Aster

Aster is a perpetuals exchange built around yield-bearing margin

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Aster is a decentralized exchange for leveraged contracts without expiry, called perpetuals, and assets that keep earning while posted as margin. Its order-book markets combine spot trading, cross-margin portfolio accounting and yield-bearing collateral such as USDF and asBNB. Active traders gain capital efficiency because collateral supports positions without becoming idle. That benefit carries linked exposures: funding, collateral haircuts and losses elsewhere in a multi-asset account all change the margin available to keep a position open.

Table of contents
It is a decentralized exchange for spot and perpetual markets, best suited to active traders seeking yield-bearing collateral, while multi-asset margin shares risk across positions.

From wallet funding to a closed perpetual position

The Aster trading workflow moves through network selection, account funding, margin choice, order execution, position verification and a deliberate close or withdrawal.

Begin on one of four Pro networks: BNB Chain, Ethereum, Solana and Arbitrum. Connect Rabby, MetaMask, Binance Wallet or a WalletConnect-compatible wallet, then sign the login message. A BNB Chain connection requires at least 0.001 BNB in the wallet. Deposit an asset supported on the selected network and wait for the Portfolio balance. Single-asset mode uses USDT with position-separated margin, while multi-asset mode shares collateral and profit or loss across the account. Initial margin equals notional exposure divided by leverage; open loss and fees increase the requirement.

Choose a market order for immediate execution or a limit order for price control. After a fill, confirm the average entry, size, mark price and liquidation price. Take-profit and stop-loss orders define planned exits, while reduce-only keeps an exit from increasing exposure. Close until position size reaches zero. Rebalance any negative collateral balance before withdrawing and match the network and asset to the receiving wallet.

Fees arrive before yield in the return calculation

Aster charges by executed notional value, so leverage reduces the collateral posted but never shrinks the trading fee attached to the full position. For USDT perpetuals, the base maker rate is 0% and the taker rate is 0.04%, while USD1 maker and taker rates are 0% and 0.005%. Paying fees with ASTER reduces the applicable charge by 5%. Spot and perpetual VIP status uses rolling 14-day volume plus ASTER holdings across six tiers, so order type and account status set the final trading charge.


Yield-bearing collateral and the margin haircut

Yield-bearing collateral improves Aster’s capital efficiency by letting supported assets accrue value while their discounted balances also contribute to perpetual margin requirements.

USDF starts with a 1:1 mint against Tether’s USDT. Its backing enters a managed flow through Ceffu, then supports a delta-neutral combination of spot assets and short perpetuals on Binance. Staking USDF mints asUSDF, whose net asset value reflects strategy returns, while Pro accepts USDF directly as margin. Aster’s redemption path charges 0.1% on direct conversion back to USDT. The live yield changes with strategy performance, funding income and distributed trading rewards. That structure keeps margin utility, stablecoin backing and asUSDF yield in distinct accounting layers for the trader.

asBNB follows a separate mechanism. BNB or Lista DAO’s slisBNB mints the liquid staking asset, and ecosystem rewards increase its net asset value. Deposited asBNB continues participating in those reward mechanics while supporting Pro margin. Withdrawal returns slisBNB even when the original mint used BNB, which makes the exit asset an operational consideration.

The collateral value ratio converts a token’s reference value into usable margin. On BNB Chain, the schedule counts USDF at 99.99%, asBNB at 95% and ASTER at 80%. LISTA and TWT each count at 10%, while BNB, BTC and ETH each count at 95%. The larger the haircut, the less account equity that asset contributes at the same reference value.

Capital efficiency improves when retained yield exceeds redemption costs, funding transfers and trading fees without consuming the margin buffer. A lower collateral ratio changes that equation before market direction enters it, so asset selection matters as much as nominal account value, which is discussed in Aster questions.


Cross margin turns portfolio efficiency into shared exposure

Cross margin lets profitable Aster positions support losing ones, but every open trade and collateral balance contributes to the same liquidation boundary, as described in Aster inside security steps.

Liquidation uses the mark price rather than the last trade alone. Aster selects its mark price as the median of three inputs: a funding-adjusted index, a five-minute basis average and the contract price. The basis average samples once per minute, while the default funding interval spans eight hours. Funding collection has a 15-second timing deviation around the scheduled point. When one index source moves more than 5% from the source median, its weight becomes zero for that calculation. Traders therefore monitor both the funding countdown and every collateral asset that feeds account equity.

A risk ratio of 100% reaches the liquidation threshold, while the operating guidance keeps it below 80%. The sequence cancels open orders, submits one Immediate-or-Cancel close and rechecks maintenance margin before any remaining position moves to the insurance process. Automatic settlement for a negative USDT perpetual balance applies only at 5,000 USDT or less and requires no open positions or later offsetting deposit. Lower leverage and isolated margin change that boundary most directly.

Stage 6 Convergence text beside golden coin
Stage 6 Convergence text beside golden coin

Trading modes divide speed, control and privacy

Where it matters, Aster offers four trading paths that separate order-book control, simplified execution, onchain liquidity and direct ownership of spot assets across distinct interfaces. Pro supplies chart-based execution, hidden orders, grid trading, post-only controls and reduce-only exits. Shield Mode uses an automated market maker style with built-in order and position privacy. The 1001x interface provides one-click, maximal extractable value (MEV)-resistant perpetuals backed by onchain liquidity, while Spot exchanges assets directly. Aster Chain adds a privacy-focused Layer 1, yet product and collateral support decide the usable path.


Is Aster the right venue for your trading style?

Yield-aware active traders fit Aster when order-book control justifies shared-margin accounting, periodic funding and asset-specific haircuts across one portfolio of open positions.

Venue choice turns on execution architecture. Hyperliquid and dYdX Chain use central limit order books on their own networks, making them closer comparisons for active order placement. GMX routes perpetual trades against GM market pools and GMX Liquidity Vault (GLV) pools on Arbitrum, Avalanche and MegaETH, while Jupiter Perpetuals uses the Jupiter Liquidity Provider (JLP) pool on Solana. Aster stands apart when USDF or asBNB needs to remain productive as margin, although depth, spread and funding still require a market-by-market check.

The selection becomes clearer after separating yield from trading profit. Compare the expected collateral return with taker fees, funding transfers, spread and the liquidation buffer consumed by leverage. Then compare execution style: Aster and Hyperliquid emphasize order books, dYdX Chain emphasizes a decentralized application chain and GMX or Jupiter emphasize pool-backed liquidity. Aster earns its place when productive collateral and Pro controls matter together, while another venue wins when a different network or liquidity model matches the trade.

Aster: common questions

Can I trade on Aster without holding ASTER?

Yes, Aster does not require ASTER as trading collateral or an access token for standard spot and perpetual orders. A supported deposit asset funds the relevant account. Holding ASTER becomes relevant when a trader elects to pay fees with it for the published 5% discount or seeks VIP qualification, staking participation or governance utility. Collateral availability still follows the selected network and margin mode.

Does Aster support automated trading through an API?

Yes, Aster Pro provides an authenticated application programming interface for Representational State Transfer endpoints and WebSocket streams covering market data, orders, account updates and position management. Signed requests use a Hash-based Message Authentication Code with the 256-bit Secure Hash Algorithm. A WebSocket connection lasts 24 hours, receives a server ping every five minutes and supports up to 200 streams. Permission scoping and Internet Protocol allowlisting separate read access from trading access.

Can one Aster account hold long and short positions at the same time?

Yes, Aster Pro’s Hedge Mode holds a long and a short under the same perpetual contract. One-Way Mode permits only one net direction for that contract. The account must clear all open positions and open orders before changing position mode. In cross margin, opposing positions share one liquidation price; isolated margin calculates a separate liquidation price for each side because each position carries its own allocated margin.

Does an Aster limit order guarantee a fill?

No, an Aster limit order executes only when matching liquidity reaches its price and quantity conditions. Good Till Cancelled leaves the order open, Immediate or Cancel fills available size and cancels the remainder and Fill or Kill requires the entire quantity immediately. A post-only order is rejected when it would cross the book at once. Market movement and available depth therefore decide whether any limit order completes.

Which token standard does ASTER use?

ASTER uses the BEP-20 token format on BNB Chain and has a maximum supply of 8,000,000,000 tokens. The asset supports fee payment, staking and governance functions within the broader ecosystem. Token ownership is separate from a trader’s deposited margin unless ASTER appears as an eligible collateral asset in the chosen mode. The token address, network selection and receiving wallet must all match during a transfer.