Tonight many users are searching for what time are the ACMS on, especially during peak trading windows. This article explains the key session times, market windows, and system checks you need to plan around.
ACMS schedules can shift with market holidays and maintenance, so relying on standard patterns helps you avoid missed executions. The following sections outline today’s specific timings and related operational details.
| Session | Local Market Time | UTC Offset | Status |
|---|---|---|---|
| Pre-Open | 11:30 | UTC-5 | Scheduled |
| Open | 13:30 | UTC-5 | Live |
| Midday Fix | 15:00 | UTC-5 | Scheduled |
| Close | 16:00 | UTC-5 | Scheduled |
| Post-Close Checks | 16:15–16:45 | UTC-5 | Planned |
Intraday Trading Windows
Session Timing Overview
ACMS intraday sessions follow exchange-defined market hours with fixed buffers for order entry, matching, and settlement. Pre-Open allows positioning before the official open, while Post-Close supports risk checks and audit trails.
Market Holidays and Exceptions
Calendar-Driven Schedule Changes
On market holidays, ACMS either shortens the session or suspends trading entirely. The platform updates its session grid in advance and sends alerts when a scheduled session is canceled or moved.
Operational Checks Tonight
System Status Before Execution
Before tonight’s session, operations teams verify matching engines, market data feeds, and settlement links. A green status across these components ensures that orders submitted at the scheduled times will be processed without interruption.
Key Takeaways
- Confirm session times against the latest exchange calendar to account for holidays.
- Monitor system status alerts before entering orders in Pre-Open and Open windows.
- Use the Midday Fix timestamp for real-time risk reviews and portfolio valuations.
- Leverage Post-Close Checks for settlement verification and next-day preparation.
FAQ
Reader questions
What time does the ACMS Pre-Open session start tonight?
The Pre-Open session starts at 11:30 local market time, which corresponds to 16:30 UTC, subject to any announced holiday changes.
Is the ACMS Open session currently live tonight?
Yes, the Open session is live at 13:30 local market time, and the system is confirming matches in real time for today’s trades.
When does the ACMS Midday Fix occur during today’s schedule?
The Midday Fix is scheduled for 15:00 local market time, providing a timestamp used for valuation and risk monitoring.
What happens during Post-Close Checks after the ACMS Close?
Post-Close Checks from 16:15 to 16:45 allow the system to reconcile trades, generate confirmations, and complete overnight risk tests before the next session.