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updated —SPY Funding Arbitrage Backtester
Size per leg$
R-trip cost
on +$10000.00 per leg · +$20000.00 turnover · funding covers it in ~1.6d
Funding ArbitrageLooking at price convergence? → /price-pair
Current Net APR · Snapshot
+51.45%
3d Period Avg+13.06%
swing±22.67%
LONG WEEX · now
−23.30%
3d avg:−5.69%
SHORT RiseX · nowSPY-PERP
+28.15%
3d avg:+7.37%
Entry Spread Now
+0.077%
Eaten by executionL 748.5000 · S 749.0800+$7.75 if it converges
24h range −0.04%…+0.16% · median +0.03%
Long pays every8hShort pays every1h
LONGmaker0.020%/taker0.080%SHORTmaker0.010%/taker0.030%
Loading Funding History…
↗Total PnL
−$11.84
−0.12%
$Avg Daily PnL
+$3.78
+0.0378%
★Best Day
+$3.68
Nov 14
◎Open Interest
WEEX$594.9K
RiseX$4.27M⚡Funding APR
+13.81%
annualized · funding only
⚠Execution Cost
−$23.19
entry + exit fees
⏱Payback
6.1d
to break even
◧24h Volume
WEEX$3.16MRiseX$4.06MLoading Cumulative PnL…
How it works: Funding PnL is bucketed daily from real settlement history. Execution Cost = round-trip taker fees + fees only (orderbook snapshot stale) on both legs (−$23.19 for size $10,000). Slippage scales nonlinearly with position size — try a larger size to see thin upper levels run out.