Call Option

A call option is a contract giving the buyer the right, but not the obligation, to purchase an asset at a fixed strike price on or before an expiration date. The buyer pays a premium for that right. A call on gold struck at 2,700 dollars an ounce, for example, pays off at expiry only if spot gold trades above 2,700 dollars.

Why it matters

Calls let investors express a bullish view with defined risk: the most a buyer can lose is the premium paid. They also let holders of an asset earn income by selling covered calls against their position, trading away upside for cash today. Option prices encode the market's estimate of future volatility, so call premiums double as a real-time gauge of how uncertain traders believe the road ahead is.

In the gold vs bitcoin debate

Options on gold futures have traded on COMEX for decades, giving gold a mature volatility market. Bitcoin's listed options market is younger, with offshore venues leading and options on United States spot bitcoin ETFs arriving in late 2024. Because bitcoin's implied volatility routinely runs several times higher than gold's, bitcoin calls are far more expensive relative to the underlying asset, a direct market price on the difference in the two assets' stability.