Dear OSL Users,

To further enhance platform stability and improve the trading experience, OSL is excited to announce the upgrade of our Pro Trade system. We will be transitioning our entire spot trading infrastructure to a next-generation core trading architecture.

1. Key Enhancements

Brand-New Trading Interface

We are introducing a modern, industry-proven trading experience. Users can expect faster interface responsiveness, a more professional and intuitive layout, and a seamless experience when tracking order history and transactions.

24/7 Trading Engine Availability

The daily scheduled maintenance window (07:00 – 07:30 UTC+8) will be permanently removed. The OSL HK Pro Trade order book will transition to continuous 24/7/365 matching, ensuring uninterrupted trading and real-time execution across any market conditions.

2. Upgrade Schedule

• Target date: July 2026 (The exact upgrade date will be announced at least 48 hours in advance)

• Maintenance window: 07:00–09:00 (UTC+8) (The maintenance period may be shortened or extended based on actual upgrade progress)

• Affected services: Pro Trade (Including order placement, order cancellation, order history inquiries, and internal transfers)

• Unaffected services: Funding Account and Flash Trade Account balance inquiries, deposits, withdrawals, and API services

3. Important Information

• Service availability during the maintenance window:

  • Unavailable Services:

    • Order placement, order cancellation, and order history inquiries on Pro Trade.

    • Transfers between Funding Account and Pro Trade Account.

  • Unaffected Services:

    • Deposits, withdrawals, and balance inquiries within Funding Account will remain available.

    • Other API services will be unaffected.

• Open Order Handling:

  • At the start of the maintenance window, the system will automatically cancel all open (unfilled and partially filled) orders. Any reserved assets will be released and returned to your respective account balances.

• API / FIX Connections:

  • During the maintenance window, Pro Trade-related API and FIX endpoints will return a "Service Unavailable" response.

  • Once the maintenance has been successfully completed, no further API or FIX system integration will be required on the client's end. Order placement can resume normally via your current connections. For more technical details, please refer to Spot Upgrade - FIX and API updates, or contact your Relationship Manager.

4. Customer Support

If you have any questions or require assistance, please reach out via the following channels:

• General Inquiries: Email us at [email protected] or contact our Live Chat Support through the platform.

• API & Technical Support: [email protected]

• Dedicated Relationship Managers: If you already have a dedicated relationship manager or established support channel, you may continue to use that channel for direct assistance.

Thank you for your continued support and understanding.

Disclaimer

This content is provided by OSL Digital Securities Limited ("OSL HK") solely for the intended recipient and may not be distributed, reproduced, or disclosed without prior written consent. It is for informational purposes only and does not constitute, nor should it be construed as, an offer, solicitation, or recommendation to buy, sell, or subscribe to any securities, financial instruments, products, or services. This content does not constitute legal, tax, accounting, or financial advice. Recipients should seek professional advice before making any decisions.

OSL HK makes no representations or warranties as to the accuracy, completeness, or reliability of the information and accepts no liability for any loss arising from its use. Where third-party data is referenced, OSL HK makes no representation or endorsement regarding such data. All opinions and information are as of the date hereof and may change without notice.