Perpetual Futures (Perps)

How Perps Work

A perpetual futures contract mirrors the price of an underlying asset — such as BTC, ETH, or SOL — without requiring the trader to hold the actual token. Traders open long positions (betting the price will rise) or short positions (betting the price will fall) with leverage ranging from 2x to 125x depending on the platform. The contract has no settlement date, so it can be held as long as the trader maintains sufficient margin in their account.

To prevent the perpetual contract price from diverging too far from the spot price, exchanges use a funding rate. This is a periodic payment (usually every 8 hours) exchanged between long and short traders. When the perp price is above the spot price, longs pay shorts, incentivizing the price to converge downward. When the perp price is below spot, shorts pay longs.

Perps are available on centralized platforms like Binance, Bybit, and OKX, as well as decentralized protocols like dYdX, GMX, Hyperliquid, and Drift. On-chain perp platforms use smart contracts and oracle price feeds to manage positions, liquidations, and funding rate calculations without a central intermediary.

Why Perps Matter

Perpetual futures are the most traded instrument in crypto markets, often generating 3-10x the volume of spot markets. They enable capital-efficient speculation, hedging, and market-making strategies that are not possible with spot trading alone. A trader who holds $10,000 of ETH in a wallet can open a short perp position to hedge against a potential price drop without selling their actual ETH.

Perps also contribute to price discovery by aggregating global sentiment about future price direction. The funding rate serves as a real-time indicator of market bias: consistently positive funding suggests bullish over-leverage, while negative funding signals bearish positioning. Traders and analysts monitor funding rates to gauge market sentiment and anticipate potential reversals.

Real-World Example

A trader believes BTC will rise from $65,000 and opens a 10x long perp on Hyperliquid with $1,000 margin, controlling a $10,000 position. If BTC rises 5% to $68,250, the trader's profit is $500 (50% return on the $1,000 margin). However, if BTC drops 10% to $58,500, the $1,000 loss equals their entire margin and the position is liquidated. During the 3 days the position is open, the funding rate is +0.01% every 8 hours, meaning the trader pays $1 per period to short holders. This funding cost accumulates and reduces overall profitability on leveraged long positions during bullish market conditions.