Two new perp listings for A (Vaulta) – AUSD and AUSDT – are now available to trade on BitMEX, with up to 33.3x leverage.
Trading for both contracts started on 28 May 2025 at 12:00 UTC. You will be able to trade AUSDT here and AUSD here.
If you haven’t signed up for a BitMEX account yet, we’re currently offering up to $5,000 in BMEX Tokens for verified users- you can register here.
AUSD Contract Specs
As with all quanto contracts, the AUSD product has a fixed Bitcoin multiplier, regardless of the A/USD price. This allows traders to long or short the A/USD exchange rate without ever touching A or USD.
Traders can post margin in XBT, and earn or lose in XBT as the A/USD rate changes.
This quanto risk premium may be one of the factors that results in the AUSD swap trading at a premium/discount to the AUSD spot price.
For an explanation of the same concept, check out this blog post referencing ETHUSD.
Key contract details for our AUSD listing:
- Symbol: AUSD
- Margin Currency: XBT
- Bitcoin Multiplier: 0.0001 XBT (10,000 Satoshis)
- XBT Contract Value: AUSD Price * Bitcoin Multiplier (10,000 Sats / 1 USD)
- Underlying: .BA
- Max Leverage: 33.3x
- Risk limit: 10 XBT
- Maker Fee: 0.05%
- Taker Fee: 0.05%
- Base Initial Margin: 3.00%
- Base Maintenance Margin: 1.50%
You will be able to trade the AUSD perpetual contract here, or refer to the full contract specs here.
AUSDT Contract Specs
AUSDT is a linear perpetual swap, margined in USDT. This allows users to gain exposure to the price of the A token and trade it with leverage, without needing to have any Vaulta holdings.
Key contract details for our AUSDT listing:
- Symbol: AUSDT
- Margin Currency: USDT
- Contract Size: 0.01 A
- Lot Size: 100
- Minimum Trade Amount: 1 A
- Underlying: .BAT
- Max Leverage: 33.3x
- Maker Fee: 0.05%
- Taker Fee: 0.05%
- Base Initial Margin: 3.00%
- Base Maintenance Margin: 1.50%
You will be able to trade the AUSDT perpetual contract here, or refer to the full contract specs here.
About A, the Vaulta Token
Vaulta is a rebrand of the EOS Network.
Vaulta is a Web3 banking network designed to power the next generation of decentralized financial services. Built on one of the most reliable Layer 1 infrastructures in the industry, Vaulta combines real-time performance with institutional-grade features to deliver secure, scalable, and composable applications—from consumer payments to Bitcoin-native yield and tokenized assets.
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