The funding rate is the cost mechanism that aligns the prices of Perptual Futures with the spot prices. When the funding rate is positive, long positions pay short positions; conversely, when it is negative, short positions pay long positions. Through the transfer of costs, it encourages prices to converge.
The funding rate is composed of the interest rate differential and the premium index, usually calculated every 8 hours. The interest rate reflects the cost of holding the asset versus borrowing, while the premium index is adjusted based on the difference between the contract and spot prices to correct the price.
The positive and negative changes in the funding rate represent the market’s bullish and bearish trends. A positive value indicates a strong bullish atmosphere, while a negative value suggests a dominant bearish sentiment. This fee directly impacts the cost of holding positions and is an important basis for traders to assess market activity.
Investors can go long on spot by buying and simultaneously shorting Perptual Futures to gain profits from the funding rate. This strategy is notably effective when the funding rate significantly deviates from zero, but one should be mindful of transaction fees and market risks.
Over-reliance on funding rate signals may lead to erroneous judgments, and neglecting transaction fees and slippage costs can weaken arbitrage returns. When participating with high leverage, the risk of market reversal is also significant.