Regulation & law · 10/07/2026Updated: 10/16/2026 · 1 min read

Miami International Securities Exchange Files Proposed Rule Change to Update Aggregate Risk Manager Rule

The Miami International Securities Exchange (MISE), a self-regulatory organization, has filed a proposed rule change to adopt a new origin multiplier for calculating a market maker's option percentage under Rule 612, Aggregate Risk Manager (ARM). The proposed rule change is effective immediately.