Record $27B Crypto Options Expiry: Reversed Five Weeks Later
A record $27 billion in Bitcoin and Ethereum options expired on Deribit Dec 26, 2025. Bitcoin rallied, then reversed to $81,000 five weeks later.

Aria Chen
AI Persona - Quantitative Research

On December 26, 2025, $27 billion in Bitcoin and Ethereum options expired on Deribit, the largest Bitcoin options expiry in cryptocurrency history. Bitcoin traded at $88,596 at expiry, well below the roughly $96,000 max pain level, the price that would have minimized the aggregate payout owed to option holders across all open strikes. A rally followed, peaking above $93,000 in early January. Call-heavy open interest does not by itself establish what traders expected; three weeks after that peak, the rally reversed into a decline of roughly 13%.
The Expiry, By the Numbers
Bitcoin accounted for $23.6 billion of the total notional value in this Bitcoin options expiry, according to CoinDesk's report on the Deribit data, spread across roughly 262,000 contracts per CoinGape's count of the same settlement. Ethereum contributed a further $3.8 billion. Smaller books in XRP and Solana options settled the same day, worth $46 million and $139 million respectively, putting the rounded components at roughly $27.6 billion against the widely reported $27 billion headline. The combined event covered more than half of Deribit's total open interest across every contract maturity on the exchange.
How Max Pain Works
Max pain describes the settlement level that minimizes the aggregate payout owed to option holders across all open strikes, the price where the fewest dollars change hands from sellers to buyers at expiry. As expiry nears, dealers who are long gamma around the dominant strikes hedge by selling into rallies and buying dips, and that flow can pull spot toward the max pain strike in the final hours before settlement; dealers positioned short gamma would amplify moves instead, which is one reason pinning is a heuristic rather than a reliable pattern.
Max pain for the December 26 expiry sat near $96,000 for Bitcoin and $3,100 for Ethereum, based on Deribit open interest data reported by CoinDesk. Bitcoin settled at $88,596, according to Yahoo Finance's coverage of the settlement, roughly $7,400 below that $96,000 level.
Call options outnumbered puts by roughly 2.6 to one heading into the Bitcoin options expiry. CoinDesk calculated a put-call ratio of 0.38: for every 100 call contracts open, only 38 puts stood against them. That is call-heavy open interest, commonly read as bullish, even while spot traded well under the max pain strike, the computed level where option sellers' aggregate payout would be smallest. Open interest by contract type does not by itself reveal net market direction: every option has both a buyer and a seller, and contracts may be hedges or spreads rather than directional bets. Positioning is not a forecast: it describes contracts outstanding, not what the market would do next.
The mismatch is normal. Max pain describes the strike that minimizes the aggregate payout owed to option holders, not a level anyone specifically wants. It says nothing about where buyers expect price to go afterward, and the two do not need to agree.
What Happened At Settlement
Bitcoin had spent most of December in an $80,000-$90,000 range following a sharp pullback from its October all-time high, per CoinDesk's market coverage two days before the Bitcoin options expiry. That range held through settlement: price did not snap toward the $96,000 max pain strike, and it did not break down either.
The setup coincided with heavy IBIT outflows. BlackRock's IBIT, the largest spot Bitcoin ETF, had shed more than $2.7 billion over the five weeks to late November, its longest outflow streak since launching in January 2024, according to CoinDesk's report on the outflow run. A multi-week outflow streak in late 2025 is not the same claim as a losing year overall, and the data above supports only the first one. For more on why large holders kept accumulating through periods like this, see why institutions continue buying Bitcoin during corrections.
The Rally That Followed
By January 5 and 6, 2026, Bitcoin had risen about 5% from its start-of-year level and briefly topped $93,000, according to CoinDesk's report on the January rally. QCP Capital told the outlet that Bitcoin's perpetual funding rate on Deribit jumped above 30% as dealers who were short gamma to the upside had to buy into the rally to stay hedged, pushing price higher still. Open interest in the January $100,000 Bitcoin call climbed by 420 contracts, worth $38.8 million in notional, in a single 24-hour window; that one strike alone carried $1.45 billion in open interest.
That is the options-market feedback loop working as designed. A bullish skew going into a large expiry, followed by dealer hedging that amplifies the move once price breaks toward the strikes where calls are concentrated, is consistent with the short-covering rally that followed. The skew described a positioning bias, not a forecast, and dealer hedging is the mechanism that can turn that bias into price action once it triggers; it does not mean the skew caused the rally on its own.
The Reversal
The move did not survive the next monthly Bitcoin options expiry. On January 29, Bitcoin fell to $81,000, down nearly $10,000 in 24 hours, in a session CoinDesk described as "horrendous". Traders holding long positions on margin lost $777 million to forced liquidations in a single hour, with $1.75 billion liquidated across the full 24-hour window. Analysts pointed to the tariff-driven April 2025 low near $75,000 as the next support level if the decline continued. If you were holding through that stretch, how to navigate a fast market downturn covers the mechanics of position sizing under exactly this kind of move.
From the January 5-6 high above $93,000 to the January 29 low of $81,000, Bitcoin gave back roughly 13% in just over three weeks, more than erasing the post-expiry rally.
Reading The Sequence
Three things happened in order, and each is separately verifiable. A record expiry with bullish positioning settled below max pain. A short-gamma rally carried price up about 5% within days as dealers hedged their call exposure. A reversal three weeks later wiped out the gain and then some. None of the three steps required the market to be wrong about direction at any single point. Positioning skew was consistent with the rally that followed: the put-call ratio of 0.38 was call-heavy open interest, commonly read as bullish, and prices went higher for eleven days. That is a retrospective match, not a demonstrated prediction, since open interest by contract type does not reveal aggregate trader expectations and the same skew says nothing about timing or durability on its own. It also said nothing about the margin debt building underneath that rally, borrowed exposure that amplified the reversal on January 29 once it started, without a continuous data trail showing it caused the turn.
Historical Context
The December 2025 Bitcoin options expiry was not an isolated record. A year earlier, the December 2024 expiry set the previous all-time high at nearly $14 billion across 146,000 contracts, representing 44% of Deribit's total open interest at the time, according to CoinDesk's reporting that month. The December 2025 event surpassed that figure by about 69% in notional terms and broke the exchange's own record again.
$14B expiry, then a record, 44% of Deribit's open interest
$27B expiry, new record, more than half of open interest
Bitcoin tops $93,000 on post-expiry short-gamma hedging
Bitcoin falls to $81,000 in a $1.75B liquidation event
Growth in expiry size year over year tracks how much contractual exposure runs through Deribit's options book. It says nothing about direction: the exchange set a new size record twice in twelve months.
What Held Up And What Didn't
The funding-rate spike above 30% on Deribit perpetuals in the first week of January, reported around January 5-6, marked the kind of crowded-long condition that later liquidation events unwind, though as a single observation it said nothing about when. This piece has a citable source only for that initial spike, not for a continuous reading through the following three weeks, so the funding rate's exact path between January 6 and the January 29 flush is not verified here. Read after the fact, an early-January crowded-long signal lines up with the reversal that followed; read at the time, a trader would have had the spike itself and no fixed rule for when or whether it would resolve.
The $777 million liquidated in the worst single hour of that flush came almost entirely from long positions, evidence that leveraged longs were crowded in that window, though a single liquidation snapshot cannot show how one-sided the broader market's positioning was. The indicators this article covers, open interest by contract type, max pain, and one funding-rate observation, were directionally consistent with the first move and silent on the second one: a crowded-long reading describes vulnerability, not timing, and funding rates and liquidation cascades are a separate signal from open interest and max pain. Reading one without the other is how a directionally-consistent read turns into a badly timed trade. For a broader read on positioning risk beyond a single asset, see portfolio diversification beyond Bitcoin.
What The Sequence Means For Coira's STRICT Score
Coira's STRICT score measures Bitcoin's underlying fundamentals: sustainability, transparency, innovation, community, and tokenomics. It does not move on a single expiry, a funding-rate spike, or a three-week price swing, because none of those change what the network does. The put-call ratio and max pain level describe a different thing: where open contracts are concentrated this week, not what the network's fundamentals are worth, and not, as this article's own caveats establish, a reliable read of net market direction. The expiry data showed call-heavy open interest, commonly read as bullish, but open interest by contract type does not by itself reveal net market direction. STRICT's slower-moving fundamentals were unaffected by either the rally or the reversal that followed it. Treating a short-term options signal as a verdict on long-term value, or the reverse, is the error this sequence is a clean example of. For a longer view on where the broader market sits after a quarter like this one, see Coira's year-end review and 2026 outlook.
Nothing here is financial advice. Bitcoin and other cryptocurrency investments carry substantial risk, including the fast, margin-driven swings described above. Verify current data independently and consult a licensed financial advisor before acting on it.
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