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Does max pain theory work?
Max pain is easy to calculate and hard to prove. It tells you where open options would pay their holders the least. It does not tell you where the stock will close, and I haven't seen a test we'd trust that says it does.
The short answer
No one has shown us solid proof that stocks get pulled toward max pain. The idea has a story behind it, and some traders swear by it. But "the stock closed near max pain" happens for plenty of boring reasons too.
So treat max pain as a fact about open contracts, not a forecast. If you sell options, don't pick a strike because of it.
What max pain actually measures
Max pain is the strike price where all open calls and puts for one expiry would pay their holders the least, if the stock closed there.
You work it out from Open interest: the count of contracts still open at each strike. Test each strike as a closing price. Add up what every call and put would be worth. The lowest total wins.
That's all it is. It uses no price history, no earnings, no news. Our max pain glossary page walks through the math line by line, and the max pain calculator does it for you.
A quick worked example (hypothetical)
A made-up stock, XYZ, trades at $52. One expiry has three strikes open:
| Strike | Open calls | Open puts |
|---|---|---|
| $45 | 1,000 | 4,000 |
| $50 | 3,000 | 3,000 |
| $55 | 5,000 | 500 |
Now test each strike as the close. One contract covers 100 shares.
| XYZ closes at | Calls pay | Puts pay | Total paid to holders |
|---|---|---|---|
| $45 | $0 | $2,000,000 | $2,000,000 |
| $50 | $500,000 | $250,000 | $750,000 (lowest) |
| $55 | $2,500,000 | $0 | $2,500,000 |
Max pain is $50. The stock is at $52. Believers would say it "should" drift down to $50 by expiry.
The case people make for it
The usual story goes like this. Market makers sell many of the options that traders buy. They hedge by buying or selling shares. As expiry gets close, that hedging can lean on the price around strikes with lots of open contracts.
That idea, often called "pinning," is a real topic. Stocks do sometimes close very near a big strike, and that's where Pin risk comes from. But a pull toward some busy strike is not the same as a pull toward the max pain strike. Those two can be different numbers.
Why we can't call it a forecast
Here's what stops us.
- Open interest doesn't say who is on which side. Every open contract has a buyer and a seller. The count tells you how many, not who's long, who's short, or who is hedged.
- It changes every day. Open interest updates as contracts open and close. Max pain on Monday can be a different strike by Friday.
- It often sits near the price anyway. The most contracts tend to pile up at strikes near where the stock trades. So "it closed near max pain" can happen without any pull at all.
- The news is bigger. Earnings, a downgrade or a market selloff move a stock far more than any hedging around one strike.
- We have no clean test. I haven't seen a study we'd trust, and we won't make one up. We don't know how often a stock closes at its max pain, and I won't guess.
If someone shows you a chart where the stock landed on max pain, ask how many charts they didn't show you.
Where it goes wrong for a seller (hypothetical)
Say you believe the $50 pin. With XYZ at $52, you sell one $50 put for $1.00. You collect $100. You set aside $5,000 in case you buy the shares.
Two days before expiry, the whole market sells off. XYZ closes at $44. Max pain is still $50 on paper. The stock doesn't care.
| XYZ at expiry | What happens | Shares | Premium | Total |
|---|---|---|---|---|
| $52 | Put expires | — | +$100 | +$100 |
| $50 | Put usually expires | — | +$100 | +$100 |
| $49 | Assigned at $50, worth $49 | −$100 | +$100 | $0 |
| $44 | Assigned at $50, worth $44 | −$600 | +$100 | −$500 |
| $38 | Assigned at $50, worth $38 | −$1,200 | +$100 | −$1,100 |
The worst case is the same as any cash-secured put: you buy 100 shares at the strike, and the stock keeps falling. Max pain didn't shrink that risk by a cent.
How a seller should (and shouldn't) use it
Don't use it to pick a strike. Pick the strike where you'd truly want to own the shares, or sell them. That's the core rule in the wheel strategy.
Don't size up because "it'll pin." The cash at risk is the strike times 100, not the premium.
Do use open interest as a map of busy strikes. A strike with huge open interest near expiry can mean a messy close and pin risk. If your short option sits right there late on expiry day, think about closing it.
Do treat it as one more number on the Options chain, like volume. Context, not a call.
In plain words: max pain tells you where option buyers would be paid the least. It doesn't tell you where the stock is going.
Try it yourself (no money needed)
- Pick a stock you follow. Open its options chain for the next monthly expiry.
- Note the open interest at five strikes near the price. Work out max pain with the table above.
- Write it down, with the date. Check again each day that week. Did max pain move?
- On expiry day, compare the close to your number. Do this for ten expiries before you trust it either way.
Our guide to reading an options chain shows where open interest sits.
Questions
Is max pain a real thing?
The number is real. It's simple math on open interest. The claim that stocks get pulled toward it is the part no one has proven to us.
Why do some traders say max pain works?
They often point to stocks that closed near it. But busy strikes tend to sit near the price already, so a close near max pain can happen by chance. You'd need many expiries, counted fairly, to know.
Should I sell puts at the max pain strike?
Pick a strike because you'd want the shares at that price, not because of max pain. If the stock falls through it, you're assigned the same way.
Does max pain matter more on expiry day?
Busy strikes matter more near expiry because of pin risk. That's a reason to watch your position, not a reason to expect a certain close.
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