Bitcoin options explained: calls, puts and the Greeks

Bitcoin options are contracts that give the buyer the right, but not the obligation, to buy bitcoin (a call) or sell it (a put) at a preset price — the strike — on the expiry date. The buyer pays a premium for that right, and the premium is the most they can lose. The seller collects the premium but takes on the obligation, and with it much larger risk. As of 3:06 AM ET on November 9, 2026, a Deribit call with an $80,000 strike expiring November 27 cost about $605 with the BTC index at $73,784 (Deribit API). Below we unpack what that number means and how to read it.

What is a bitcoin option, in plain terms?

An option works like an insurance policy, or a deposit that locks in a purchase price. You pay a small amount now for the right to trade later — if the trade turns out to be worth it. If it doesn't, the right simply expires and you lose only what you paid.

Every option has four parameters (Options Industry Council):

A Deribit instrument name packs all of this into one string: BTC-27NOV26⁠–⁠80000-C is a bitcoin call with an $80,000 strike expiring November 27, 2026. Deribit options are European-style: they can only be exercised at expiry, at 08:00 UTC, not before. You can still sell the option itself at any time before then.

Calls vs puts: how the buyer makes money

You buy a call when you expect the price to rise. At expiry it is worth the bitcoin price minus the strike if the price is above the strike, and zero if it is below. To profit, the price has to clear the strike plus the premium — the breakeven.

You buy a put when you expect a drop or want to insure coins you already hold. At expiry it is worth the strike minus the price if the price is below the strike, and zero otherwise.

Here is the payoff at expiry for two real Deribit options, priced at 3:06 AM ET on November 9, 2026 (premiums converted to dollars at the $73,784 index):

Notice the asymmetry: the buyer's loss is capped at the premium, while a call's upside is open-ended. The price of that is probability. For the 80,000 call just to break even, bitcoin has to rise about 9.2% in 18 days; the 70,000 put needs a drop of about 6.7%. Most far out-of-the-money options expire worthless.

Who sells options, and what do they risk?

Every buyer is matched with a seller, also called the writer. The writer pockets the premium up front and keeps it if the option expires worthless. If the price moves against them, though, they owe the difference — and on a short call the loss in a rally has no ceiling. That's why exchanges require margin from sellers and liquidate them when collateral runs short, just as with futures (see our guide to crypto liquidations).

Selling options is mostly a game for professional desks and funds, who earn from time working in the seller's favor. For a beginner, buying — where the risk is known in advance — is the more sensible starting point.

What determines an option's price?

The premium has two parts (Options Industry Council):

1. Intrinsic value — what the option would be worth if it expired right now. For the 80,000 call with BTC at $73,784 that's zero: nobody pays above market.
2. Time value — what you pay for the chance that price moves your way before expiry. It is higher the more time is left and the bigger the moves the market expects.

Expected movement is captured by implied volatility (IV), backed out from option prices themselves. IV was 37.7% annualized for the 80,000 call, 42.3% for the 70,000 put and 39.0% for the near-the-money 74,000 call (Deribit API). Puts trading at higher volatility than equally distant calls is called skew: the market pays more for downside protection. The market-wide IV level is tracked by the DVOL index, which stood at 41.2 at 08:00 UTC on November 9, up from 40.3 a week earlier (our Deribit data; more in our DVOL guide).

The option Greeks: delta, gamma, theta, vega

The "Greeks" measure how an option's price reacts to different inputs. Deribit calculates them with the Black-Scholes model and returns them in every ticker (Deribit API docs). Definitions follow Optiver:

Deribit data as of 3:06 AM ET on November 9, 2026, November 27 expiry.

How to read them:

• Delta. A near-the-money call has a delta around 0.5: a $1,000 rise in bitcoin adds roughly $500. The far 80,000 call, at 0.19, gains only about $190. Traders also use delta as a rough proxy for the odds of finishing in the money.
• Gamma. Highest for near-the-money, short-dated options, whose delta swings with every move. This is what forces market makers to hedge and can amplify price moves ahead of options expiry.
• Theta. Time works against the buyer. The 74,000 call cost about $2,546 and was losing about $71 a day, and decay speeds up as expiry approaches.
• Vega. Option buyers benefit when volatility rises. If IV climbs 5 points, the 74,000 call gains about $325 even if the price doesn't move.

Where can you trade bitcoin options?

The main venues differ in settlement and access:

• Deribit is the crypto options exchange whose data CoinLab uses for open interest and max pain. Its classic BTC options are "inverse": premium and payout are in bitcoin, one contract is 1 BTC and the minimum order is 0.1 BTC (instrument spec via API). Expiries are daily, weekly (Fridays), monthly and quarterly. On November 9, 2026, open interest in Deribit BTC options was 336,651 BTC, about $24.9 billion (our data).
• CME is a regulated US exchange listing options on bitcoin futures, including micro contracts. They settle in dollars and require a broker with CME access.
• Bitcoin ETF options. Since November 19, 2024, options on BlackRock's iShares Bitcoin Trust (IBIT) have traded on Nasdaq (Nasdaq). These are standard listed equity options, available through a regular brokerage account.
• Crypto exchanges such as Binance, OKX and Bybit also offer options, usually settled in USDT or USDC. Availability depends on your country.

What the options market looked like on November 9, 2026

According to our Deribit data as of 08:00 UTC on November 9, the biggest near-term expiry is November 27, with 73,766 BTC of open interest and max pain at $80,000. Even more is open for December 25: 141,436 BTC. The put/call ratio by open interest was 0.72, meaning more calls than puts (our data). Yet bitcoin had fallen almost 11% over 30 days and traded below $74,000 (CoinLab bitcoin page), and puts carried higher IV than calls: bullish positions are still on the books, but downside insurance costs more. For why price often misses max pain, see our max pain explainer; for positioning, see the put/call ratio guide.

Common mistakes

• Buying cheap far-out options as lottery tickets. A $605 call looks affordable, but a 0.19 delta says the odds of finishing in the money are slim, and theta eats about $46 a day.
• Ignoring volatility. You can call the direction right and still lose: if IV drops after you buy, the option can lose value even as price moves your way.
• Selling options without respecting the risk. The premium arrives up front, but a short call's loss in a sharp rally is unlimited, and the margin can be liquidated.
• Forgetting about BTC settlement. On Deribit, inverse options pay premium and payout in bitcoin, so your dollar result also depends on the BTC price at expiry.
• Confusing options with futures. Perpetual futures have no expiry and no premium, but they carry funding costs and liquidation risk for buyers too.

FAQ

Can I lose more than I paid when buying an option? No. The most a call or put buyer can lose is the premium. Unlimited risk sits with the seller.

Do I need to do anything on expiry day? Not on Deribit: in-the-money options are exercised automatically at 08:00 UTC and the rest expire. You can close the position earlier by selling the option.

How much does a bitcoin option cost? It depends on strike, time and volatility. On November 9, 2026, a near-the-money call expiring in 18 days cost about $2,546 per 1 BTC, while the far 80,000 call cost about $605.

How is a call different from buying bitcoin? A call needs less capital and caps your loss at the premium, but it loses value over time. A coin doesn't expire.

This is not investment advice.