Aster and Extended both quote 49 of the same perpetual markets, so a delta-neutral position can be split across the two and collect the difference in their funding. The widest spread on a market with real depth is ZEC — long Extended / short Aster at 25.3% net APR — but the median across all shared markets is 8.5%, which is the number worth planning around.

The long leg is whichever venue prices funding lower for that market. It is a property of the MARKET, not of the exchange, and it flips as rates move: here 17 markets go long on Aster and 32 on Extended. 33 markets clear 5% net APR, 22 clear 10%.

Aster pays funding every 4h on 136 markets and every 8h on 95 markets; Extended pays every 1h on 153 markets. The two clocks differ, so one leg settles while the other is still accruing: a position held for only a few hours can pay one side without ever collecting from the other. Aster quotes 242 perpetual markets in total and Extended quotes 153; the 49 they share are what this page ranks. Across its own book Aster runs a median funding rate of 10.9% and Extended 5.3%, so the edge here comes from individual markets rather than from a standing gap between the venues.

Net APR subtracts entry and exit fees, both legs' bid/ask spread and estimated slippage from the gross funding spread. The 7-day average is historical gross funding for the same pair: a current rate close to it suggests the spread has persisted, one far above it is usually a spike that will decay.