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###### Securities and Exchange Commission

          - [Release No. 34-81597; File No. SR-MRX-2017-17]

                    Pursuant to Section 19(b)(1) of the Securities Exchange Act of 1934 (the “Act”),[1]                                          and Rule 19b-4 thereunder,[2]                                          notice is hereby given that on August 31, 2017, Nasdaq MRX, LLC (“MRX” or “Exchange”) filed with the Securities and Exchange Commission (“SEC” or “Commission”) the proposed rule change as described in Items I and II below, which Items have been prepared by the Exchange. The Commission is publishing this notice to solicit comments on the proposed rule change from interested persons.                

## I. Self-Regulatory Organization's Statement of the Terms of Substance of the Proposed Rule Change

The Exchange proposes to remove language from Chapter 19 related to a systems issue that has been resolved with the completed migration of the Exchange to Nasdaq INET.

                    The text of the proposed rule change is available on the Exchange's Web site at                     *www.ise.com,*                     at the principal office of the Exchange, and at the Commission's Public Reference Room.                

## II. Self-Regulatory Organization's Statement of the Purpose of, and Statutory Basis for, the Proposed Rule Change

In its filing with the Commission, the Exchange included statements concerning the purpose of and basis for the proposed rule change and discussed any comments it received on the proposed rule change. The text of these statements may be examined at the places specified in Item IV below. The Exchange has prepared summaries, set forth in sections A, B, and C below, of the most significant aspects of such statements.

### A. Self-Regulatory Organization's Statement of the Purpose of, and Statutory Basis for, the Proposed Rule Change

#### 1. Purpose

                    The purpose of the proposed rule change is to remove language from Chapter 19 related to a systems issue that has been resolved with the completed migration of the Exchange to Nasdaq INET. On June 6, 2017, the Exchange filed a proposed rule change to amend Chapter 19 to notify members of a systems issue related to allocations made pursuant to Supplementary Material .02(a)-(b) to Rule 1901 (“Flash auction”).[3]                                          As explained in that proposed rule change, due to a systems issue, Flash auction allocations pursuant to Supplementary Material .02(a)-(b) to Rule 1901 were not being provided as described in that rule, and instead Primary Market Maker quotes were being given a Flash auction allocation pursuant to Supplementary Material .01(b)-(c) to Rule 713 after Priority Customer Orders on the book, and ahead of Responses, Professional Orders, and other market maker quotes. This systems issue has been resolved with the Exchange's migration to Nasdaq INET, which was completed on Monday, August 21, 2017. As all symbols are now trading on INET, contracts executed in a Flash auction will be allocated correctly pursuant to Supplementary Material .02 to Rule 1901. The Exchange therefore proposes to remove the language described above from its rulebook.                

#### 2. Statutory Basis

                    The Exchange believes that the proposed rule change is consistent with the requirements of the Act and the rules and regulations thereunder that are applicable to a national securities exchange, and, in particular, with the requirements of Section 6(b) of the Act.[4]                                          In particular, the proposal is consistent with Section 6(b)(5) of the Act,[5]                                          because is designed to promote just and equitable principles of trade, remove impediments to and perfect the mechanisms of a free and open market and a national market system and, in general, to protect investors and the public interest. The Exchange believes that the proposed rule change is consistent with the protection of investors and the public interest because the systems issue described in Chapter 19 has been resolved. Due to a systems issue, allocations in the Flash auction were not being done in the manner described in Supplementary Material .02(a)-(b) to Rule 1901. As a temporary measure, the Exchange therefore added language to that effect to Chapter 19. With the migration of the Exchange's trading system to Nasdaq INET, this systems issue has been eliminated, and the Exchange therefore believes that it is appropriate to remove this language from Chapter 19.                

### B. Self-Regulatory Organization's Statement on Burden on Competition

                    In accordance with Section 6(b)(8) of the Act,[6]                                          the Exchange does not believe that the proposed rule change will impose any burden on intermarket or intramarket competition that is not necessary or appropriate in furtherance of the purposes of the Act. The proposed rule change eliminates outdated text reflecting a systems issue related to Flash auction allocations, and is not designed to have any competitive impact.                

### C. Self-Regulatory Organization's Statement on Comments on the Proposed Rule Change Received From Members, Participants, or Others

No written comments were either solicited or received.

## III. Date of Effectiveness of the Proposed Rule Change and Timing for Commission Action

                    Because the proposed rule change does not (i) significantly affect the protection of investors or the public interest; (ii) impose any significant burden on competition; and (iii) become operative for 30 days from the date on which it was filed, or such shorter time as the Commission may designate, it has become effective pursuant to Section                           ( print page 43598)                        19(b)(3)(A) of the Act [7]                                          and Rule 19b-4(f)(6) thereunder.[8] 

                    A proposed rule change filed pursuant to Rule 19b-4(f)(6) under the Act [9]                                          normally does not become operative for 30 days after the date of its filing. However, Rule 19b-4(f)(6)(iii) [10]                                          permits the Commission to designate a shorter time if such action is consistent with the protection of investors and the public interest. The Exchange has asked the Commission to waive the 30-day operative delay. The Exchange states that waiver of the operative delay is consistent with the protection of investors and the public interest as it will allow the Exchange to immediately remove outdated language from Chapter 19 and thereby avoid member confusion about how Flash auction allocations are performed on the Exchange. The Commission believes the waiver of the operative delay is consistent with the protection of investors and the public interest. Accordingly, the Commission hereby waives the operative delay and designates the proposed rule change operative upon filing.[11] 

At any time within 60 days of the filing of the proposed rule change, the Commission summarily may temporarily suspend such rule change if it appears to the Commission that such action is necessary or appropriate in the public interest, for the protection of investors, or otherwise in furtherance of the purposes of the Act. If the Commission takes such action, the Commission shall institute proceedings to determine whether the proposed rule should be approved or disapproved.

## IV. Solicitation of Comments

Interested persons are invited to submit written data, views, and arguments concerning the foregoing, including whether the proposed rule change is consistent with the Act. Comments may be submitted by any of the following methods:

### Electronic Comments

    - Use the Commission's Internet comment form ( http://www.sec.gov/​rules/​sro.shtml ); or                
    - Send an email to rule-comments@sec.gov.                      Please include File Number SR-MRX-2017-17 on the subject line.                

### Paper Comments

    - Send paper comments in triplicate to Brent J. Fields, Secretary, Securities and Exchange Commission, 100 F Street NE., Washington, DC 20549-1090.

                    All submissions should refer to File Number SR-MRX-2017-17. This file number should be included on the subject line if email is used. To help the Commission process and review your comments more efficiently, please use only one method. The Commission will post all comments on the Commission's Internet Web site (                    *http://www.sec.gov/​rules/​sro.shtml*). Copies of the submission, all subsequent amendments, all written statements with respect to the proposed rule change that are filed with the Commission, and all written communications relating to the proposed rule change between the Commission and any person, other than those that may be withheld from the public in accordance with the provisions of 5 U.S.C. 552, will be available for Web site viewing and printing in the Commission's Public Reference Room, 100 F Street NE., Washington, DC 20549 on official business days between the hours of 10:00 a.m. and 3:00 p.m. Copies of such filing also will be available for inspection and copying at the principal office of the Exchange. All comments received will be posted without change; the Commission does not edit personal identifying information from submissions. You should submit only information that you wish to make available publicly. All submissions should refer to File Number SR-MRX-2017-17, and should be submitted on or before October 10, 2017.                

                        For the Commission, by the Division of Trading and Markets, pursuant to delegated authority.[12] 

Eduardo A. Aleman,

Assistant Secretary.

# Footnotes

1.                             15 U.S.C. 78s(b)(1).                    
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2.                             17 CFR 240.19b-4.                    
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3.                                                     *See*                         Securities Exchange Act Release No. 80965 (June 19, 2017), 82 FR 28716 (June 23, 2017) (SR-MRX-2017-07).                    
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4.                             15 U.S.C. 78f(b).                    
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5.                             15 U.S.C. 78f(b)(5).                    
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6.                             15 U.S.C. 78f(b)(8).                    
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7.                             15 U.S.C. 78s(b)(3)(A).                    
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8.                             17 CFR 240.19b-4(f)(6). As required under Rule 19b-4(f)(6)(iii), the Exchange provided the Commission with written notice of its intent to file the proposed rule change, along with a brief description and the text of the proposed rule change, at least five business days prior to the date of filing of the proposed rule change, or such shorter time as designated by the Commission.                    
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9.                             17 CFR 240.19b-4(f)(6).                    
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10.                             17 CFR 240.19b-4(f)(6)(iii).                    
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11.                             For purposes only of waiving the 30-day operative delay, the Commission has also considered the proposed rule's impact on efficiency, competition, and capital formation.                         *See*15 U.S.C. 78c(f).                    
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12.                                 17 CFR 200.30-3(a)(12).                        
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[FR Doc. 2017-19806 Filed 9-15-17; 8:45 am]

 BILLING CODE 8011-01-P