What the funding rate is and why it matters when trading perpetuals

A contract that never expires

A perpetual contract is a derivative that tracks the price of a coin and never expires. With a traditional futures contract, the price converges to the spot price on the expiry date. A perpetual has no expiry date, so the market needs another way to keep the two prices close. That mechanism is funding.

Funding is a periodic payment between traders who are long and traders who are short. It does not go to the exchange. It leaves one side's pocket and lands in the other's.

Who pays whom

• Positive funding: the perpetual trades above the reference price. Longs pay shorts. This encourages selling and pulls the price back.
• Negative funding: the perpetual trades below the reference price. Shorts pay longs.
• The amount is proportional to position size. A $10,000 position with 0.01% funding for the period pays or receives $1 for that period.

Funding on Hyperliquid

On Hyperliquid, funding is calculated and paid every hour. The rate is usually shown per hour and also annualized. Both say the same thing on different scales. The formula and limits are in the exchange's official docs (https://hyperliquid.gitbook.io/hyperliquid-docs).

In practice, funding matters more the longer a position stays open. For a trade that lasts a few hours, it is almost always small next to the trading fee. For a position held for weeks, it can eat a large share of the result.

When funding becomes a warning

Very high positive funding shows that many traders went long with leverage. That does not predict a drop, but it leaves the market fragile. A small dip can trigger a chain of liquidations and speed up the move.

That is why Aval checks each coin's funding before scoring a trade. A breakout with neutral funding tends to be cleaner than a breakout where the whole market is already long. When funding is extreme and volume is unusually high in a thin market, JEV can veto the signal on suspicion of manipulation.

Summary for everyday use

• Funding is a payment between traders, not an exchange fee.
• Positive: longs pay shorts. Negative: shorts pay longs.
• The cost grows with how long the position stays open.
• Extremes signal a market leveraged to one side, which raises the risk of sharp moves.