Outage in OpenGamma
CME CORE Margin API issues impacting cross margin optimisation services
Resolved Minor
August 12, 2026 - Started 1 day ago
- Lasted about 3 hours
Incident Report
Status: We have identified an issue with the CME CORE Margin API and we are urgently working on identifying the root cause. We will keep this page updated.
Problem/Impact: We query the CME CORE Margin API directly for our cross margin optimisation, used across What If Trades, Rebalance, and CME optimisation reporting. We are receiving back bad requests, resulting in no cross margin optimisation at this time.
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Latest Updates ( sorted recent to last )
INVESTIGATING
1 day ago - at 08/12/2026 08:53AM
Status: We have identified an issue with the CME CORE Margin API and we are urgently working on identifying the root cause. We will keep this page updated.
Problem/Impact: We query the CME CORE Margin API directly for our cross margin optimisation, used across What If Trades, Rebalance, and CME optimisation reporting. We are receiving back bad requests, resulting in no cross margin optimisation at this time.
Update: CME have published a circular confirming they are aware of an outage impacting their CME CORE API service and they are investigating.
INVESTIGATING
1 day ago - at 08/12/2026 07:49AM
Status: We have identified an issue with the CME CORE Margin API and we are urgently working on identifying the root cause. We will keep this page updated.
Problem/Impact: We query the CME CORE Margin API directly for our cross margin optimisation, used across What If Trades, Rebalance, and CME optimisation reporting. We are receiving back bad requests, resulting in no cross margin optimisation at this time.
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