Notice2026-09474

Self-Regulatory Organizations; Cboe BYX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Amend the Exchange's Fee Schedule To Remove Text Capping the Number of Dedicated Cores Available to Market Participants

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Published
May 13, 2026

Issuing agencies

Securities and Exchange Commission

Full Text

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<title>Federal Register, Volume 91 Issue 92 (Wednesday, May 13, 2026)</title>
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[Federal Register Volume 91, Number 92 (Wednesday, May 13, 2026)]
[Notices]
[Pages 27090-27094]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-09474]


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SECURITIES AND EXCHANGE COMMISSION

[Release No. 34-105420; File No. SR-CboeBYX-2026-019]


Self-Regulatory Organizations; Cboe BYX Exchange, Inc.; Notice of 
Filing and Immediate Effectiveness of a Proposed Rule Change To Amend 
the Exchange's Fee Schedule To Remove Text Capping the Number of 
Dedicated Cores Available to Market Participants

May 8, 2026.
    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 May 1, 2026, Cboe BYX Exchange, Inc. (the ``Exchange'' or ``BYX'') 
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.
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    \1\ 15 U.S.C. 78s(b)(1).
    \2\ 17 CFR 240.19b-4.
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I. Self-Regulatory Organization's Statement of the Terms of Substance 
of the Proposed Rule Change

    BYX proposes to amend the Exchange's Fee Schedule to remove text 
capping the number of Dedicated Cores available to market participants. 
The text of the proposed rule change is provided in Exhibit 5.
    The text of the proposed rule change is also available on the 
Commission's website (<a href="https://www.sec.gov/rules/sro.shtml">https://www.sec.gov/rules/sro.shtml</a>), the 
Exchange's website (<a href="https://www.cboe.com/us/equities/regulation/rule_filings/bzx/">https://www.cboe.com/us/equities/regulation/rule_filings/bzx/</a> [sic]), and at the principal office of the Exchange.

[[Page 27091]]

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 Exchange proposes to remove the text that caps the maximum 
number of Dedicated Cores available to Members and Sponsoring Members 
in its Fee Schedule.\3\ Upon effectiveness of this proposal, the 
Exchange will include the same cap on the number of Dedicated Cores in 
the Cboe Titanium Cboe U.S. Equities Binary Order Entry Specification, 
available on its website. The Exchange does not propose to amend the 
fee charged for Dedicated Cores that market participants may 
voluntarily purchase.
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    \3\ The Exchange initially submitted the proposed rule change on 
April 27, 2026 (SR-CboeBYX-2026-016). On May 1, 2026, the Exchange 
withdrew that proposal and submitted this filing.
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    For background, the Exchange launched Dedicated Cores in July 2024 
and, as discussed below, established caps at that time.\4\ The 
Dedicated Core permits users to assign a single Binary Order Entry 
(``BOE'') logical order entry port to a single dedicated Central 
Processing Unit (CPU Core). Historically, CPU Cores had been shared by 
logical order entry ports (i.e., multiple logical ports from multiple 
firms may connect to a single CPU Core). Use of Dedicated Cores 
however, can provide reduced latency, enhanced throughput, and improved 
performance since a firm using a Dedicated Core is utilizing the full 
processing power of a CPU Core instead of sharing that power with other 
firms. This offering is completely voluntary and is available to all 
Users that wish to purchase Dedicated Cores. Users may utilize BOE 
logical order entry ports on shared CPU Cores, either in lieu of, or in 
addition to, their use of Dedicated Core(s). As such, Users are able to 
operate across a mix of shared and dedicated CPU Cores which the 
Exchange believes provides additional risk and capacity management. 
Further, Dedicated Cores are not required nor necessary to participate 
on the Exchange and as such Users may opt not to use Dedicated Cores at 
all.
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    \4\ See Securities Exchange Act Release No. 100476 (July 9, 
2024), 89 FR 57482 (July 15, 2024) (SR-CboeBYX-2024-024).
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    Upon the launch of Dedicated Cores, the Exchange established caps 
of 60 Dedicated Cores for Members and 25 Dedicated Cores for each of 
Sponsored Access Relationship a Sponsoring firm has.\5\ On October 1, 
2024, the Exchange proposed to increase this cap for Members from 60 up 
to 80 Dedicated Cores and from 25 Dedicated Cores to 35 Dedicated Cores 
for each Sponsored Access Relationship a Sponsoring firm has.\6\ The 
Exchange last amended the cap for Members on December 1, 2024 \7\ to 
the levels it is at today, which permits market participants to 
purchase up to 120 Dedicated Cores for Members and up to 35 Dedicated 
Cores for each Sponsored Access relationship a Sponsoring Firm has (the 
Exchange did not modify the Sponsored Access cap in December). The 
Exchange noted previously that it would continue monitoring Dedicated 
Core interest by all Users and allotment availability with the goal of 
increasing these limits to meet Users' needs if and when the demand is 
there and/or the Exchange is able to accommodate additional Dedicated 
Cores.
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    \5\ Id.
    \6\ See Securities Exchange Act Release No. 101303 (October 10, 
2024), 89 FR 83740 (October 17, 2024) (SR-CboeBYX-2024-036).
    \7\ See Securities Exchange Act Release No. 101827 (December 11, 
2024), 89 FR 99945 (December 5, 2024) (SR-CboeBYX-2024-047).
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    The Exchange now proposes to amend its Fee Schedule to remove 
language that caps the maximum number Dedicated Cores available to 
participants. This change will bring the Exchange's Fee Schedule in 
line with other exchanges who impose caps, whether on ports or on other 
connectivity offerings, and do not specify these caps in their 
respective fee schedules.
    MIAX Emerald, LLC, (``MIAX Emerald'') recently removed the cap in 
its fee schedule regarding the number of Limited Service MEI Ports and 
moved this into the spec.\8\ MIAX Emerald notes that such a change 
aligns with its affiliates' fee schedules (MIAX, MIAX Pearl, and MIAX 
Sapphire), all of which do not include text providing for a similar cap 
on the maximum number of Limited Service MEI/MEO Ports available to 
each market maker on those exchanges in their respective fee 
schedules.\9\ Instead, MIAX Emerald notes that information regarding 
caps is within its affiliates technical specifications and it proposed 
to take this same approach.\10\
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    \8\ See Securities Exchange Act Release No. 103163 (June 2, 
2025), 90 FR 24177 (June 6, 2025) (SR-EMERALD-2025-12).
    \9\ Id.
    \10\ See e.g., MIAX Pearl Options Exchange, MEO Interface 
Specification.
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    Additionally, in the Exchange's prior filings regarding Dedicated 
Cores, it referenced a similar offering by Nasdaq, the Dedicated OUCH 
server.\11\ In prior analysis done in the Exchange's fee filings, it 
noted that Nasdaq Stock Market, LLC (``Nasdaq''), introduced the 
Dedicated Ouch Port Infrastructure in 2014 which allows a member firm 
to assign up to 30 of its OUCH ports to a dedicated server 
infrastructure for its exclusive use.\12\ The Dedicated OUCH server 
handles only the subscribing member firm's message traffic sent through 
their ports on the Dedicated OUCH to Nasdaq's system. Similarly, a 
Dedicated Core only handles that subscribing firm's messaging activity. 
Nasdaq notes that with its Dedicated OUCH offering, member firms can 
develop a tailored solution by controlling their message traffic in 
order to optimize their trading strategies.\13\
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    \11\ See Securities Exchange Act Release No. 103511 (July 21, 
2025), 90 FR 34933 (July 24, 2025) (SR-CboeBYX-2025-020).
    \12\ For a more fulsome discussion, the Exchange previously 
underwent an extended analysis over the course of more than a year 
regarding the comparability of both offerings and their pricing 
structures, including the cap the Exchange proposed. See e.g., 
Securities Exchange Act Release No. 103511 (July 21, 2025), 90 FR 
34933 (July 24, 2025) (SR-CboeBYX-2025-020).
    \13\ Id.
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    Similar to the existing cap for Dedicated Cores, Nasdaq has a cap 
for its Dedicated OUCH offering. Nasdaq notes in its technical 
requirements that it has a cap of four Dedicated OUCH servers for a 
firm.\14\ While the Dedicated OUCH offering is within Nasdaq's fee 
schedule,\15\ it does not specify the cap for this product within the 
fee schedule nor within its rulebook.\16\ When Nasdaq previously filed 
fees for this product, it did not establish a cap for this

[[Page 27092]]

offering,\17\ nor did it do so in any subsequent filings.\18\
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    \14\ See <a href="https://nasdaqtrader.com/Trader.aspx?id=OUCH">https://nasdaqtrader.com/Trader.aspx?id=OUCH</a>.
    \15\ See <a href="https://www.nasdaqtrader.com/Trader.aspx?id=PriceListTrading2#connectivityouch">https://www.nasdaqtrader.com/Trader.aspx?id=PriceListTrading2#connectivityouch</a>.
    \16\ See Rulebook--The Nasdaq Stock Market. Equity Rules. Equity 
7 Pricing Schedule. Section 115. Ports and Services. Dedicated OUCH 
Port Infrastructure.
    \17\ See Securities Exchange Act Release No. 71198 (December 30, 
2013), 79 FR 692 (January 6, 2014) (SR-NASDAQ-2013-161).
    \18\ See e.g., Securities Exchange Act Release No. 74829 (April 
29, 2015), 80 FR 25745 (May 5, 2015) (SR-NASDAQ-2015-042).
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    As described in prior filings, Dedicated Cores are not an unlimited 
resource.\19\As such, the Exchange believes that including the cap on 
the number of Dedicated Cores in the Fee Schedule may hamper the 
Exchange's ability to provide fair and equitable access \20\ for all 
market participants to access the Exchange's network. By removing the 
cap from the Fee Schedule, the Exchange will be able to more easily 
adjust access, which may be based upon, among other factors, requests 
by market participants and planned server upgrades. The proposed change 
will ensure that the Exchange meets its obligations under the Act to 
offer access to the Exchange on terms that are not unfairly 
discriminatory \21\ among its market participants, as well as to ensure 
sufficient capacity and headroom in the System.\22\ The Exchange 
monitors the System's performance and makes adjustments to its System 
based on market conditions and Member demand. Accordingly, the 
Exchange's obligations under the Act to provide access on terms that 
are not unfairly discriminatory and market conditions are key drivers 
of the System's architecture and expansion. Thus, the Exchange believes 
a cap in the Fee Schedule is inconsistent with other exchanges' access 
offerings and no longer believes it serves as an appropriate mechanism 
to govern access to the Exchange. The proposed change is to align with 
industry standards and to ensure fair and equal access among market 
participants.
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    \19\ The Exchange was required for over a year to continue 
justifying its rationale behind establishing caps. Specifically, the 
Exchange noted that ``. . . it is reasonable to limit the number of 
Dedicated Cores Users can purchase because the Exchange has a finite 
amount of space in its third-party data centers to accommodate CPU 
cores, including Dedicated Cores. The Exchange must also take into 
account timing and cost considerations in procuring additional 
Dedicated Cores and related hardware such as servers, switches, 
optics and cables, as well as the readiness of the Exchange's data 
center space to accommodate additional Dedicated Cores in the 
Exchange's respective Order Handler Cabinets. Moreover, procuring 
data center space has grown to be more challenging than it was five 
years ago with the increased demand for data center space. For 
example, the U.S. colocation data center market has doubled in size 
in just four years. In addition to the Exchange's rollout of 
Dedicated Cores, the Exchange is mindful of its other business areas 
and the need to continue to be mindful of its existing, external 
restraints in procuring additional space in this area. The Exchange 
has, and will continue to, monitor market participant demand and 
space availability and endeavor to adjust the limit if and when the 
Exchange is able to acquire additional space and power within the 
third-party data centers and/or additional CPU Cores to accommodate 
additional Dedicated Cores. The Exchange monitors its capacity and 
data center space and thus is in the best place to determine these 
limits and modify them as appropriate in response to changes to this 
capacity and space, as well as market demand.'' See Securities 
Exchange Act Release No. 103511 (July 21, 2025), 90 FR 34933 (July 
24, 2025) (SR-CboeBYX-2025-020).
    \20\ 15 U.S.C. 78f(b)(5).
    \21\ Id.
    \22\ The term ``System'' shall mean the electronic 
communications and trading facility designated by the Board through 
which securities orders of Users are consolidated for ranking, 
execution and, when applicable, routing away. See Rule 1.5(aa).
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2. Statutory Basis
    The Exchange believes the proposed rule change is consistent with 
the Securities Exchange Act of 1934 (the ``Act'') and the rules and 
regulations thereunder applicable to the Exchange and, in particular, 
the requirements of Section 6(b) of the Act.\23\ Specifically, the 
Exchange believes the proposed rule change is consistent with the 
Section 6(b)(5) \24\ requirements that the rules of an exchange be 
designed to prevent fraudulent and manipulative acts and practices, to 
promote just and equitable principles of trade, to foster cooperation 
and coordination with persons engaged in regulating, clearing, 
settling, processing information with respect to, and facilitating 
transactions in securities, 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. Additionally, 
the Exchange believes the proposed rule change is consistent with the 
Section 6(b)(5) \25\ requirement that the rules of an exchange not be 
designed to permit unfair discrimination between customers, issuers, 
brokers, or dealers. The Exchange also believes the proposed rule 
change is consistent with Section 6(b)(4) \26\ of the Act, which 
requires that Exchange rules provide for the equitable allocation of 
reasonable dues, fees, and other charges among its Members and other 
persons using its facilities.
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    \23\ 15 U.S.C. 78f(b).
    \24\ 15 U.S.C. 78f(b)(5).
    \25\ Id.
    \26\ 15 U.S.C. 78f(b)(4).
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    In particular, the Exchange believes that removing this language 
from the Fee Schedule is consistent with the objectives of Section 
6(b)(5) of the Act because it will promote uniformity and consistency 
across the industry regarding caps for connectivity offerings. As noted 
above, MIAX Emerald and its affiliates do not include cap limitations 
within its fee schedules, but instead include these within each 
exchange's tech specs.\27\ Similarly, Nasdaq includes the cap for its 
Dedicated OUCH offering in its spec and not within its rulebook or fee 
schedule.\28\ The Exchange proposes to do the same here with its 
Dedicated Cores offering and will note caps within the Cboe Titanium 
Cboe U.S. Equities Binary Order Entry Specification.
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    \27\ Supra note 9.
    \28\ Supra note 13.
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    The Exchange also believes that its proposal is consistent with the 
objectives of Section 6(b)(5) of the Act \29\ because the same caps 
specified in the Cboe Titanium Cboe U.S. Equities Binary Order Entry 
Specification shall continue to apply to all participants, regardless 
of type or size, and will allow the Exchange to offer access to its 
System on terms that are not unfairly discriminatory. Including the cap 
on the number of Dedicated Cores in the Fee Schedule may unnecessarily 
burden the Exchange from being able to adjust access to the Exchange's 
System in order to ensure that the Exchange is able to provide access 
\30\ to all participants on non-discriminatory terms and ensure 
sufficient capacity and headroom in the System.
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    \29\ 15 U.S.C. 78f(b)(5).
    \30\ Id.
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    As the Exchange noted when it established these caps, the Exchange 
believes that it is reasonable to limit the number of Dedicated Cores 
Users can purchase because the Exchange has a finite amount of space in 
its third-party data centers to accommodate CPU cores, including 
Dedicated Cores. The Exchange must also take into account timing and 
cost considerations in procuring additional Dedicated Cores and related 
hardware such as servers, switches, optics and cables, as well as the 
readiness of the Exchange's data center space to accommodate additional 
Dedicated Cores in the Exchange's respective Order Handler Cabinets. 
Moreover, procuring data center space has grown to be more challenging 
than it was five years ago with the increased demand for data center 
space. For example, the U.S. colocation data center market has doubled 
in size in just four years. In addition to the Exchange's rollout of 
Dedicated Cores, the Exchange is mindful of its other business areas 
and the need to continue to be mindful of its existing, external 
restraints in procuring additional space in this area. The Exchange 
has, and will continue to, monitor market participant demand and space 
availability and endeavor to adjust the limit if and when the Exchange 
is able to acquire additional

[[Page 27093]]

space and power within the third-party data centers and/or additional 
CPU Cores to accommodate additional Dedicated Cores. The Exchange 
monitors its capacity and data center space and thus is in the best 
place to determine these limits and modify them as appropriate in 
response to changes to this capacity and space, as well as market 
demand.
    However, including the cap on the number of Dedicated Cores in the 
Fee Schedule unnecessarily burdens the Exchange from being able to 
adjust the connectivity and access to the Exchange's System in order to 
ensure that the Exchange is able to provide access to market 
participants on non-discriminatory terms and ensure sufficient capacity 
and headroom in the System. The Exchange constantly monitors the 
System's performance based on market conditions and needs to make 
adjustments based on customer demand. All exchanges, including BYX are 
required to provide access pursuant to the same requirements under 
Section 6(b)(5) of the Act regardless of whether their rules or fee 
schedules set forth caps on access.\31\ The Exchange believes that 
removing the cap on the number of Dedicated Cores from the Fee Schedule 
would enable the Exchange to be more responsive to market participants 
connectivity needs and allow the Exchange to better compete with other 
exchanges that do not currently provide similar connectivity 
limitations in their fee schedules.
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    \31\ Id.
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    This proposal is simply to include the caps on Dedicated Cores in 
the Cboe Titanium Cboe U.S. Equities Binary Order Entry Specification, 
rather than the Fee Schedule. Accordingly, the Exchange's obligations 
under Section 6(b)(5) of the Act \32\ and market conditions are key 
drivers of the System's architecture and expansion and thus the 
Exchange believes a cap in the Fee Schedule may hamper equal access to 
the Exchange.
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    \32\ 15 U.S.C. 78f(b).
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    Further, the Exchange anticipates that it will continue to expand 
its System and provide market participants with additional access, 
including Dedicated Cores, based on customer demand and in response to 
changing market conditions. The Exchange represents that any expansion 
or reduction in the number of additional Dedicated Cores will be 
conducted in a similar manner that ensures fair access to its 
System.\33\
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    \33\ Id.
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    Lastly, the Exchange believes the proposed rule change is 
consistent with Section 6(b)(4) \34\ of the Act as the Exchange notes 
that fees will continue to apply consistently to all Members and 
Sponsored Access Participants who choose to purchase Dedicated Cores. 
The caps that are within the Cboe Titanium U.S. Equities Binary Order 
Entry Specification will apply to all Members and Sponsoring Access 
firms alike (with one cap for Members and another for Sponsoring Access 
firms). The Exchange believes its maximum limits, and distinction 
between Members and Sponsored Participants, is another appropriate 
means to help the Exchange manage its allotment of Dedicated Cores and 
better ensure this finite resource is apportioned fairly. The Exchange 
will continue to assess the fees for Dedicated Cores as specified in 
its Fee Schedule and will cap the number of Dedicated Cores for a 
participant as set forth in the Cboe Titanium U.S. Equities Binary 
Order Entry Specification.
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    \34\ 15 U.S.C. 78f(b)(4).
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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 that is not necessary or appropriate 
in furtherance of the purposes of the Act. Rather, the proposal is 
intended to promote align the Exchange with industry standards 
regarding caps as several other exchanges do not provide a limitation 
on the number of ports or servers available to participants in their 
fee schedules.\35\ Thus the Exchange believes that providing the cap in 
the Fee Schedule may hamper the Exchange's ability to provide access to 
the Exchange on terms that are not unfairly discriminatory; rather, the 
Exchange will include the cap in the Cboe Titanium Cboe U.S. Equities 
Binary Order Entry Specification.
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    \35\ Supra notes 9 and 13.
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    The Exchange believes the proposal to no longer include the cap on 
the number of Dedicated Cores in the Fee Schedule will not impose any 
burden on competition because it will provide greater flexibility for 
the Exchange's ability to adjust access to the Exchange's network in 
order to ensure that the Exchange meets its obligations under the Act 
such that access to the Exchange is offered on terms that are not 
unfairly discriminatory among its Members, as well as ensure sufficient 
capacity and headroom in the System, as needed.
    The Exchange does not believe that the proposed rule change will 
impose a burden on intra-market competition because Dedicated Cores are 
available to all market participants on an equal basis at the same 
cost. It is a business decision of each market participant whether to 
pay for Dedicated Cores.

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

    The Exchange neither solicited nor received comments on the 
proposed rule change.

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

    The foregoing rule change has become effective pursuant to Section 
19(b)(3)(A) of the Act \36\ and paragraph (f) of Rule 19b-4 \37\ 
thereunder. 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 will institute proceedings to 
determine whether the proposed rule change should be approved or 
disapproved.
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    \36\ 15 U.S.C. 78s(b)(3)(A).
    \37\ 17 CFR 240.19b-4(f).
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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

    <bullet> Use the Commission's internet comment form (<a href="https://www.sec.gov/rules/sro.shtml">https://www.sec.gov/rules/sro.shtml</a>); or
    <bullet> Send an email to <a href="/cdn-cgi/l/email-protection#7e0c0b121b531d1113131b100a0d3e0d1b1d50191108"><span class="__cf_email__" data-cfemail="a8daddc4cd85cbc7c5c5cdc6dcdbe8dbcdcb86cfc7de">[email&#160;protected]</span></a>. Please include 
file number SR-CboeBYX-2026-019 on the subject line.

Paper Comments

    <bullet> 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-CboeBYX-2026-019. 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 (<a href="https://www.sec.gov/rules/sro.shtml">https://www.sec.gov/rules/sro.shtml</a>). Copies of the filing will

[[Page 27094]]

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-CboeBYX-
2026-019 and should be submitted on or before June 3, 2026.

    For the Commission, by the Division of Trading and Markets, 
pursuant to delegated authority.\38\
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    \38\ 17 CFR 200.30-3(a)(12).
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Vanessa A. Countryman,
Secretary.
[FR Doc. 2026-09474 Filed 5-12-26; 8:45 am]
BILLING CODE 8011-01-P


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