funding rate

The funding rate is the elegant trick that keeps a never-expiring perpetual future glued to the real spot price. Since there is no settlement date to force the contract and the underlying together, the protocol instead makes the two sides of the market pay each other a small recurring fee. When more traders are leaning long and the perpetual trades at a premium to spot, longs pay shorts; when the crowd is short and the perp trades at a discount, shorts pay longs. This payment makes the expensive side costly to hold and the cheap side rewarding, dragging the contract price back toward the index.

Concretely, funding is exchanged at fixed intervals — commonly every 8 hours on centralized venues, often every hour or even continuously on-chain — and is paid directly between position holders, not to the exchange. The rate usually combines two pieces: an interest-rate component and, more importantly, a premium component measuring how far the perp's price sits above or below the index. A trader's payment is the rate multiplied by their position's notional size, so a 0.01% 8-hour rate on a 100,000-dollar long means paying 10 dollars to the shorts that period.

Funding is therefore both a balancing mechanism and a tradable signal. Persistently high positive funding tells you the market is crowded long and longs are bleeding fees to shorts every interval, a setup that often precedes long squeezes. Strategies like cash-and-carry exploit it directly: hold the spot asset, short the perpetual, and collect funding as a market-neutral yield while the two prices converge. Because funding compounds over time, even a modest rate can dominate the economics of holding a leveraged position for days or weeks.