BIRB arbitrage explained
Right now Moonbirds (BIRB) trades on 7 venues we scan: 7 perpetual markets, 5 spot markets and 0 DEX pools. The lowest ask is on Bybit spot at $0.0626 and the highest bid on Gate perp at $0.0627.
The widest BIRB perpetual spread is between MEXC and Gate: long BIRB on MEXC at $0.0626 and short on Gate at $0.0627 for +0.06% gross, or -0.10% after the 0.16% two-leg fee model. No transfer is needed: both positions stay on their exchanges until the prices converge. The funding difference on this pair is 0.000% per day, which the position collects while it is open.
For a spot–perpetual (cash-and-carry) trade, the best BIRB route is to buy spot on Bybit and short the perpetual on Gate: +0.13% gross, -0.07% net, with +0.030% a day of funding on the short leg.
Spot–spot BIRB arbitrage (buy on Bybit, withdraw, deposit and sell on Gate) shows +0.11% gross right now. It only works if withdrawals on the buying exchange and deposits on the selling exchange are open, so check the D/W dots before moving coins.
Small BIRB gaps usually disappear after fees, slippage and funding. Look at the Net column, the executable Depth and the spread history before trading: a gap that has been open for days is a different trade from a one-minute spike.
Related: BIRB funding rates · BIRB spread charts · Moonbirds price · arbitrage scanner for all coins.