Perpetual Futures Funding Rate
The perpetual futures funding rate is a periodic payment mechanism designed to keep the price of a perpetual futures contract tethered to the underlying spot index price. Because perpetual contracts do not have an expiration date, they cannot rely on traditional convergence to maintain price alignment.
When the perpetual price is higher than the spot price, long position holders pay a fee to short position holders, incentivizing shorts and discouraging longs. Conversely, if the perpetual price is lower than the spot price, short holders pay long holders.
This mechanism forces the derivative price to remain close to the spot price through financial incentives. Traders monitor these rates to gauge market sentiment and to participate in funding rate arbitrage strategies.