Perpetual Swap Funding Rate

Calculation

The perpetual swap funding rate represents a periodic payment exchanged between traders holding long and short positions, designed to align the perpetual contract price with the underlying spot market price. This mechanism functions as a synthetic interest rate, incentivizing arbitrageurs to maintain price parity and mitigating deviations from the index price. A positive funding rate indicates longs pay shorts, suggesting the perpetual contract trades at a premium to the spot, while a negative rate signifies shorts pay longs, indicating a discount. Its magnitude is directly influenced by the bid-ask spread and the order book imbalance, reflecting market sentiment and trading pressure.