write options usually buy or sell shares to stay directionally neutral, a process tied to delta and gamma in the option Greeks. Supporters argue that this hedging flow, concentrated near expiration, nudges the price toward the strike where writers owe the least. Call writers benefit if the price falls, put writers if it rises, and max pain is where the two pressures balance in dollar terms.

How to calculate max pain

Most traders read max pain from an option chain tool. To work it by hand for a single expiration date:

1. List every strike with open interest for both calls and puts.
2. Choose one strike as a test settlement price.
3. For every call strike below that price, multiply (test price − call strike) by call open interest.
4. For every put strike above that price, multiply (put strike − test price) by put open interest.
5. Add the call and put totals, then multiply by the contract multiplier (100 shares for standard US equity options).
6. Repeat for every strike. The strike with the lowest total payout is max pain.

As a formula, for test price P:

Total payout(P) = Σ max(0, P − K) × call OI(K) + Σ max(0, K − P) × put OI(K), times the multiplier.

The first sum is often called call pain and the second put pain.

Example of max pain

This is a hypothetical example with made-up open interest for stock XYZ, one expiration, three strikes and a 100-share multiplier.

• Settle at $45: no calls pay. The $50 puts pay $5 × 1,500 = 7,500 and the $55 puts pay $10 × 300 = 3,000. Total 10,500 × 100 = $1,050,000.
• Settle at $50: the $45 calls pay $5 × 500 = 2,500 and the $55 puts pay $5 × 300 = 1,500. Total 4,000 × 100 = $400,000.
• Settle at $55: the $45 calls pay $10 × 500 = 5,000 and the $50 calls pay $5 × 1,000 = 5,000. No puts pay. Total 10,000 × 100 = $1,000,000.

Max pain is $50, where holders collectively collect the least. If XYZ trades at $53 a week before expiration, the hypothesis would predict some pull toward $50. It would not predict that XYZ actually settles there.

How traders use max pain

Traders mostly treat max pain as context rather than a signal:

• Gap to current price. A large distance between the stock price and max pain draws attention, especially in the last days before expiration.
• Short premium strategies. Sellers of strangles, iron condors or a short straddle sometimes center their strikes near max pain, expecting the price to settle close to it.
• Reading positioning. The figure summarizes where calls and puts are concentrated for that expiration.

Limitations of max pain

• It moves. Opening and closing positions change open interest, so max pain can shift daily and is hard to use as a fixed target.
• The hypothesis is disputed. Critics argue any convergence toward max pain may be coincidence, and they question whether hedging flows, or manipulation, could reliably move a liquid stock.
• News overrides it. Earnings, macro data and other events can push prices far from max pain regardless of options positioning.
• Open interest is not direction. A call position could be part of a spread, a covered call or a hedge, so who actually stands to lose is unclear.
• Data lag. Open interest is typically reported once per day, so intraday max pain figures rest on the prior day’s positions.

Max pain vs. related ideas

• Highest open interest strike: the single strike with the most contracts. It can coincide with max pain, but max pain weighs every strike by how far in the money it would be.
• Pin risk: the uncertainty a writer faces when the underlying closes very near a strike, which leaves it unclear whether the option will be exercised. Pinning describes a price sticking to a strike. Max pain is one theory of which strike that might be.
• Theoretical option value: pricing models such as Black-Scholes value an option before expiry, including time value. Max pain uses intrinsic value at expiration only.

FAQs

The Bottom Line

Max pain matters most to options traders watching positioning into expiration, including sellers of strangles, iron condors and straddles. Treat it as context about where open interest sits rather than a price forecast. News, earnings and daily changes in open interest can easily override it, and the theory that prices drift toward it remains unproven.