Citation

83 FR 17467

Canonical document for this Federal Register citation.

Self-Regulatory Organizations; Investors Exchange LLC; Notice of Filing and Immediate Effectiveness of Proposed Rule Change To Amend Rule 11.190(g) To Incrementally Optimize and Enhance the Effectiveness of the Quote Instability Calculation in Determining Whether a Crumbling Quote Exists Thursday, April 19, 2018 83 FR 17467