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updated —SPY Funding Arbitrage Backtester
Size per leg$
R-trip cost
on +$10000.00 per leg · +$20000.00 turnover · funding never covers this cost
⚠Slippage not modeled — actual cost may differ
Funding ArbitrageLooking at price convergence? → /price-pair
Current Net APR · Snapshot
+0.00%
3d Period Avg+12.82%
swing±19.04%
LONG Phemex · nowSPYXUSDT
+0.00%
3d avg:+0.00%
SHORT Aster · now
+0.00%
3d avg:+12.82%
Entry Spread Now
+0.024%
Eaten by executionL 752.0000 · S 752.1768+$2.35 if it converges
24h range −0.16%…+0.11% · median +0.01%
Long pays every4hShort pays every8h
LONGmaker0.010%/taker0.060%SHORTmaker0.010%/taker0.040%
Loading Funding History…
↗Total PnL
−$9.47
−0.09%
$Avg Daily PnL
+$3.51
+0.0351%
★Best Day
+$5.16
Nov 14
◎Open Interest
Phemex$875.2K
Aster$952.6K⚡Funding APR
+12.81%
annualized · funding only
⚠Execution Cost
−$20.00
entry + exit fees
⏱Payback
5.7d
to break even
◧24h Volume
Phemex$15.6KAster$874.5KLoading 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 (−$20.00 for size $10,000). Slippage scales nonlinearly with position size — try a larger size to see thin upper levels run out.