Perpetual Futures Dominate Crypto Markets with Risky Mechanics

Perpetual futures are the most traded instrument in crypto markets, generating more volume than spot markets for major assets like Bitcoin and Ethereum. However, many traders encounter them without understanding their mechanics, which can be costly.

A perpetual future is a derivative contract that tracks an asset's price without an expiry date, kept in line with spot prices through a recurring funding rate payment between longs and shorts. The funding rate is the core mechanic: when longs dominate, they pay shorts, and when shorts dominate, they pay longs, continuously pulling the contract price back toward the spot index.

Leverage amplifies both gains and losses in perpetual futures, with positions automatically closed through liquidation when collateral falls below the maintenance margin threshold. The funding rate formula used by most exchanges combines two components: an interest rate component reflecting borrowing rates, and a premium or discount component calculated from the difference between the mark price and the index price.

Decentralized exchanges like Hyperliquid handle funding differently, using continuous funding calculations rather than fixed eight-hour windows. The concept of perpetual futures was pioneered by BitMEX in 2016, and today every major derivatives venue lists perpetual contracts as their primary product.