Direct Answer
Crypto options — primarily traded on Deribit for BTC and ETH, with growing availability on Bybit, OKX, and CME — grant the buyer the right (but not the obligation) to buy (call) or sell (put) the underlying asset at a specified strike price on the expiry date. The critical structural difference from equity options: most crypto options are cash-settled in the underlying coin, not in dollars. A BTC call option that expires in-the-money pays out (Settlement Price − Strike Price) / Settlement Price BTC per contract — so your payout in BTC terms is fixed by the price move, but your payout in USD terms also depends on what BTC is worth when you receive it.
DVOL (Deribit Volatility Index) is the crypto equivalent of the VIX — a 30-day implied volatility index for BTC (DVOL) and ETH (ETHVOL) derived from Deribit's options order book. DVOL has historically ranged from 40 (extremely calm, rare) to 200+ (extreme events like March 2020 or FTX collapse). Most BTC options are European style: exercisable only at expiry, not before. Premiums are quoted in BTC per contract (on Deribit, one contract = 1 BTC for BTC options, 1 ETH for ETH options), which means the dollar cost of an option changes with the underlying price even if implied volatility is constant.
Key Takeaways
- Deribit dominates crypto options volume with over 80% of BTC and ETH options open interest as of 2025; CME offers regulated alternatives with USD cash settlement.
- Coin settlement means your option premium and payout are denominated in BTC or ETH — not dollars — creating exposure to the underlying asset even before any option exercise.
- European exercise means you cannot exercise early; the only way to realize value before expiry is to sell the option back into the market.
- DVOL above 80 indicates elevated market stress; DVOL below 50 indicates unusual calm — both signal potential positioning opportunities around volatility mean reversion.
- The volatility skew in crypto options is typically "right-skewed" (calls more expensive than puts on OTM basis) during bull markets, and "left-skewed" during bear markets or stress — opposite to equity options' normal put-skew.
- Crypto implied volatility is structurally higher than equity IV — BTC 30-day IV averages 60–80% annually versus 15–25% for S&P 500 — making option premiums expensive for buyers but rich for sellers with adequate risk management.
- The convexity of coin-settled options creates a second-order risk: a drop in BTC price reduces the USD value of your call payout even if the option is in-the-money.
- Greeks (Delta, Gamma, Theta, Vega) function similarly to equity options but must be interpreted in coin terms and adjusted for the coin-settlement convexity.
Core Concepts
Coin Settlement and Convexity Risk
On Deribit, BTC options settle in BTC. If you buy a BTC call with a $70,000 strike for 0.05 BTC premium and BTC expires at $80,000, your in-the-money payout is: ($80,000 − $70,000) / $80,000 = 0.125 BTC. In USD terms at expiry: 0.125 × $80,000 = $10,000. Simple enough. But the convexity risk appears if BTC then falls from $80,000 to $60,000 after settlement — the 0.125 BTC you received is now worth only $7,500, not $10,000.
This convexity means a long BTC call on Deribit implicitly contains a secondary long BTC exposure through the settlement payout. When BTC rises, your coin payout increases and each coin is worth more — double benefit. When BTC falls after expiry, both the payout amount (if the price move diminishes) and the USD value of the coins decline. This is not a problem if you want BTC exposure; it's a mismatch if you want a pure USD P&L from the option trade. CME's cash-settled options in USD avoid this but require regulatory eligibility and different contract mechanics.
The premium itself is also coin-denominated. If you pay 0.05 BTC for an option and BTC is at $60,000, your USD cost is $3,000. If BTC rallies to $80,000 before the option expires, your 0.05 BTC is still 0.05 BTC but now represents $4,000 in USD — your break-even point effectively shifted. Monitoring premium in both coin and USD terms simultaneously is necessary to properly assess option strategy economics.
DVOL: Crypto's Implied Volatility Index
DVOL (and its ETH equivalent ETHVOL) is computed by Deribit using a methodology similar to the CBOE's VIX calculation: it derives a model-free implied volatility from the option prices across all available strikes and maturities for the nearest 30-day window. DVOL represents the market's consensus expectation of annualized realized volatility over the next 30 days.
A DVOL of 80 means the market expects BTC to move approximately ±80% annualized — or roughly ±7.3% per month (80% / √12). At DVOL of 120, expected monthly moves are approximately ±10.9%. These levels contextualize option premiums: when DVOL is 80, a 1-month at-the-money straddle typically costs 5–8% of notional. When DVOL spikes to 150 (during sharp sell-offs), the same straddle can cost 12–15%.
DVOL is a regime indicator. Sustained DVOL above 100 typically indicates stress or uncertainty (high hedging demand, wide straddle premiums). DVOL below 60 typically indicates calm (option selling strategies like covered calls and cash-secured puts become more attractive to sellers). DVOL mean-reversion strategies — selling vol when DVOL is high, buying when low — have historically been profitable but require significant risk management because vol spikes can persist longer than expected.
Volatility Skew in Crypto Options
In equity options, OTM puts are typically more expensive than OTM calls (left skew) because investors buy puts for downside protection. In crypto, the skew structure is more dynamic and periodically reverses. During bull markets, OTM calls often carry higher implied volatility than OTM puts — reflecting demand for upside exposure and the perception that crypto has asymmetric upside. During bear markets and stress events, the skew reverts toward the traditional left-skew pattern as put buying dominates.
The "25-delta risk reversal" — comparing the implied volatility of the 25-delta call versus the 25-delta put — is the standard measure of skew in crypto options. A positive 25d RR (call IV minus put IV) indicates call skew (upside demand). A negative 25d RR indicates put skew (downside demand). Tracking the 25d RR alongside price action provides additional context about market sentiment beyond what funding rates alone reveal.
Available Venues and Their Differences
Deribit is the dominant venue — BTC, ETH, SOL, and other crypto options with continuous expiries (daily, weekly, monthly, quarterly). Coin-settled. European exercise. No U.S. person eligibility. Bybit offers BTC and ETH options with USDC settlement (not coin), which eliminates the convexity risk — a meaningful difference for dollar-focused strategies. OKX offers options with USDT settlement for some contracts. CME Group provides regulated BTC and ETH options with USD cash settlement; eligible to U.S. persons; higher margin requirements; less strike/expiry granularity than Deribit but backed by CME's clearing house. On-chain options protocols (Lyra, Hegic, Dopex) exist but have lower liquidity, wider spreads, and smart contract risk not present on centralized venues.
Worked Scenario: Protective Put on a BTC Position
Hypothetical example — for education only.
- Setup: Holder of 2 BTC (current price $65,000) buys 2 BTC put options on Deribit with a $60,000 strike, expiring in 30 days. Premium: 0.03 BTC per option × 2 = 0.06 BTC total premium paid. At current price: 0.06 × $65,000 = $3,900 cost.
- Scenario A — BTC falls to $50,000 at expiry: Put is in-the-money. Payout per contract: ($60,000 − $50,000) / $50,000 = 0.2 BTC. Total payout: 0.4 BTC (2 contracts). USD value: 0.4 × $50,000 = $20,000. Spot loss on 2 BTC: (−$15,000) × 2 = −$30,000. Net including option payout: −$30,000 + $20,000 − $3,900 (premium cost at entry) = −$13,900 vs. −$30,000 unhedged. Put reduced the loss by $16,100.
- Scenario B — BTC rises to $80,000 at expiry: Put expires worthless. Loss = premium paid: 0.06 BTC. At $80,000: $4,800 in premium cost. Spot gain on 2 BTC: +$30,000. Net: +$30,000 − $4,800 = +$25,200. The cost of insurance was $4,800 to protect against a $30,000 potential downside scenario.
- Convexity note: The payout in Scenario A is 0.4 BTC worth $20,000 — but if BTC subsequently recovers to $70,000, those 0.4 BTC would be worth $28,000. The coin settlement means the put's USD protection value is path-dependent after settlement.
Measurement Framework
| Measurement | What it tells you |
|---|---|
| DVOL / ETHVOL level | Market's 30-day implied volatility expectation; high = expensive premiums; compare to realized vol for relative value |
| 25-delta risk reversal | Call skew vs. put skew; positive = demand for upside calls; negative = demand for downside puts |
| At-the-money straddle premium (%) | Cost of buying both call and put at current price; reflects expected move size over option term |
| Term structure of IV | Near-term vs. long-term implied vol; inverted (short-dated > long-dated) signals acute stress; normal (long > short) = calm |
| Options OI by strike (Deribit) | Concentration of open positions at key strikes; large call OI = potential gamma squeeze above that level |
| Delta (BTC per option) | Sensitivity of option value to BTC price change; 0.5 delta = option moves 0.005 BTC per $10 BTC move |
Common Failure Modes
Ignoring Coin Settlement Convexity
A trader buys BTC calls expecting a large BTC rally, profits on the calls in BTC terms, but then watches the USD value of the BTC payout erode in a post-expiry correction. If they wanted dollar profits, they needed to convert the BTC payout to USD immediately at settlement. Many option buyers on Deribit hold coin-settled payouts as BTC exposure and are surprised when USD accounting shows lower-than-expected realized gains after a post-expiry pullback.
Always decide at strategy inception whether the payout will be kept as coin or converted immediately. If USD P&L tracking is the objective, plan the post-settlement conversion explicitly.
Treating Crypto Options Like Equity Options for Vol Levels
An equity options trader accustomed to 15–20% IV on the S&P 500 instinctively sells BTC options when DVOL is 80%, treating it as "high." But for BTC, 80% is near the historical median — it's only meaningfully high relative to BTC's own history. The correct comparison is DVOL versus realized BTC volatility, and BTC's realized vol is itself 50–80% annualized in normal periods. Selling options at DVOL 80% while BTC realizes 90% vol results in a losing short-vol position.
Buying OTM Options With Insufficient Vol Cushion
High implied volatility makes OTM options expensive in absolute premium. A trader who buys a far-OTM BTC call (e.g., 50% above current price) in a high-vol environment needs an enormous price move just to overcome the premium paid. At DVOL 100%, the market is already pricing large moves into option premiums. Far-OTM option buyers need both the right direction and the right timing — two independent forecasts to be correct simultaneously.
Missing the European Exercise Constraint
Equity options traders familiar with American-style options sometimes expect to exercise early when a position is deeply in-the-money. European-style crypto options cannot be exercised before expiry. The only way to monetize an in-the-money position before expiry is to sell the option back into the order book — which may have wide spreads on OTM or far-dated options. If liquidity is poor in a specific strike/expiry combination, the effective exit price may be significantly below the theoretical Black-Scholes value.
FAQ
What is DVOL and how does it compare to the VIX?
DVOL is Deribit's 30-day implied volatility index for BTC, computed using a VIX-like methodology from Deribit's options order book. Like VIX measures equity market fear, DVOL measures crypto market uncertainty. The key difference is scale: VIX above 30 is considered high stress; DVOL above 100 is the comparable threshold in crypto, because BTC's baseline volatility is 3–5x higher than the S&P 500's.
Can U.S. persons trade on Deribit?
Deribit restricts access to U.S. persons in accordance with regulatory requirements. U.S.-eligible alternatives include CME Group BTC and ETH options (regulated, USD-settled) and select broker platforms that offer crypto options. Always verify the current terms of service and consult a compliance professional regarding eligibility before trading on any offshore derivatives venue.
What does "1 contract" mean on Deribit?
On Deribit, 1 BTC option contract represents 1 BTC of notional. Premiums are quoted in BTC. 1 ETH option contract represents 1 ETH. This differs from equity options where 1 contract typically represents 100 shares. The coin-based contract size means smaller accounts need fractional contracts — Deribit's minimum contract size is 0.1 BTC for options, allowing participation with less than a full BTC.
Why is crypto options vol skew sometimes positive (calls more expensive than puts)?
In traditional equity markets, investors buy puts for portfolio protection, creating persistent put demand and left skew. In crypto, there are periods — typically during bull markets — when retail and institutional demand for leveraged upside via OTM calls exceeds demand for put protection. This creates right skew (positive 25d risk reversal), where OTM calls trade at higher IV than OTM puts. The direction of skew has historically been a sentiment indicator: positive skew during bullish periods, negative skew during stress.
What is the difference between implied vol and realized vol in crypto?
Realized volatility (RV) is the actual historical volatility BTC has experienced over a specific past period, computed from daily price returns. Implied volatility (IV, or DVOL) is the market's forward-looking expectation embedded in option prices. When IV exceeds RV significantly, options are considered "rich" and selling volatility may have positive expected value. When RV exceeds IV, options were "cheap" in retrospect and buying vol was the right strategy. The IV-RV spread fluctuates constantly and is the core input for relative-value vol trading.
How does theta decay work in crypto options?
Theta (time decay) in crypto options functions identically in structure to equity options: all else equal, option value decays as expiry approaches, with acceleration in the final 30 days (and especially the final week). However, the high absolute volatility of BTC and ETH means the daily dollar value of theta on a BTC option contract is very large relative to the premium paid — crypto options are expensive in absolute terms, so the cost of theta is commensurately high for option buyers who hold too long.
What are the main alternatives to Deribit for crypto options?
Bybit and OKX both offer BTC and ETH options with growing liquidity, and some contracts settle in USDC (eliminating coin-settlement convexity). CME Group offers regulated BTC and ETH options with USD cash settlement accessible to U.S. persons. Binance has periodically offered options products. On-chain options protocols (Lyra Finance, Dopex) offer decentralized alternatives but with lower liquidity and smart contract risk. Deribit remains the dominant venue by OI and volume as of 2025.
What is a covered call strategy in crypto?
A covered call involves holding the underlying asset (BTC) and selling a call option above the current price. If BTC stays below the strike at expiry, the call expires worthless and the seller keeps the premium as income. If BTC rises above the strike, the upside gain is capped at the strike price minus entry price plus premium received. On Deribit this is straightforward since you hold BTC and sell BTC calls. The strategy is popular among BTC hodlers wanting yield enhancement — but in coin-settled terms, the premium income is BTC, which may or may not translate to meaningful USD yield depending on price moves.
Sources
- Deribit Knowledge Base — official documentation on contract specifications, settlement mechanics, Greeks, and DVOL methodology.
- CME Group: Bitcoin Options Specifications — regulated USD-settled BTC options with clearing house backstop.
- Laevitas Analytics — real-time DVOL, skew, term structure, and options OI data for BTC and ETH.
- Deribit Insights — research and analysis on crypto options markets, vol dynamics, and trading strategies.
- Coinglass Options Data — aggregated options OI by expiry and strike across major crypto options venues.
Disclaimer
This guide is for educational and informational purposes only and does not constitute personalized investment, financial, or trading advice. Options trading involves complex risks including potential loss of the entire premium paid. Crypto options markets are largely unregulated outside CME. Eligibility for specific venues varies by jurisdiction — always verify current access restrictions. This is not a recommendation to trade on any specific platform.