> For the complete documentation index, see [llms.txt](https://docs.asterdex.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.asterdex.com/trading/perpetuals/single-asset-mode-and-multi-asset-mode.md). # Single-Asset Mode & Multi-Asset Mode Aster Perps offers two collateral modes to support different trading strategies. #### **Single-Asset Mode** * **Collateral:** USDT and USD1. * **Margin allocation:** Managed separately for each position. * **Risk management:** Each position is isolated — losses in one do not affect others. * **PnL:** Calculated individually per position. #### **Multi-Asset Mode** * **Collateral:** Supports a variety of cryptocurrencies, including restaked tokens. * **Margin allocation:** Shared across all open positions, enabling more capital-efficient trading. * **Risk management:** Risk is evaluated across your entire portfolio, not position by position. * **PnL:** Gains and losses are netted across all open positions. * **Efficient capital allocation:** Your margin is shared across positions, so you can use it more flexibly. * **Profitable offset:** Gains from winning positions can offset losses from others in real time. * **Simplified monitoring:** Your margin balance reflects net PnL, giving a clear view of your overall exposure. ### **Collateral Value Ratios** Aster offers two collateral modes to support different trading strategies. ### **Single-Asset Mode** * **Collateral:** USDT and USD1. * **Margin allocation:** Managed separately for each position. * **Risk management:** Each position is isolated – losses in one do not affect others. * **PnL:** Calculated individually per position. ### **Multi-Asset Mode** * **Collateral:** Supports a variety of cryptocurrencies, including restaked tokens. * **Margin allocation:** Shared across all open positions, enabling more capital-efficient trading. * **Risk management:** Risk is evaluated across your entire portfolio, not position by position. * **PnL:** Gains and losses are netted across all open positions. * **Auto-exchange:** Under Multi-Assets Mode, the following three situations will trigger automatic exchange: 1. 1\. When the asset account balance is less than the established automatic exchange threshold ( **-10,000 USD**). 2. 2\. When you encounter forced liquidation, if the USDT balance in the futures account is insufficient to make up for losses, the system will trigger the automatic exchange immediately. 3. 3\. If you do not currently hold a position or have no order, the system will continue to calculate the loan-to-value ratio ( **LTV**). When the loan-to-value ratio (LTV) is greater than or equal to 0.995, the system will trigger automatic exchange. 4. *For example:* When the balance is **-10,000 USDT**, an automatic exchange will be triggered. `10,000 USDT / 97.5% = BTC equivalent to 10,256 USDT` will be automatically converted into USDT into the wallet balance. 5. There is the auto-exchange haircut, for more details, please refer to [trading rule](https://www.asterdex.com/en/futures/trading-rules/multi-assets-info). When automatic exchange is triggered, if there are multiple assets in the futures account, the system will automatically exchange these assets into negative balance assets according to their respective proportions. To prevent automatic exchange, users can actively exchange negative balance assets before the account balance reaches the automatic exchange threshold.
**Note:** Multi-Asset Mode operates in cross margin only. #### **Key Benefits of Multi-Asset Mode** * **Efficient capital allocation:** Your margin is shared across positions, so you can use it more flexibly. * **Profitable offset:** Gains from winning positions can offset losses from others in real time. **Simplified monitoring:** Your margin balance reflects net PnL, giving a clear view of your overall exposure. ### Interest rate Starting **April 9, 2026 10:00 UTC**, interest rates will apply to negative balances under Multi-Asset Mode. Under Multi-Asset Mode, users may carry a negative balance in assets such as **USDT and USD1**. A free threshold of **–1,000 USD** applies(**USDT \&USD1 will be calculated independently**): no interest is charged as long as your negative balance stays within it. Once your negative balance exceeds –1,000 USD, interest accrues hourly on the portion beyond the threshold: Interest fee (hourly) = Hourly rate × (|Negative balance| − 1,000) For example: if your balance is –2,000 USDT at a rate of **0.000457%/hr**, the hourly charge is 0.000457% × (2,000 − 1,000) = 0.00457 USDT.\ \ **Current annualized rate:** 4% **Since interest affects your margin balance, please monitor your risk level closely.** ### **Collateral Value Ratios** Each supported asset has a collateral value ratio that determines how much of its value counts toward your usable margin. Assets with higher risk or volatility receive a larger discount. Each supported asset has a collateral value ratio that determines how much of its value counts toward your usable margin. Assets with higher risk or volatility receive a larger discount. **Aster Perps (BNB Chain):** | Asset | Collateral value ratio | | -------- | ---------------------- | | SlisBNB | 90% | | LisUSD | 90% | | BTC | 95% | | ETH | 95% | | USDT | 99.99% | | WBETH | 90% | | BNB | 95% | | Stone | 90% | | LISTA | 10% | | USD1 | 99% | | USDF | 99.99% | | Cake | 30% | | asBNB | 95% | | BonusUSD | 99.99% | | TWT | 10% | | ASTER | 80% | | TSLAB | 90% | | CRCLB | 90% | | SNDKB | 90% | | NVDAB | 90% | **Aster Perps (Ethereum)：** | Asset | Collateral value ratio | | ----- | ---------------------- | | BTC | 95% | | ETH | 95% | | USDT | 99.99% | | USD1 | 99% | | RSETH | 90% | | USDC | 99.99% | **Aster Perps (Arbitrum)：** | Asset | Collateral value ratio | | ------ | ---------------------- | | USDT | 99.99% | | ETH | 95% | | USDC | 99.99% | | USDC.e | 99.99% | **Aster Perps (Solana)：** | Asset | Collateral value ratio | | ----- | ---------------------- | | USDT | 99.99% | | ETH | 95% | | USDC | 99.99% | | JLP | 90% | | SOL | 90% |