Dear OKX Users,
To support the USD ecosystem and meet diverse trading needs, OKX will add the following USD trading pairs to its spot trading USD zone:
- SOPH/USD
- KMNO/USD
📅 Trading Schedule:
June 18, 2025 (8:00 PM - 8:30 PM UTC+8)
Note: The SOPH/USD pair will only be available in specific regions.
Key Features of the New Listings
Trading Services Availability
- Buy/Sell and Convert functions will activate ~2 hours after USD orderbook launch.
Spot Market Risk Control Rules
Order Restrictions
To protect investors from initial price volatility:
First 5 minutes after trading begins:
- Maximum $10,000 per limit order.
- Restrictions lift automatically after 5 minutes.
Price Limit Mechanisms
1. Closing Price-Based Limits (When Index Price Is Unstable)
| Stage | Buy Order Max Price | Sell Order Min Price |
|---|---|---|
| First minute | Auction price × (1 + H) | No limit |
| Minutes 1–N (pre-index) | Previous close × (1 + H) | No limit |
| Post-N minutes | No limit | No limit |
2. Index-Based Limits (When Index Stabilizes)
| Stage | Buy Order Max Price | Sell Order Min Price |
|---|---|---|
| First 10 minutes | Index × (1 + X) | Index × (1 – X) |
| After 10 minutes | Adjusted dynamic range* | Adjusted dynamic range* |
*Dynamic range incorporates trailing 2-minute premium averages and parameters Y/Z.
🔹 Parameters (N, H, X, Y, Z) may adjust without notice based on market conditions.
👉 Explore real-time rule details
FAQ Section
1. Why is SOPH/USD restricted to certain regions?
Regional availability aligns with compliance requirements and market demand.
2. How are price limits calculated during the first minute?
They derive from the auction's成交价 (closing price) multiplied by (1 + H), where H is a volatility buffer.
3. When do index-based rules take effect?
Once the index price stabilizes, typically within N minutes post-launch.
4. Can I trade immediately after the orderbook opens?
Full trading features activate ~2 hours later to ensure system stability.
5. Where can I check real-time trading rules?
Visit OKX’s official spot market info page.
OKX remains committed to delivering exceptional products and services.
OKX Team
June 13, 2025