Funding rate arbitrage, explained

What funding is for

A perpetual future never expires, so something has to keep it anchored to spot. Funding does that: a periodic payment between longs and shorts. When the perpetual trades above spot, longs pay shorts; when it trades below, shorts pay longs. The rate is set by the imbalance between the two sides.

On Rocket those payments pass directly between traders. The protocol does not take a cut. Funding is a mechanism for keeping the contract honest, not a revenue line.

Why a spread exists between venues

Each venue has its own participants and its own positioning. The same asset can therefore carry meaningfully different funding rates in different places at the same moment. That difference is what a funding arbitrage captures: you go long where you are paid, or pay the least, and short where you collect the most, sized so the two positions offset.

Price movement largely cancels between the legs. What you keep is the funding spread, minus fees and slippage on the way in and out. It is not a mispricing anyone is obliged to correct, which is why it can persist — and also why it can disappear without warning.

What Rocket's funding tool actually does

It lists tokens trading on Rocket that also trade on Extended or Hyperliquid, pairs the cheapest funding venue as the long leg against the richest as the short leg, and ranks by APR. Each row shows current APR, 24-hour, 7-day and 14-day APR, APR at maximum leverage, the price spread between venues, open interest and daily volume.

Opening a row adds a spread history chart over one day, one week or one month, plus order entry for both legs: size, leverage, optional take-profit and stop-loss. Submitting opens the long and the short together. A hybrid mode places a limit on one leg first and sends the market hedge once that limit fills, which is cheaper on the spread and riskier in the window you are one-sided — that mode needs the tab left open until the hedge is sent.

The risks that make it a trade, not a yield

The positions table tracks both legs together so those failures are visible: size, open price, notional, current APR, unrealised PnL, funding received and a close-all action. Treat it as a monitored position.

• The spread can converge or invert, at which point the position costs rather than earns.
• Margin is managed per venue. On some pairs the Hyperliquid leg uses isolated margin while Rocket uses cross margin, so one side can approach liquidation while the other looks healthy.
• Fees and slippage on entry and exit come out of the spread you collect. A fat APR on a thin book is not the same trade as a modest APR on a liquid one.
• The two legs are separate positions. If one fill fails, you are directional until you close or complete the other side.