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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 ~4.2d
Funding ArbitrageLooking at price convergence? → /price-pair
Current Net APR · Snapshot
+20.29%
7d Period Avg+3.56%
swing±23.12%
LONG WEEX · now
−20.29%
7d avg:−1.52%
SHORT RiseX · nowSPY-PERP
+0.00%
7d avg:+2.04%
Entry Spread Now
+0.082%
Eaten by executionL 747.2000 · S 747.8150+$8.23 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
−$15.03
−0.15%
$Avg Daily PnL
+$1.16
+0.0116%
★Best Day
+$4.27
Nov 12
◎Open Interest
⚡Funding APR
+4.24%
annualized · funding only
⚠Execution Cost
−$23.16
entry + exit fees
⏱Payback
19.9d
to break even
◧24h Volume
Loading 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 (−$23.16 for size $10,000). Slippage scales nonlinearly with position size — try a larger size to see thin upper levels run out.