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Revision History

Document VersionDateDescription
1.0.003/06/20Initial Version 1.0.0.
1.0.104/15/20
  • Secure Web API will not support the "apply immediately" option for updates to risk limits.
  • Cutoff for the "apply next trading date" option is midnight ET. Example added.
1.1.004/24/20
  • Updated wording users will receive after breaching a risk limit.
  • Added support for setting Risk Group ID limits (effective 5/15/20 for EDGA and 5/22/20 for BZX/BYX/EDGX).
1.1.105/13/20Updated effective dates for support for setting Risk Group ID limits to 5/22/20 for EDGA and 5/29/20 for BZX/BYX/EDGX).
1.1.210/20/20Removed effective notes for released features.
1.1.312/04/20Updated the cutoff time for uploading risk rules.
1.1.412/04/20Updated effective date for early EDGX cutoff time to TBD.
1.1.502/08/21Updated effective date for early EDGX cutoff time to 03/08/21.
1.1.612/09/21Updated copyright information.
1.1.711/09/23Updated copyright information and formatting.
1.1.809/20/24

Updated Overview section to indicate port-level limits will be sunset at a future date.

Added Reject and Cancel and Reject Only risk rule behavior throughout Section 1 and 2.

Added two new Risk Limit Types; Aggregated Gross and Net Credits (effective 01/27/25 on EDGA and effective 02/03/25 on BYX, BZX, and EDGX 11/22/24).

Added two new Risk Limit Breach Behaviors: Reject and Cancel and Reject Only (effective 01/27/25 on EDGA and effective 02/03/25 on BYX, BZX, and EDGX 11/22/24).

Clarified that risk_group_id is used to specify a risk group for a single MPID.

Updated reject value due MPID and Strategy/RiskGroupID level risk limit breach value to f: RiskMgmtFirmLevel.
1.1.911/18/24Updated the effective date of two new Risk Limit Types and two new Risk Limit Breach Behaviors to 01/27/25 on EDGA and effective 02/03/25 on BYX, BZX, and EDGX.
1.1.1001/15/25Updated with Cboe Titanium branding.
1.1.1101/27/25

Updated Risk Limit Breach Behavior to clarify that in order to continue trading after a risk limit breach, a user from either the trading firm or clearing firm must update their defined limit to an amount above their current risk exposure

Clarified that modifications to a subset of rules must also include all existing rules for a particular firm's profile upload.

1.1.1204/17/26
  • Updated Viewing or Changing Risk Rules to indicate that the cutoff for the next trading date is 6:30 a.m. ET for BYX/EDGA and 3:30 a.m. ET for BZX/EDGX.
1.1.1306/30/26Effective 12/07/26, the EDGX cutoff for the next trading date will be 8:30 p.m. ET.
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Cboe Titanium U.S. Equities Risk Management Specification - Revision History | Cboe