Aster vs BackPack Funding Arbitrage
24 shared markets · net of estimated fees · updated every few minutes
Aster and BackPack both quote 24 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 BNB — long Aster / short BackPack at 22.0% net APR — but the median across all shared markets is 26.8%, which is the number worth planning around.
Aster / BackPack spreads by market
top 24 by net APR| Market | Long | Short | Gross APR | Net APR | 7d avg | 24h vol · lower leg |
|---|---|---|---|---|---|---|
| EDGE | Aster | BackPack | 245.9% | 240.5% | +28.3% | $160K |
| MET | Aster | BackPack | 154.2% | 148.0% | +83.1% | $11K |
| ZORA | Aster | BackPack | 140.9% | 136.1% | -7.9% | $97K |
| SKR | Aster | BackPack | 139.7% | 135.7% | -21.0% | $223K |
| CHIP | Aster | BackPack | 125.1% | 119.0% | -13.3% | $74K |
| JTO | Aster | BackPack | 98.7% | 93.7% | +14.4% | $22K |
| JUP | Aster | BackPack | 76.0% | 72.1% | +30.1% | $56K |
| S | BackPack | Aster | 87.2% | 60.3% | +33.2% | $11K |
| 0G | BackPack | Aster | 49.2% | 42.2% | -7.7% | $18K |
| PENGU | Aster | BackPack | 45.2% | 40.8% | -0.6% | $39K |
| VVV | BackPack | Aster | 42.0% | 37.0% | +14.6% | $68K |
| STABLE | Aster | BackPack | 38.7% | 31.5% | +38.5% | $13K |
| BNB | Aster | BackPack | 24.1% | 22.0% | +3.4% | $1.7M |
| XMR | BackPack | Aster | 22.4% | 18.9% | -30.2% | $159K |
| BTC | Aster | BackPack | 12.2% | 10.3% | +3.8% | $79.2M |
| XRP | Aster | BackPack | 11.7% | 9.2% | +4.9% | $465K |
| DOT | BackPack | Aster | 13.2% | 6.6% | +16.2% | $134K |
| NEAR | BackPack | Aster | 10.0% | 6.2% | -15.2% | $439K |
| SEI | BackPack | Aster | 12.0% | 6.2% | +53.0% | $20K |
| ETH | Aster | BackPack | 5.6% | 3.6% | +2.5% | $5.6M |
| SOL | Aster | BackPack | 5.4% | 2.7% | +9.2% | $6.2M |
| FOGO | Aster | BackPack | 8.4% | 1.9% | +14.3% | $14K |
| MON | BackPack | Aster | 5.9% | 1.2% | -15.3% | $43K |
| ADA | BackPack | Aster | 4.2% | 1.1% | +4.4% | $203K |
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.
Which venue is the long leg
The long leg is whichever venue currently prices funding lower for that market — it is a property of the market, not of the exchange, and it flips as rates move.
Aster vs BackPack — FAQ
How many markets can you arbitrage between Aster and BackPack?
24 perpetual markets are quoted on both Aster and BackPack right now. 19 of them show a net spread of at least 5% APR after estimated fees, and 4 have at least $1M of 24h volume on the smaller leg.
What is the best Aster / BackPack funding spread right now?
BNB: long Aster and short BackPack for about 22.0% net APR after estimated fees, counting only markets with at least $1M of 24h volume on the smaller leg. The median across all 24 shared markets is 26.8%, so the top of the list is not typical.
Which side pays on the Aster / BackPack pair?
It varies by market: Aster is the long (funding-receiving) leg in 15 of the shared markets and BackPack in the other 9. The direction is set per market by which venue currently prices funding lower.
Trading the Aster / BackPack spread
The trade is one position split across two venues: long the exchange paying the more negative funding, short the one paying the more positive, in the same size. Direction risk is largely offset, and the position earns the funding difference each interval. What limits it is not the headline APR but the smaller leg's liquidity, the fees on both sides, and how long the spread survives — funding decays and flips, often within hours. Per-market detail, including a backtest, is on each market's funding page; the full calculation is in the methodology.
Venue detail: Aster funding rates · BackPack funding rates
Related exchange pairs
Coverage note: Aster and BackPack share 24 markets, 4 of them with real depth — below the 10 markets / 5 liquid this page treats as full coverage, so this is a thin sample rather than a picture of the pair.