Notice2026-11809

Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Adopt Fees for Its New Clock Service

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Published
June 12, 2026

Issuing agencies

Securities and Exchange Commission

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<title>Federal Register, Volume 91 Issue 113 (Friday, June 12, 2026)</title>
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[Federal Register Volume 91, Number 113 (Friday, June 12, 2026)]
[Notices]
[Pages 35753-35755]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-11809]


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SECURITIES AND EXCHANGE COMMISSION

[Release No. 34-105634; File No. SR-CboeBZX-2026-050]


Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Notice of 
Filing and Immediate Effectiveness of a Proposed Rule Change To Adopt 
Fees for Its New Clock Service

June 9, 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 28, 2026, Cboe BZX Exchange, Inc. (the ``Exchange'' or ``BZX'') 
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

    Cboe BZX Exchange, Inc. (the ``Exchange'' or ``BZX Options'') 
proposes to adopt fees for its new Clock Service. 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>), 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
    The Exchange proposes to amend its fee schedule to adopt fees, 
including a free trial, for its new Clock Service offering, effective 
May 18, 2026.\3\ The Exchange recently adopted a new data product known 
as the Clock Service.\4\ The Clock Service is an optional product 
available to Members and non-Members alike. In sum, a subscriber is 
able to utilize the Clock Service to synchronize their time recording 
systems to those of the Exchange for correlated latency measurements 
between the Exchange's and the subscriber's systems time measurements 
related to the same message or order. Time synchronization services are 
well established in the U.S. and utilized in many areas of the U.S. 
economy and infrastructure. The Clock Service is not novel to the 
securities markets and it is similar to the network time 
synchronization service currently offered by MIAX Emerald, LLC (``MIAX 
Emerald'').\5\ The Exchange is providing the Clock Service in response 
to participant demand for more precise and more accurate clock 
synchronization options with the Exchange's network.
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    \3\ The Exchange initially submitted the proposed rule change on 
May 18, 2026 (SR-CboeBZX-2026-045). On May 28, 2026, the Exchange 
withdrew that filing and submitted this filing.
    \4\ Securities Exchange Act Release No. 105215 (April 13, 2026), 
91 FR 20515 (April 16, 2026) (SR-CboeBZX-2026-028).
    \5\ See Securities Exchange Act Release No. 94915 (May 16, 
2022), 87 FR 31022 (May 20, 2022) (SR-EMERALD-2022-16).
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    Under the Clock Service, participants would be able to synchronize 
their own primary clock devices to the Exchange's primary clock device, 
by receiving White Rabbit time signals from the Exchange via a 1 
gigabit per second (``Gbps'') Physical Port. The proposed Clock Service 
simply provides participants with the ability to synchronize with the 
Exchange's time signal at a more granular level, and, as part of the 
Clock Service, participants will receive a single 1 Gbps Physical Port 
connection offered by the Exchange in order to receive the signal.\6\ 
The improved time signal would tell the participant the Exchange's time 
at a more granular level at a particular point in time. The subscribing 
participant may then use that time signal to synchronize their own 
primary clock to the Exchange's primary clock.
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    \6\ The Exchange notes that MIAX Emerald, LLC similarly requires 
a 1 Gbps connection in order to utilize its respective clock 
service.
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    As part of the Clock Service, the Exchange proposes to adopt three 
fees. The first is for the Clock Service itself, while the two other 
fees are ancillary fees as part of the Clock Service, both of which are 
optional for subscribers of the Clock Service. The Exchange proposes a 
fee of $7,500/month for the Clock Service itself. As part of the Clock 
Service fee, the Exchange shall provide a 1 Gbps physical port for the 
participant to use solely for receiving a signal from the Clock 
Service.\7\
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    \7\ The Exchange notes that the 1 Gbps physical port that a 
participant shall receive as part of this Service shall be used 
solely for the purposes of the Clock Service and will not be able to 
be used for any other purpose (e.g., order routing).
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    The second fee the Exchange proposes is a redundant Clock Service 
connection--that includes a 1 Gbps physical port for a fee of $2,500/
month.\8\ The secondary connection is an optional offering that a 
subscriber may choose to purchase to supplement their existing Clock 
Service. This secondary connection can provide redundancy for a 
subscriber.
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    \8\ The Exchange notes that nothing precludes a firm from 
purchasing multiple secondary connections.
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    Lastly, the Exchange noted in its filing that customers will be 
required to procure licensing, as applicable. As such, the Exchange is 
also proposing a one-time High-Accuracy Timing IP Core (``HATI'') 
licensing set-up fee of $5,000 for each physical connection.\9\ The 
HATI license is for participants that do not use a White Rabbit-enabled 
Safran switch. For example, a firm that utilizes a non-Safran White-
Rabbit enabled device must have a HATI license in order to utilize the 
Clock Service and would be liable for this one-time fee.\10\ The one-
time fee is to enable the particular switch for White Rabbit so the 
firm may use its switch in connection with the Clock Service.
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    \9\ For example, if a participant chooses to purchase the 
secondary connection as well and requires the licensing for both 
connections, the firm will pay a one-time fee of $10,000.
    \10\ The Exchange notes that the type of switch a firm purchases 
is due to a firm's preference in how they optimize their physical 
infrastructure.
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    For a mid-month subscription, the monthly fee(s) shall be prorated 
based on the initial date of the subscription. For clarity, this does 
not apply to one-time setup fee for the HATI license.
    In connection with the launch of Cboe Clock Service, the Exchange 
proposes to introduce a free trial for the first 30 days for new 
subscribers. The free trial shall

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only apply to the Cboe Clock Service fee and, if applicable, a 
subscriber shall still be liable for (i) the one-time HATI set-up fee 
per connection and (ii) any additional Clock Service connections. A 
first-time subscriber would be any subscriber that has not previously 
subscribed to Cboe Clock Service. The Exchange believes the proposed 
trial will serve as an incentive for new subscribers to try the 
proposed Clock Service to determine if it fits the subscriber's needs. 
Particularly, the Exchange believes it will give potential subscribers 
the ability to use and test the service to determine if it fits its 
business needs.
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.\11\ Specifically, the 
Exchange believes the proposed rule change is consistent with the 
Section 6(b)(5) \12\ 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) \13\ 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) \14\ 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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    \11\ 15 U.S.C. 78f(b).
    \12\ 15 U.S.C. 78f(b)(5).
    \13\ Id.
    \14\ 15 U.S.C. 78f(b)(4).
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    The Commission has repeatedly expressed its preference for 
competition over regulatory intervention in determining prices, 
products, and services in the securities markets. Particularly, in 
Regulation NMS, the Commission highlighted the importance of market 
forces in determining prices and SRO revenues and recognized that 
current regulation of the market system ``has been remarkably 
successful in promoting market competition in its broader forms that 
are most important to investors and listed companies.'' \15\ The 
Service provides subscribing participants with a tool to assist them in 
recalibrating their own models and trading strategies to improve their 
overall experience on the Exchange, thereby potentially improving 
execution and order fill rates. This may improve the Exchange's overall 
market quality through increased liquidity and improved execution 
opportunities for resting orders, enhancing the Exchange's overall 
competitive position. The proposed fees are a result of the competitive 
environment of the U.S. options industry as the Exchange seeks to adopt 
fees to attract purchasers of the recently introduced Clock Service.
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    \15\ See Securities Exchange Act Release No. 51808 (June 9, 
2005), 70 FR 37496, 37499 (June 29, 2005) (``Regulation NMS Adopting 
Release'').
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    The Clock Service provides participants with the Exchange's time 
signal. The time signal provided by the Clock Service could be 
beneficial in multiple areas, one of which is enabling subscribers to 
more precisely measure latency between their network and that of the 
Exchange by utilizing technology that allows up to a sub-nanosecond 
level. The Clock Service will allow them to better understand the times 
at which their order or message reached certain points when traveling 
from their network to the Exchange through more granular latency 
measurements.
    The Exchange believes the fee proposals for the Clock Service 
(including the ancillary fees) are reasonable as the Exchange is 
offering any market participants access to subscribe for the Clock 
Service in the market participant's sole discretion based on their 
unique business needs. Clock Service is optional for market 
participants to subscribe to if they believe it to be helpful and are 
not required for market participants to purchase in order to access the 
Exchange. Additionally, subscribers may cancel their usage of the Clock 
Service at any time.
    As described above, the Exchange proposes to assess a monthly fee 
of $7,500 for the Clock Service. This fee also includes a 1 Gbps 
physical port. The Clock Service may be used for the Exchange and its 
affiliated equities and options exchanges (meaning a customer can 
receive this service for all eight Cboe exchanges). In comparison, as 
noted above, MIAX Emerald offers a comparable service--the High 
Precision Network Time Signal Service--at a fee of $3,800/month. 
Customers purchase their 1 G physical connection separately (at a cost 
of $1,500/month) in order to receive the High Precision Network Time 
Signal Service, meaning that the total cost to use this service for 
MIAX Emerald only is $5,300 ($3,800 for the service and $1,500 for the 
physical connection). While the Exchange notes its fee is higher than 
MIAX Emerald's, it is important to distinguish the fact that the 
Exchange's comparable offering (as the Exchange noted previously, a 1 
Gbps physical connection is included with its Clock Service) can be 
obtained for a fee of $7,500 which can be used to access this service 
for all eight exchanges, and thus, the Exchange believes it is 
reasonable that its fee is higher than MIAX Emerald's.
    In connection with the Clock Service, the Exchange also proposes 
two ancillary fees. The Exchange proposes to assess a fee for an 
optional, additional connection for participants. This is an additional 
Clock Service connection that includes a 1 Gbps physical port for which 
participants may use as a back-up connection to receive the Exchange's 
time signal through the Clock Service. If a firm wanted to purchase the 
equivalent setup for MIAX Emerald, a firm would be required to purchase 
MIAX's service at a fee of $5,300 and two 1 Gb connections (as MIAX 
offers a secondary signal at no cost already with its product). The 
total cost for this would be $6,800 ($3,800 (for the service) + $1,500 
(for the 1 Gb physical connection) + $1,500 (for the additional 1 Gb 
physical connection to access the secondary/redundant signal)). Again, 
while the Exchange notes that purchasing an optional, additional 
connection separately is higher, a total cost of $10,000 when combined 
with the monthly fee of the Clock Service ($7,500 (for the Clock 
Service) + $2,500 (for the redundant signal)), the Exchange's Clock 
Service permits you to connect to all of Cboe's options and equities 
exchanges. Meaning, that for less than double the cost of MIAX 
Emerald's service, which is only for one Exchange, a participant is 
able to use the Exchange's Clock Service for eight Cboe exchanges.
    Lastly, the Exchange believes the one-time ancillary fee of $5,000 
per connection for the HATI license set-up is appropriate. The Exchange 
proposes to charge a fee to participants to enable their connections 
for the Clock Service, if required. For participants that do not use 
Safran White Rabbit switches, a HATI license is required. Specifically, 
a participant that has a non-Safran White-Rabbit enabled device must 
have a

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HATI license in order to utilize the Clock Service. As such, the 
Exchange is providing the HATI license (and set-up) for $5,000 per 
physical connection in order for a participant to be enabled to utilize 
the Clock Service. The one-time cost of $5,000 per physical connection 
reflects both the license itself as well as the workflow for installing 
the HATI solution.
    The Exchange believes that the proposed free trial for any new 
Clock Service subscriber is reasonable because such users would not be 
subject to fees for the first 30 days of subscribing. The Exchange 
believes the proposed free trial is also reasonable as it will give 
potential subscribers the ability to use and test Cboe Clock Service 
prior to subscribing for additional months and will therefore encourage 
and promote new users to purchase the Cboe Clock Service
    The proposal would also not permit unfair discrimination as the 
proposed Clock Service is available to all market participants, who may 
opt to subscribe to the Clock Service and will help to protect a free 
and open market by continuing to provide additional services (offered 
on an optional basis for a fee) to the marketplace and by providing 
investors with greater choices. The Exchange believes that the proposed 
trial is equitable and not unfairly discriminatory because it will 
apply equally to all new subscribers to the Clock Service. As such, the 
Exchange believes that the proposed fees are reasonable and set at a 
level to compete with other exchanges that may choose to offer a 
similar service.

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. The Exchange believes the 
reports will contribute to robust competition among national securities 
exchanges. The Clock Service further enhances competition between 
exchanges by allowing the Exchange to expand its product offerings to 
include services similar to services that are currently offered by 
other exchanges.\16\
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    \16\ See e.g., MIAX Emerald Rule 531.
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    The Exchange also does not believe the proposed fees would cause 
any unnecessary or inappropriate burden on intermarket competition as 
other exchanges are free to introduce their own comparable offerings 
with lower prices to better compete with the Exchange's offerings. The 
Exchange operates in a highly competitive environment, and its ability 
to price the reports is constrained by competition among exchanges who 
choose to adopt similar products. The Exchange must consider this in 
its pricing discipline in order to compete for subscribers of the 
Exchange's market data via the reports. For example, proposing fees 
that are excessively higher than fees for potentially similar offerings 
would simply serve to reduce demand for the Exchange's Clock Service, 
which as discussed, market participants are under no obligation to 
utilize. In this competitive environment, potential purchasers are free 
to choose which, if any, similar product to purchase to satisfy their 
need for market information. As a result, the Exchange believes this 
proposed rule change permits fair competition among national securities 
exchanges.
    The Exchange does not believe the proposed rule change would cause 
any unnecessary or inappropriate burden on intramarket competition. 
Particularly, the proposed fees apply uniformly to any purchaser in 
that the Exchange does not differentiate between the different 
participants that may purchase Clock Service.

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 \17\ and paragraph (f) of Rule 19b-4 \18\ 
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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    \17\ 15 U.S.C. 78s(b)(3)(A).
    \18\ 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#2351564f460e404c4e4e464d5750635046400d444c55"><span class="__cf_email__" data-cfemail="1e6c6b727b337d7173737b706a6d5e6d7b7d30797168">[email&#160;protected]</span></a>. Please include 
file number SR-CboeBZX-2026-050 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-CboeBZX-2026-050. 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 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-CboeBZX-2026-050 and 
should be submitted on or before July 6, 2026.

    For the Commission, by the Division of Trading and Markets, 
pursuant to delegated authority.\19\
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    \19\ 17 CFR 200.30-3(a)(12).
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Sherry R. Haywood,
Assistant Secretary.
[FR Doc. 2026-11809 Filed 6-11-26; 8:45 am]
BILLING CODE 8011-01-P


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Indexed from Federal Register on June 12, 2026.

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