KoinlyticsFunding rate arbitrage is the trade of collecting perpetual futures funding while keeping zero directional exposure. Ethena scaled this to $10B; individual traders have run it for years. The mechanics are straightforward, the risk management is not.
The setup
Long 1 BTC spot on Coinbase. Short 1 BTC perp on Binance. If Binance perp funding is +0.02% per 8h, you earn ~22% APR just from funding.
Cross-venue is the key
Single-venue basis trades (long spot on Binance, short perp on Binance) work but leave counterparty risk concentrated. Cross-venue splits it: spot on Coinbase (regulated custody), perp on Binance or Hyperliquid (perp liquidity). If either fails, only half your position is at risk.
Yield on cash while you wait
The short leg requires margin. That margin can be USDC earning stablecoin lending yield on Aave (~3-6%), or T-bill yield via BUIDL (~5%). This layers 3-6% on top of the funding capture.
Ethena's version
USDe holders deposit stETH (or ETH). Ethena stakes it (earning ~3-4%), then shorts ETH perps across CEXs to hedge the ETH exposure. Users get a stable USDe backed by (LST + short position + cash reserves). Yield is passed back via sUSDe wrapper.
Kill switches worth setting
- Funding < 0 for 3 consecutive periods. Trade thesis broken, close.
- Basis > 2%. The spread between spot and perp has widened suspiciously. Something is happening on one venue.
- CEX withdrawal delay > 4h. Panic warning.
- LST depeg > 1%. The collateral is no longer collateral.
Risks the marketing hides
- Cross-venue transfer risk during a stress event (spot on Coinbase, need to top up margin on Bybit).
- Negative funding for extended periods (bear cycles).
- Exchange insolvency (2022 FTX).
- Regulatory action against perp venues in your jurisdiction.