Notice Rule

Notice of Filing and Immediate Effectiveness of Proposed Rule Change To Amend Rule 11.190(g) To Modify the Quote Instability Coefficients and Quote Instability Threshold Included in the Quote Instability Calculation Specified in Subparagraph (g)(1) for Purposes of Determining Whether a Crumbling Quote Exists

National Securities Exchanges, Investors Exchange LLC (IEX)

Last Reviewed or Updated: March 10, 2017