Stock Perpetual contracts

Aster Pro Mode now supports stock perpetuals — enabling perpetual futures trading for U.S. stocks, fully settled in USDT. Trade with up to 50x leverage, long or short, and choose your leverage level when placing an order.

The first stock listing is AAPL/USDT, offering a seamless, on-chain alternative for global traders to access equity markets with high flexibility and control.

USDT-margined stock perpetual contract specifications

• Max leverage: 50x

• Notional cap: 1,000,000 USDT

• Maintenance margin rate: 25%

• Initial margin rate: 50%

• Settlement asset: USDT

• Index price: Based on Pyth Oracle and other trusted sources

• Taker fee: 0.4%

• Maker fee: 0.1%

• Funding fee: Charged every 8 hours between long and short positions. Timing may adjust based on market conditions. Learn more about funding rates

Tier fee structure for Stock markets

VIP Tiers
Tier	14 Days Volume (USD)	Stock Taker Fee (bps)	Stock Maker Fee (bps)
VIP 1	< 5M	4.0	1
VIP 2	>= $5M	3.8	0.8
VIP 3	>= $25M	3.6	0.6
VIP 4	>= $100M	3.4	0.4
VIP 5	>= $500M	3.2	0.2
VIP 6	>= $1B	3.0	0

Stock Market Maker	Stock Maker Fee Rebate (bps)
MM 1	>= $100M or Maker Vol >= 0.5%	3.4	-0.1

Trading Session

Session	Limit Order Price Cap	Market Order Price Cap
Pre market （off hrs） 4am~9:30am	> 2% more aggressive than MarkPrice will be rejected	Can fill up to 2% more aggressive than MarkPrice, the rest will be canceled
Market open 9:30~4pm	the same as crypto perpetual trading pairs	the same as crypto perpetual trading pairs
Post Market（off hrs） 4pm~8pm	> 2% more aggressive than MarkPrice will be rejected	Can fill up to 2% more aggressive than MarkPrice, the rest will be canceled
Market Close（off hrs） 8pm~4am	> 2% more aggressive than MarkPrice will be rejected	Can fill up to 2% more aggressive than MarkPrice, the rest will be canceled

For more trading rules and limitations, please refer to the link.

Notes

Regarding trading parameter adjustments: To mitigate market risks and enhance user experience, Aster may adjust trading parameters such as funding rates, minimum price increments, maximum leverage, risk limits, and maintenance margin requirements in accordance with real-time market conditions.