Extended and MEXC both quote 27 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 MEXC at 31.4% net APR — but the median across all shared markets is 8.3%, 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 6 markets go long on Extended and 21 on MEXC. 18 markets clear 5% net APR, 11 clear 10%.

Extended pays funding every 1h on 153 markets; MEXC pays every 4h on 273 markets and every 8h on 126 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. Extended quotes 153 perpetual markets in total and MEXC quotes 400; the 27 they share are what this page ranks. Across its own book Extended runs a median funding rate of 5.3% and MEXC 7.4%, 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.