Pursuant to Section 19(b)(1) of the Securities Exchange Act of 1934 (“Act”),^[1] and Rule 19b-4 thereunder,^[2] notice is hereby given that on July 30, 2026, 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, II, and III, 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 amend Options 2, Section 5, Market Maker Quotations.

The text of the proposed rule change is available on the Exchange's website at listingcenter.nasdaq.com/​rulebook/​mrx/​rulefilings, and at the principal office of the Exchange.

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

MRX proposes to amend Options 2, Section 5, Market Maker Quotations. Specifically, the Exchange proposes to amend Options 2, Section 5(e), to modify the manner in which quoting ( printed page 52362) obligations are aggregated and counted toward applicable quoting requirements for Primary Market Makers (“PMMs”) ^[3] and Preferred Market Makers ^[4] associated with the same Member. The Exchange proposes this amendment for the following reasons.

First, the Exchange believes that the proposed aggregation of quoting activity for PMMs and Preferred Market Makers is appropriate because these two categories of market participants are subject to materially similar quoting obligations. Both PMMs and Preferred Market Makers are subject to a requirement to provide continuous two-sided quotations in 90% of the cumulative number of seconds during the trading day. Currently, an PMM is required to provide two-sided quotations in 90% of the cumulative number of seconds, or such higher percentage as the Exchange may announce.^[5] This is calculated separately from a Preferred Market Maker's obligation to provide two-sided quotations in 90% of the cumulative number of seconds, or such higher percentage as the Exchange may announce in advance, among all options series in which the Preferred Market Maker has executed a Preferenced Order on a daily basis.^[6]

Second, most PMMs are also Preferred Market Makers in the same options series, such that the functional distinction between these roles, for purposes of assessing compliance with the quoting obligation, is minimal.

Third, the allocation benefits for PMMs and Preferred Market Makers are similar. Specifically, PMMs and Preferred Market Makers each are entitled to preferential participation entitlements ^[7] that are greater than those afforded to ordinary Competitive Market Makers.^[8] Because the Exchange already confers similar economic benefits and preferential treatment on PMMs and Preferred Market Makers under the allocation rules pursuant to Options 3, Section 10 it is consistent and equitable to also treat their quoting activity in an aggregated manner for purposes of assessing compliance with the continuous quoting obligation under Options 2, Section 5.

Fourth, the current requirement that a Member satisfy two separate quoting obligations—one with respect to PMMs and one with respect to Preferred Market Makers—imposes an administrative and operational burden on market participants that does not produce a corresponding benefit to the market. Requiring separate compliance tracking for each role within the same Member results in duplicative monitoring without necessarily encouraging greater or higher-quality quoting activity. The proposed aggregation eliminates this unnecessary burden while preserving the substantive quoting standard to which these participants are held. The Exchange does not believe that eliminating the requirement for separate compliance tracking will diminish the quality or breadth of quotations available to market participants, given that the 90% continuous quoting threshold remains.

Proposal

At this time, MRX proposes to amend Options 2, Section 5(e) which describes the various market making quoting obligations and the requirement to meet each quoting obligation separately. Current Options 2, Section 5(e) states,

Intra-day Quotes. A Market Maker must enter bids and offers for the options to which it is appointed, except in an assigned options series listed intra-day on the Exchange. On a daily basis, a Market Maker must make markets consistent with the applicable quoting requirements specified below. A Member will be required to meet each market making obligation separately. Quotes submitted through the Specialized Quote Feed interface, utilizing badges and options series assigned to a Primary Market Maker, will be counted toward the requirement to provide two-sided quotations in 90% of the cumulative number of seconds, or such higher percentage as MRX may announce. Quotes submitted through the Specialized Quote Feed interface, utilizing badges and options series assigned to a Competitive Market Maker, will be counted toward the requirement to provide two-sided quotations in 60% of the cumulative number of seconds, or such higher percentage as MRX may announce. A Member that is a Competitive Market Maker in an options series where the Member is also assigned as the Primary Market Maker in an options series will be held to both the Primary Market Maker and Competitive Market Maker obligations, pursuant to Options 2, Section 5(e), separately, in that options series. A Market Maker who executes a Preferenced Order, as described in Options 2, Section 10 and Options 3, Section 10 (“Preferred Market Maker”), shall be held to the standard of a Preferred Market Maker among all options series of any options class in which it executes the Preferenced Order.

The Exchange proposes to amend Options 2, Section 5(e) to state instead that,

Intra-day Quotes. A Market Maker must enter bids and offers for the options to which it is appointed, except in an assigned options series listed intra-day on the Exchange. On a daily basis, a Market Maker must make markets consistent with the applicable quoting requirements specified below.

Quotes submitted through the Specialized Quote Feed interface, utilizing badges and options series assigned to a Primary Market Maker and a Competitive Market Maker will be counted toward the requirement to provide two-sided quotations in 90% and 60%, respectively, of the cumulative number of seconds, or such higher percentage as MRX may announce.

A Member that is a Competitive Market Maker in an options series where the Member is also assigned as the Primary Market Maker in an options series will be held to both the Primary Market Maker and Competitive Market Maker obligations, pursuant to Options 2, Section 5(e), separately, in that options series.

A Market Maker who executes a Preferenced Order, as described in Options 2, ( printed page 52363) Section 10 and Options 3, Section 10 (“Preferred Market Maker”), shall be held to the standard of a Preferred Market Maker among all options series of any options class in which it executes the Preferenced Order.

Where a Market Maker is both a Primary Market Maker and a Preferred Market Maker, the Market Maker's quotes in its assigned series submitted through the Specialized Quote Feed interface will count toward its quoting obligations as a Primary Market Maker and as a Preferred Market Maker.

The proposal modifies the methodology by which activity across badges ^[9] and options series assigned within the same Member is aggregated toward satisfying those existing thresholds. With this proposal, no participant is relieved of existing obligations to provide continuous two-sided quotations based on the role, rather the proposal adjusts the measurement for calculating the fulfillment of the PMM and Preferred Market Maker quoting obligations by measuring those obligations on a combined basis rather than in isolation. The proposal does not amend a Competitive Market Maker's quoting obligation to provide two-sided quotations in 60% of the cumulative number of seconds, or such higher percentage as the Exchange may announce.^[10]

Today, a Competitive Market Maker is not subject to the heightened 90% quoting obligation nor is a Competitive Market Maker afforded enhanced allocations similar to an PMM or Preferred Market Maker. With respect to Competitive Market Maker allocations in Options 3, Section 10, these participants have priority over all other orders at the same price after Priority Customers, PMMs and Preferred Market Makers are allocated.

Finally, as is the case today, a Member that is a Competitive Market Maker in an options series where the Member is also assigned as the PMM in an options series will be held to both the PMM and Competitive Market Maker obligations, pursuant to Options 2, Section 5(e), separately, in that options series. Also, as is the case today, a Competitive Market Maker who executes a Preferenced Order shall be held to the standard of a Preferred Market Maker in such option series.^[11] Examples of the proposed change are below.

For purposes of the below examples, the numerator is the total number of seconds the Member disseminates quotes in each assigned options series, (minus exclusions, as applicable) and the denominator is the eligible total number of seconds each assigned option series in the options class is open for trading that day (minus exclusions, as applicable). In each example, the Member's quoting time across all eligible options series for each of the number of symbols would be added up and then divided by the total amount of seconds all those options series across the number of assigned symbols are open for trading on that day.

For the examples below, assume:

Each symbol only has 1 series the Member is required to quote.

Each options series in all symbols is open for every second of the trading day.

Example #1

Firm #1 has 125 symbols

100 symbols are Primary Market Maker (“PMM”)

—25 PMM symbols executed Preferenced Orders ^[12]

25 symbols are CMM

—25 CMM symbols executed Preferenced Orders

Today: 75 symbols are counted toward PMM bucket, 50 symbols are counted toward the Preferenced Order bucket, and 0 symbols are counted toward the CMM bucket.

PMM Bucket = X seconds quoted for all 75 symbols/1,755,000 (23,400 * 75)

Preferenced Order Bucket = X seconds quoted for all 50 symbols/1,170,000 (23,400 * 50)

CMM Bucket = No obligation because the 25 symbols are preferenced

Proposal: 125 symbols are in 90% bucket, 0 symbols are in 60% bucket.

90% Bucket = X seconds quoted for all 125 symbols/2,925,000 (23,400 * 125)

60% Bucket = No obligation for CMM because the 25 symbols have Preferenced Order obligations

Example #2

Firm #1 has 150 symbols

100 symbols are PMM

—25 PMM symbols executed Preferenced Orders

50 symbols are CMM

—25 CMM symbols executed Preferenced Orders

Today: 75 symbols are counted toward PMM bucket, 50 symbols are counted toward the Preferenced Order bucket, and 25 symbols are counted toward the CMM bucket.

PMM Bucket = X seconds quoted for all 75 symbols/1,755,000 (23,400 * 75)

Preferenced Order Bucket = X seconds quoted for all 50 symbols/1,170,000 (23,400 * 50)

CMM Bucket = X seconds quoted for all 25 symbols/585,000 (23,400 * 25)

Proposal: 125 symbols are in 90% bucket, 25 symbols are in 60% bucket.

90% Bucket = X seconds quoted for all 125 symbols/2,925,000 (23,400 * 125)

60% Bucket = X seconds quoted for all 25 symbols/585,000 (23,400 * 25)

Example #3

Firm #1 has 1,000 symbols

400 symbols are PMM

—390 PMM symbols executed Preferenced Orders

600 symbols are CMM

—500 CMM symbols executed Preferenced Orders

Today: 10 symbols are counted toward PMM bucket, 890 symbols are counted toward the Preferenced Order bucket, and 100 symbols are counted toward the CMM bucket.

PMM Bucket = X seconds quoted for all 10 symbols/234,000 (23,400 * 10)

Preferenced Order Bucket = X seconds quoted for all 890 symbols/20,826,000 (23,400 * 890)

CMM Bucket = X seconds quoted for all 100 symbols/2,340,000 (23,400 * 100)

Proposal: 900 symbols are in 90% bucket, 100 symbols are in 60% bucket.

90% Bucket = X seconds quoted for all 900 symbols/21,060,000 (23,400 * 900)

60% Bucket = X seconds quoted for all 100 symbols/2,340,000 (23,400 * 100)

The Exchange believes that this proposal would remove the duplicative compliance burden for PMMs and Preferred Market Makers which currently requires a Member to deploy resources to meet both obligations concurrently without the ability to offset one against the other. The proposed rule change recognizes this substantial overlap by permitting quoting activity across both roles to be counted together when badges and options series are assigned within the same Member.

Implementation

The Exchange proposes to implement the quoting obligations on September 1, 2026. The Exchange would issue an Options Regulatory Alert notifying members of the amended quoting obligations.

2. Statutory Basis

The Exchange believes that its proposal is consistent with Section 6(b) of the Act,^[13] in general, and furthers the objectives of Section 6(b)(5) of the Act,^[14] in particular, in that it is designed to promote just and equitable principles of trade, to remove impediments to and perfect the mechanism of a free and open market and a national market system, and, in general to protect investors and the public interest.

The Exchange's proposal to amend Options 2, Section 5(e), to modify the manner in which quoting obligations are aggregated and counted toward applicable quoting requirements for PMMs and Preferred Market Makers associated with the same Member is consistent with the Act. The Exchange believes that the proposed aggregation of quoting activity for PMMs and Preferred Market Makers promotes just and equitable principles of trade because these two categories of market participants are subject to materially similar quoting obligations. Both PMMs and Preferred Market Makers are subject to a requirement to provide continuous two-sided quotations in 90% of the cumulative number of seconds during the trading day.^[15]

Further, most PMMs are also Preferred Market Makers in the same options series, such that the functional distinction between these roles, for purposes of assessing compliance with the quoting obligation, is minimal. Also, the allocation benefits for PMMs and Preferred Market Makers are similar.^[16] Because the Exchange already confers similar economic benefits and preferential treatment on PMMs and Preferred Market Makers under the allocation rules pursuant to Options 3, Section 10 it is consistent with the Act to also treat their quoting activity in an aggregated manner for purposes of assessing compliance with the continuous quoting obligation under Options 2, Section 5.

The current requirement that a Member satisfy two separate quoting obligations—one with respect to PMMs and one with respect to Preferred Market Makers—imposes an administrative and operational burden on market participants that does not produce a corresponding benefit to the market. Requiring separate compliance tracking for each role within the same Member results in duplicative monitoring without necessarily encouraging greater or higher-quality quoting activity. The proposed aggregation removes impediments to and perfects the mechanism of a free and open market and a national market system because it eliminates this unnecessary burden while preserving the substantive quoting standard to which these participants are held. The Exchange does not believe that eliminating the requirement for separate compliance tracking will diminish the quality or breadth of quotations available to market participants, given that the 90% continuous quoting threshold remains.

Additionally, not amending the quoting obligations for Competitive Market Makers is consistent with the Act because Competitive Market Makers are not subject to the heightened 90% quoting obligation nor are they afforded enhanced allocations similar to an PMM or Preferred Market Maker.

Finally, the Exchange will continue to hold a Competitive Market Maker who is also assigned the PMM in an options series to both the PMM and Competitive Market Maker obligations, pursuant to Options 2, Section 5(e), separately, in that options series. Further, a Market Maker who executes a Preferenced Order will continue to be held to the standard of a Preferred Market Maker.

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

The Exchange does not believe that the proposed rule change will impose any burden on competition not necessary or appropriate in furtherance of the purposes of the Act.

The Exchange's proposal to amend Options 2, Section 5(e), to modify the manner in which quoting obligations are aggregated and counted toward applicable quoting requirements for PMMs and Preferred Market Makers associated with the same Member does not impose an undue burden on intra-market competition because all Preferred Market Makers and PMMs would continue to be required to quote in their assigned options series. Further, the manner in which quoting obligations are aggregated and counted would apply uniformly to all Preferred Market Makers and PMMs.

Not amending the quoting obligations for Competitive Market Makers does not impose an undue burden on intra-market competition because Competitive Market Makers are not subject to the heightened 90% quoting obligation similar to an PMM or Preferred Market Maker and are not afforded enhanced allocations that are afforded to an PMM or Preferred Market Maker.

The Exchange's proposal to amend Options 2, Section 5(e), to modify the manner in which quoting obligations are aggregated and counted toward applicable quoting requirements for PMMs and Preferred Market Makers associated with the same Member does not impose an undue burden on inter-market competition because other options exchanges could adopt a similar rule.

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 foregoing 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 19(b)(3)(A)(iii) of the Act ^[17] and subparagraph (f)(6) of Rule 19b-4 thereunder.^[18]

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 (www.sec.gov/​rules/​sro.shtml); or
• Send an email torule-comments@sec.gov. Please include file number SR-MRX-2026-33 on the subject line.

Paper Comments

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

All submissions should refer to file number SR-MRX-2026-33. 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 website ( www.sec.gov/​rules/​sro.shtml). Copies of the filing will be available for inspection and copying at the principal office of the Exchange. Do not include personal identifiable information in submissions; you should submit only information that you wish to make available publicly. We may redact in part or withhold entirely from publication submitted material that is obscene or subject to copyright protection. All submissions should refer to file number SR-MRX-2026-33 and should be submitted on or before September 3, 2026.