The point
On 25 September 2026, Bitcoin traded near $85,500. Deribit's own max pain reading for that day's expiry sat at $75,000, ten and a half thousand dollars below spot. Max pain is the options strike where the largest dollar value of open contracts would expire worthless, worked out from open interest at every strike. It measures where option holders as a group stand to lose the most. The price itself answers to the market, and the gap between those two numbers on 25 September is the whole lesson.
What an option is and what open interest counts
A call option gives its buyer the right to buy the underlying asset at a fixed strike price by a set date. A put option gives the right to sell at that strike. The buyer owes nothing further once the premium is paid. The seller collects the premium up front and takes on the obligation if the buyer exercises.
Open interest is the count of contracts still open, still held by someone on each side, at each strike, and it counts something different from trading volume. Volume counts trades done in a day and can run high even when very few of those contracts are still open by the close. Open interest is a snapshot of positioning that survives from one day to the next. A strike with heavy open interest simply has a lot of contracts riding on it going into expiry.
How the max-pain strike is computed
Nobody reads max pain off a chart. It is worked out by testing every strike as if the underlying asset settled there, then adding up what option buyers would collect at each one.
Take an illustrative expiry with three strikes and made-up open interest, not a real market snapshot:
- Strike 80: 100 calls open, 50 puts open
- Strike 85: 60 calls open, 60 puts open
- Strike 90: 40 calls open, 120 puts open
If the price settled at 80, every put above that strike pays out. The 85 put pays 5 per contract on 60 contracts, for 300. Add the 90 put's 10 per contract on 120 contracts, another 1,200. Total payout at that price: 1,500. If the price settled at 85, only the 80 call and the 90 put are in the money. That pays 500 on the call and 600 on the put, for 1,100 total. If the price settled at 90, both calls below it pay out, for 1,000 plus 300, or 1,300. The smallest total payout falls at 85. That makes 85 this illustration's max pain strike, the price at which option sellers together hand over the least money and option buyers together keep the least.
What happens at a cash-settled expiry
Nothing changes hands in Bitcoin itself when a Deribit option expires. The contract is cash-settled. It pays a cash difference against an index reference price when it is in the money. The underlying coin never moves from one wallet to another because of the expiry itself.
What does move is dealer hedging. Bitcoin traded through the $80,000 to $87,000 range ahead of the 25 September expiry. Deribit's CEO Luuk Strijers told CoinDesk that dealers who were short calls had to keep buying spot to stay hedged as the price rose. That buying added to the rally. Once the contracts expire and that hedging position rolls off, the pressure it created goes with it. Open interest sat heavy at the $85,000 to $100,000 call strikes and the $60,000 to $75,000 put strikes. Deribit's Chief Commercial Officer, Jean-David Péquignot, called that a "multi-layered support floor" into the expiry. That is a read on where positioning sat at one moment, a description of structure rather than a forecast of where price would land.
Why the number is posted as a target, and why that is a misreading
Some traders hold that the underlying price drifts toward the max pain strike as expiry approaches. The theory says option sellers, mostly large institutions, have an incentive to push price toward the level where they pay out the least. This is a claim some traders make, and it is a widely debated one. Nobody has shown that option sellers can reliably move a market as large as Bitcoin's toward a chosen number. The theory offers no mechanism for how a seller with a hedged book would want to, or be able to, do that at scale.
Max pain is also a moving target rather than a fixed one. It is recalculated from open interest. Open interest changes every time a trader opens or closes a position, so a max pain reading taken on Monday can sit at a different strike by Thursday. A number that shifts with the crowd's own positioning describes that crowd. It says nothing about where an asset priced by a global market is actually headed.
What the equity market has that crypto does not
India's stock exchanges settle on one official closing price a day. Since 3 August 2026, that price for large, actively traded stocks has come from a short Closing Auction Session. Order entry closes at a randomly timed moment between 3:28 and 3:30 pm. A separate step from 3:30 to 3:35 pm then matches every order in the pool at one equilibrium price, and that price becomes the closing price. That same closing price is what a stock's futures and options contracts settle against on expiry day.
Crypto options carry no equivalent. No single order book gathers every buyer and seller into one pool at one moment. Settlement runs instead off a continuously updated index built across several venues. No exchange runs a closing auction that forces every participant's interest into view at the same instant. A reader who wants a felt sense of market-wide anxiety gets more from India VIX than from a max pain reading built around one expiry's open interest.
What a holder with no options position does with the figure
Max pain describes what option buyers and sellers are exposed to at one expiry on one venue. It says nothing about an allocation held on a schedule with no expiry date attached to it. An investor holding a Qatobit Crypto Index is not a party to any option contract. There is no strike to be pulled toward, and nothing is gained by checking a max pain reading before a rebalance. Qatobit's four QSI indices are rebalanced monthly on a published methodology. That is a mechanical process that runs on its own calendar and takes no cue from options open interest. It is the discipline an allocation is built to have, instead of a number to watch.
Two other pieces cover the ground around this one. Crypto market timings in India and why there is no closing bell goes further into how a market that never closes settles prices at all. What India VIX measures, and how to read a low print covers the volatility reading worth watching instead. What a crypto index is and how it works covers the mechanism an allocation runs on, in place of a single option position.
Max pain is real arithmetic on real open interest. It answers a real question about who is exposed to what at one expiry. It says nothing about where the price will go next. The 25 September gap between an $85,500 spot price and a $75,000 max pain reading is the plainest evidence that the two numbers never had to agree.
Frequently asked questions
What is max pain in options?
Max pain is the strike price at which the largest dollar value of open option contracts would expire worthless, computed from open interest across every strike for a given expiry. It measures collective option-buyer losses at each possible settlement price. Where the price actually goes is a separate question, answered by the market rather than by this calculation.
How is max pain calculated?
For every strike, add up what every in-the-money call and put would pay its buyer if the price settled there. The strike with the smallest total payout is the max pain strike: option sellers as a group hand over the least, and buyers as a group keep the least.
Does price move to max pain at expiry?
Sometimes it lands nearby, and sometimes it does not. On 25 September 2026, Bitcoin settled its quarterly Deribit expiry near $85,500 against a max pain reading of $75,000. The idea that price is pulled toward that strike is a claim some traders make. The market is under no obligation to follow it.
What happens to Bitcoin options at expiry?
An in-the-money contract is exercised and pays a cash difference against the settlement index price. An out-of-the-money contract expires worthless. No Bitcoin changes hands because of the expiry itself, since Deribit's options are cash-settled rather than delivering the underlying coin.
What is open interest?
Open interest is the number of option or futures contracts still open, held by someone on each side, at a given strike or in total. It is a snapshot of standing positions. That is distinct from trading volume, which counts how many contracts traded in a day regardless of how many remain open afterward.
Crypto investments are subject to market risk. Not financial advice.
“A better allocation begins with a better explanation.”
Qatobit principle
Published construction. Fixed cadence. Versioned control.
