TxFlow Level Up: trade perps and earn up to 300 USDC at $4M volume. Until Nov 2 Join
Settings8H · net · $10k
LanguageThe language of the site
ThemeDark, or a soft blue-grey
FundingPeriod funding rates are shown in
UnitsPercent or basis points
CostsCount taker fees and slippage in Net
SizePosition per leg used for Net and slippage
ExchangesWhich exchanges to include everywhere
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Funding arb · Price arb / Crypto

SPX

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Backtest 30d
LegExchangePriceFund. /8hEach paymentNext inOIVol 24hLev
LONG
GMXSPX6900/USD [ETH-USDC]
0.3451L +0.0139S +0.0043pay 0.0017% / 1h52m 58s$18K$133K50xLong GMX5% off
SHORT
Aftermath PerpsSPXUSD
0.3453+0.1187get 0.0148% / 1h52m 58s$3K$169K5xShort Aftermath Perps5% off
Price gap+0.080%
Funding gap+0.1048% /8h

Both sides work: funding pays +$31 a day on $10k, and the gap is 0.080% above zero (no 7-day history yet): +$8 more if it goes back.

If you open now and hold

on $10k a leg · figures of the last 7D, not a forecast
Funding+$79+0.1048% /8h now · paid +0.788% over the last 7D
Price—spread +0.080% now · no price history on both exchanges yet
Costsno datano order book for GMX
Result, before costs—no pointsneeds both price histories

Price and funding

1h · history
PRICE SPREAD · 7D
Now+0.080%
Average—
Range—
Wider than now—
FUNDING SPREAD · 7D
Average /8h—
Highest—
Lowest—
Paid you—

Where the spread has been, last 7D

share of time at each level

Funding on every exchange

/8h

SPX on 21 exchanges

lowest funding first

Before you open

2 ok · 1 to watch
  • Note: Order book unknown—
    No order-book sample for GMX: its slippage is not counted.
  • Note: Margin at max leverage$200 + $2,000
    GMX 50x, Aftermath Perps 5x. Keep about 2× this so a sharp move doesn’t liquidate one leg.
  • OK: Same payment interval1h / 1h
    Both legs pay at the same time.
    Next 24h at the current rates, on $10k a leg: +$31.45Long GMX: 24 payments, −$4.16; short Aftermath Perps: 24 payments, +$35.61.
  • Note: No 7-day spread history+0.080%
    The gap cannot be compared with its average yet.
  • Watch: Short leg is thinner$3K vs $18K OI
    Aftermath Perps sets your exit cost. Check its book before closing.
  • Note: No points program—
    Neither exchange runs points right now.
  • OK: No KYC on either legGMX No · Aftermath Perps No
    Both exchanges let you trade without ID.

Profit calculator

both legs, in and out
Position, each leg
Hold for
Orders
Price spread
Funding rate
Funding earned+0.0375%/8h × 21 periods+$78.82
Price spread+0.080% → 0+$8.01
Slippage, 4 ordersno data for GMX—
Fee GMX bp × 2 orders−$12.00
Fee Aftermath Perps bp × 2 orders−$9.00
Net, fees only · 7 days · $10k+$65.82
Costs to cover0.210%Break-even1.2 days
Slippage: GMX: no order-book sample; Aftermath Perps: live order book, 55 min ago

Cost to enter

taker + slippage from mid, one side
BUY · LONGGMX—————
SELL · SHORTAftermath Perps3.6628.6 bp−$29doesn’t fitdoesn’t fitdoesn’t fit

Closing costs about the same again.
GMX: no data.

Alert

SPX news

posts that mention SPX, from every exchangeSearch all news →
10-29 01:05MEXCListingSPX_USDC no longer reported ($SPX) seen by our collector
10-12 18:49Aftermath PerpsListingnew market SPXUSD ($SPX) seen by our collector
09-24 09:32ApeX OmniListing5 up, 81 down on the ApeX board. Median name -6.6%. litecoin:native +9.2% is the only real bid, riding the old-coin rotation that took bitcoin-cash:native up 30% this week after CME said it will list Bitcoin Cash futures on 19 Oct. $SPX -14.1% is the extreme. @OfficialApeXdex on X ↗