What is a Call Option?
A call option is a financial contract that gives the buyer the right, but not the obligation, to purchase an underlying asset at a predetermined price called the strike price on or before a specific expiration date. The buyer pays a premium for this right. Call options profit when the underlying asset price rises above the strike price.
How Call Options Work
When you buy a call option, you pay a premium upfront. If the underlying asset price rises above the strike price before expiration, you can exercise the option, buying the asset at the lower strike price and profiting from the difference. If the price stays below the strike, you simply let the option expire, losing only the premium paid.
Example: You buy a BTC call option with a $50,000 strike price for a $2,000 premium. If BTC rises to $60,000, you can exercise to buy at $50,000, gaining $10,000 minus the $2,000 premium, for $8,000 net profit. If BTC stays at $45,000, you lose only the $2,000 premium.
Call Option Terminology
The strike price is the price at which you can buy the underlying. The premium is the cost of the option contract. Expiration is the date by which the option must be exercised. American-style options can be exercised anytime before expiration, while European-style can only be exercised at expiration.
In-the-money calls have strike prices below the current asset price. Out-of-the-money calls have strikes above current price. At-the-money calls have strikes near current price.
Call Options in Crypto
Crypto options are traded on platforms like Deribit for centralized trading and DeFi protocols like Lyra, Premia, and Dopex. Unlike traditional options, crypto options often have shorter expirations and higher volatility premiums reflecting the market's inherent volatility.
Settlement in crypto options varies. Some settle in the underlying asset through physical settlement, while others settle in stablecoins or the profit difference through cash settlement.
Call Option Strategies
Long calls provide leveraged upside exposure with limited downside equal to the premium. Covered calls involve selling calls against assets you already own to generate income. Call spreads involve buying and selling calls at different strikes to define risk and reward.