About $12.37 billion of Bitcoin options across Deribit, OKX and Bybit expires Friday, October 30, at 08:00 UTC—4:00 a.m. Eastern—according to the Swiftedge snapshot supplied for this analysis. That is outstanding contract exposure, not an incoming Bitcoin purchase order, and the much-discussed $78,000–$79,000 max-pain zone is a description of positioning, not a forecast.
What the expiry number measures
The Swiftedge snapshot, dated October 29 at 01:05 UTC, counts 152,888 BTC of open interest, worth approximately $12.37 billion, or 34% of all open BTC options across the covered venues. Those are dated observations; live trackers can change as prices and positions move.
Basecamp’s expiry analysis uses a narrower denominator: 136,166 BTC on Deribit alone, about $11.0 billion at an index price of $80,720. OKX adds 8,217 BTC, approximately $663 million. Deribit’s October date represents roughly 35% of its outstanding BTC options and is its largest expiry until the December 25 quarterly.
This explains why apparently competing headlines can describe the same event. Dollar notional changes with Bitcoin’s price even if nobody trades. Adding venues changes the contract count. A Deribit-only total and an aggregate total answer different questions; readers should check the venue, expiry series and observation time before comparing them.
Ethereum is a separate book. Basecamp counts about $764 million of Deribit ETH options expiring that day, with $2,500 max pain. Adding that exposure to a Bitcoin headline would change the denominator again.
The Fed backdrop is separate from the options book
The Federal Reserve held its target range at 3.75%–4% on October 28, as expected, while acknowledging elevated inflation and leaving another increase possible. In the Motley Fool’s late-October 28 market snapshot, Bitcoin stood at $81,220.35, up 0.52% over the previous day but down 3.4% for the week. ETH was $2,363.24 and SOL $102.60.
That combination matters for interpretation. A positive daily move does not erase a weaker week, and an expected rate decision does not dictate the direction of the next options settlement. Macro news can change demand independently of the positions already sitting in the expiry book.
The expiry calendar tells us when contracts end. It does not tell us how investors will respond to inflation, rates or changing risk appetite afterward.
Max pain is a broad valley
Max pain is the hypothetical settlement price at which option holders collectively receive the smallest payout. It is an arithmetic calculation using open interest, not a model of future buying and selling.
Basecamp puts the minimum at $78,000, while other trackers place it at $79,000. For this book, the difference has little analytical significance because the payout curve is almost flat across a much wider area.
Basecamp estimates aggregate holder payouts of about $126.5 million at $78,000 and $135.1 million at $81,000. Across $75,000–$81,000, the spread is under $9 million against an expiry of roughly $12 billion. Payouts rise more noticeably farther away: approximately $168 million at $84,000 and $306 million at $90,000.
With spot around $80,855 in that analysis, Bitcoin already occupied the broad low-payout valley. Calling the minimum a magnet overstates what the calculation establishes. It also ignores premiums paid, offsetting positions and the fact that holders need not share a common objective.
Pinning can occur around concentrated strikes as dealers adjust hedges in the final session. But open interest alone does not establish dealers’ net exposure or the direction of their next hedge. Any expiry-related influence can fade as hedges come off after settlement.
The biggest calls are far above spot
The Basecamp book contains 87,551 BTC of calls against 48,614 BTC of puts, a 0.56 put/call ratio. That looks call-heavy, but the strikes explain why it is not an automatic bullish signal.
The largest call concentrations are 19,948 BTC at $95,000, 11,286 BTC at $100,000, and 10,728 BTC at $90,000. In total, 58,832 BTC of calls sit at $90,000 or above—about two-thirds of all calls and roughly $4.7 billion in underlying notional exposure. Only about 14% of calls are in the money.
In Basecamp’s observation window, reaching the lowest of those distant strikes required roughly 11% in five days. That is context from its snapshot, not a fresh countdown from publication. Puts are distributed across $65,000–$75,000, with the largest concentration at $70,000, totaling 4,389 BTC.
Options prices give another perspective. Basecamp’s $80,000 straddle cost roughly $2,560, interpreted as pricing about a 3% move by Friday, approximately $78,300–$83,400. Swiftedge’s later snapshot showed 29.5% at-the-money implied volatility and an expected move of ±1.8%, or $79,542–$82,379.
These estimates use different snapshots and measures. Neither range is a floor or ceiling, and neither supplies a directional forecast.
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Settlement uses an average, not the final tick
Deribit’s settlement rules specify European-style, cash-settled options. In-the-money contracts exercise automatically; the underlying asset is not physically delivered.
The decisive price is a 30-minute time-weighted average of the relevant Deribit index from 07:30 to 08:00 UTC. Snapshots arrive roughly every four seconds, producing about 450 observations. The method is designed to reduce the influence of last-second price manipulation.
A dramatic final trade therefore does not determine the entire settlement value. The averaging window matters, followed by the adjustments traders make once expiring contracts and their associated hedges disappear.
US readers hold different contracts
Deribit is useful market intelligence for Americans, but it is not a directly accessible US trading venue: its Restricted Jurisdictions policy expressly includes the United States. US readers should distinguish offshore positioning from the settlement rules of the products available through their own accounts.
CME Bitcoin options are options on Bitcoin futures, with a 5 BTC contract unit. Their underlying futures are financially settled, with final pricing tied to the CME CF Bitcoin Reference Rate. The CME product description and benchmark methodology describe a different clock: the BRR is published at 4:00 p.m. London time, using a one-hour window divided into 12 five-minute partitions. An option on futures is not the same instrument as an offshore option or an option on ETF shares.
Spot-bitcoin ETF options introduce a different exercise and delivery structure. The SEC’s September 20, 2024 IBIT approval, Release No. 34-101128, established American-style exercise and physical settlement in shares. American-style exercise permits exercise before expiration, so assignment risk is not confined to a single offshore settlement instant.
That original approval set position and exercise limits at 25,000 contracts, the lowest limit available in the options industry. This is the historical approval baseline, not a reason to assume every subsequent exchange rule remains unchanged. Demand was substantial immediately: Nasdaq reported 353,716 contracts on November 19, 2024, placing IBIT’s debut in the top 1% of options products traded.
The rulebook continues to evolve. IEX filing SR-IEX-2026-34, filed September 22, 2026, accompanied the exchange’s October options launch. It establishes listing and withdrawal criteria for options on trusts holding single or multiple crypto assets and amends IBIT position and exercise limits. It mirrors changes approved for ISE, MEMX and MIAX; its public comment window closed October 28.
The practical distinction is three settlement clocks and three products: Deribit’s morning UTC average, CME’s London reference-rate framework, and US ETF options governed by equity-options exercise and share-delivery rules. A Deribit max-pain estimate cannot simply be copied onto an IBIT strike or treated as the settlement target for a CME contract.
For IRS reporting, a purchased option that expires worthless realizes a loss. Reporting depends on the contract type—exchange-traded index options, equity or ETF options, and offshore derivatives require distinct classification. The shared label “Bitcoin options” does not establish identical tax treatment.
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Watch the market after the contracts disappear
Expiry retires existing risk; it does not mechanically create demand equal to the headline notional. The informative period is the hedge unwind after 08:00 UTC Friday and the spot trading that follows. Removing hedges can change market behavior without prescribing its direction.
The next books provide context. In the CoinClass snapshot used here, November 27 carries about $3.33 billion of open interest and $81,000 max pain; December 25 carries about $11.08 billion and $75,000 max pain. Those figures map outstanding positions, not future destinations.
Watch whether spot closes above $82,850 or below the October 15 low near $79,800, the levels framing Basecamp’s analysis. Price behavior after settlement will show whether a move persists once the expiring book is gone. The size of Friday’s headline cannot answer that in advance.