Ms. Vanessa A. Countryman
Agency decision
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Abers Capital
Paris, France
September 4, 2026
BY ELECTRONIC MAIL
Ms. Vanessa A. Countryman
Secretary
Securities and Exchange Commission
100 F Street, NE
Washington, DC 20549-1090
Re: Petition for Rulemaking Pursuant to Rule 192(a) of the Commission’s Rules of Practice,
17 C.F.R. § 201.192(a) — Request that the Commission Amend NYSE Arca Rule 7.35-E
(Auctions) Pursuant to Section 19(c) of the Securities Exchange Act of 1934 to Restore and
Supplement the Auction Imbalance Information Disseminated by NYSE Arca, Inc.
Reference: File No. SR-NYSEARCA-2025-67, Securities Exchange Act Release No. 34-103886
(September 5, 2025), 90 FR 43676 (September 10, 2025)
Dear Ms. Countryman:
Pursuant to Rule 192(a) of the Commission’s Rules of Practice, 17 C.F.R. § 201.192(a), Abers
Capital (“Petitioner,” “we,” or “us”) respectfully petitions the Securities and Exchange Commission
(the “Commission”) to exercise its authority under Section 19(c) of the Securities Exchange Act of
1934 (the “Exchange Act”), 15 U.S.C. § 78s(c), to amend Rule 7.35-E (Auctions) of NYSE Arca,
Inc. (“NYSE Arca” or the “Exchange”).
As Rule 192(a) requires, this petition sets forth (i) the text of the amendments requested (Part
VI), (ii) the nature of Petitioner’s interest (Part II), and (iii) Petitioner’s reasons for seeking the
amendments (Parts III through V).
I. Introduction and Summary of the Relief Requested
Through SR-NYSEARCA-2025-67, an immediately effective filing under Section 19(b)(3)(A)(iii)
of the Exchange Act and Rule 19b-4(f)(6) thereunder, NYSE Arca changed the basis on which
it calculates the Auction Imbalance Information it disseminates. Imbalance and volume figures
previously calculated at the Indicative Match Price — the price at which the auction would actually
occur — are now calculated at the Auction Reference Price, a price that is by design external
to the auction book and, for the Early Open Auction, a full trading day stale. In the same filing,
the Exchange deleted the provision under which, when the auction book contained a BBO but no
Matched Volume, the disseminated Indicative Match Price was the price of the side of the BBO
with the greater volume, and replaced it with a rule setting the disseminated Indicative Match Price
to zero.
Petitioner does not ask the Commission to reopen SR-NYSEARCA-2025-67, to disturb the Auction
Reference Price framework the Exchange adopted, or to take any position on the merits of that
framework. The Exchange’s Auction Reference Price–based fields may remain exactly as they are.
1
Petitioner asks only that the Commission restore, and require the Exchange to disseminate alongside
those fields, the small set of Indicative Match Price–based data that made the Auction Imbalance
Information a usable description of the auction book. Specifically, Petitioner requests that the
Commission amend NYSE Arca Rule 7.35-E as follows:
Request 1 — The disseminated Indicative Match Price will no longer be set to
zero merely because there is no Matched Volume. The words added to Rule 7.35E(a)(8)(D) by SR-NYSEARCA-2025-67 — providing that, if there is no Matched
Volume, the Indicative Match Price for the Auction Imbalance Information will be set
to zero — would be deleted. Rule 7.35-E(a)(8)(E), which provides that the Indicative
Match Price for the Auction Imbalance Information will be zero where there is no
Matched Volume and Market Orders on only one side of the market, would remain in
effect unchanged.1
Request 2 — The Auction Imbalance Information will disseminate the Imbalance
as an additional parameter. Rule 7.35-E(a)(4) would be amended to include the
Imbalance among the elements of the Auction Imbalance Information. Because Rule
7.35-E(a)(7) already defines Imbalance by reference to the Indicative Match Price, no
change to that definition is required: where there is Matched Volume, the disseminated
Imbalance would be calculated at the Indicative Match Price. Rule 7.35-E(a)(8)(D)
would be amended to provide that, if there is a BBO but no Matched Volume, the
Indicative Match Price and the Imbalance for the Auction Imbalance Information will
be (i) the side of the BBO that has the higher volume or (ii) if the volume of the BB
equals the volume of the BO, the BB.2
Request 3 — The Auction Imbalance Information will disseminate the Auction
Volume as an additional parameter. A new Rule 7.35-E(a)(9)(A) would define
“Auction Volume” as the number of buy and sell shares that can be matched at the
Indicative Match Price at any given time, and would provide that the Auction Volume
is disseminated as part of the Auction Imbalance Information. Rule 7.35-E(a)(4) would
be amended accordingly.
These are additive amendments. They enrich one field the Exchange already disseminates and add
two more, all computed from values it already produces. They do not alter the price at which any
auction is conducted; they do not alter the Auction Reference Price or any figure calculated from it;
they do not alter the validation of LOC, MOC, LOO or MOO Orders under Rules 7.35-E(d)(2)(A)
and 7.35-E(e)(8)(A), which would continue to reference the Total Imbalance; and they do not alter
the Trading Halt Auction extension logic under Rule 7.35-E(e)(6)(B). Every value the amendments
would require the Exchange to publish is a value the Exchange already computes or holds. What
1 Rule 7.35-E(a)(8)(E) cannot operate in the Early Open Auction. It applies only where there are Market Orders on
one side of the market, and only Limit Orders are eligible to participate in the Early Open Auction. See Rule 7.35-E(b).
A disseminated Indicative Match Price of zero in that auction can therefore arise only under Rule 7.35-E(a)(8)(D).
2“BBO” means the best bid or offer on the NYSE Arca Marketplace; “BB” means the best bid and “BO” the best
offer. See Rule 1.1. Interest resting on only one side of the auction book therefore constitutes a BBO for purposes of
Rule 7.35-E(a)(8)(D), and the requested amendment would supply both an Indicative Match Price and an Imbalance in
that case.
2
changed in SR-NYSEARCA-2025-67 is not what the Exchange calculates, but what it tells the
public.
The text of the requested amendments is set out in Part VI, in redline against the rule text currently
in effect. The Appendix sets out, for each provision this petition would amend and each it would
leave untouched, the text before SR-NYSEARCA-2025-67, the text now in effect, and the text as
this petition would leave it.
II. Nature of Petitioner’s Interest (Rule 192(a))
Petitioner is a family investment office specializing in arbitrage. By arbitrage we mean locking in
a profit by entering simultaneously into transactions in two or more markets. NYSE Arca’s Early
Open Auction and Core Open Auction — both of which rely on the Auction Imbalance Information
definitions amended by SR-NYSEARCA-2025-67 — are among the venues in which we have
historically participated.
We are, and were at all relevant times, a paying subscriber to NYSE Arca auction data, which we
receive through our broker.
We did not initially know the cause of the problem described in this petition. On November
14, 2025, some time after the operative date of SR-NYSEARCA-2025-67, we submitted our
first support ticket to our broker regarding missing or inaccurate data in NYSE Arca’s auctions,
beginning with the Early Open Auction. Having received no satisfactory response over the following
months, we submitted a formal letter of complaint to the broker on June 11, 2026. Through the
broker’s compliance department we ultimately learned that the source of the problem was not the
broker’s systems but NYSE Arca’s amendment of Rule 7.35-E under SR-NYSEARCA-2025-67.
That sequence is itself informative: we needed approximately nine months and the intervention
of a broker’s compliance department to discover that the auction data we were receiving had been
redefined into uselessness.
Our injury is concrete and twofold.
First, we continue to pay NYSE Arca’s monthly auction data fees for information that, since
SR-NYSEARCA-2025-67 became operative, no longer provides an accurate or reliable summary of
the auction process. We are paying the same price for a materially degraded product.
Second, and more significantly, we have been unable to participate fully in NYSE Arca’s auctions
and have lost specific arbitrage opportunities that depended on the information the Exchange
formerly disseminated. Where the auction book contains a BBO but no Matched Volume — a
condition that is common in the Early Open Auction and in less liquid securities, and that is
precisely the condition in which a participant’s added liquidity is most valuable — we now receive
an Indicative Match Price of zero (see Figure 1) and imbalance and volume fields that are blank or
computed at a price unrelated to the resting interest. We are told nothing that would allow us to
price an order into that auction.
Petitioner’s interest is therefore that of a directly and continuously affected market participant and
paying data subscriber.
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III. Background
A. The framework before SR-NYSEARCA-2025-67
Immediately before SR-NYSEARCA-2025-67, and in materially identical terms in the Exchange’s
2017 integrated rulebook, the provisions of NYSE Arca Rule 7.35-E on which this petition turns
read as follows.3 Under that framework:
• “Imbalance” (Rule 7.35-E(a)(7)) meant the number of buy (sell) shares that could not
be matched with sell (buy) shares at the Indicative Match Price at any given time and
unless otherwise specified, included the non-displayed quantity of Reserve Orders eligible to
participate in the applicable auction.
• “Total Imbalance” (Rule 7.35-E(a)(7)(A)) meant the net Imbalance of all buy (sell) shares
at the Indicative Match Price for all orders eligible to trade in the applicable auction. The
two terms were, as the Exchange itself has acknowledged, essentially synonymous.
• “Matched Volume” (Rule 7.35-E(a)(9)) meant the number of buy and sell shares that could
be matched at the Indicative Match Price at any given time.
• Rule 7.35-E(a)(8)(D) provided that if there was a BBO, but no Matched Volume, the Indicative
Match Price and Total Imbalance for the Auction Imbalance Information would be (i) the side
of the BBO that had the higher volume, or (ii) if the volume of the BB equaled the volume of
the BO, the BB.
• Rule 7.35-E(a)(8)(E) provided that if there was no Matched Volume and Market Orders on
only one side of the market, the Indicative Match Price for the Auction Imbalance Information
would be zero.
The organizing principle was coherent and, we submit, correct. Every disseminated imbalance and
volume figure was anchored, expressly or in substance, to the Indicative Match Price — the price at
which, on the current book, the auction would actually take place. The Indicative Match Price, the
Matched Volume and the Total Imbalance together constituted an accurate and reliable summary
of the auction book: the price, the depth at that price, and the residual interest that could not be
filled at that price. And in the one case where there was no such price because nothing crossed,
subparagraph (D) supplied the next most useful thing: the best resting price on the deeper side, so
that a participant could see where interest actually was and respond to it.
B. SR-NYSEARCA-2025-67
On August 27, 2025, NYSE Arca filed SR-NYSEARCA-2025-67, which the Commission noticed
on September 5, 2025.4 The filing was made under Section 19(b)(3)(A)(iii) of the Exchange Act and
Rule 19b-4(f)(6) thereunder, on the representation that it does not significantly affect the protection
3The
text set out in this Part is the text in effect immediately before SR-NYSEARCA-2025-67, as established by the bracketed deletions in the rule text the Exchange filed as Exhibit 5 to that filing, available at https://www.sec.gov/files/rules/sro/nysearca/2025/34-103886-ex5.pdf. The same provisions appear in
materially identical terms in the Exchange’s 2017 integrated rulebook. See Exhibit 5B to SR-NYSEArca2017-40, Securities Exchange Act Release No. 34-80929 (June 14, 2017), 82 FR 28157, available at
https://www.sec.gov/files/rules/sro/nysearca/2017/34-80929-ex5b.pdf.
4 Securities Exchange Act Release No. 34-103886 (Sept. 5, 2025), 90 FR 43676 (Sept. 10, 2025) (SR-NYSEARCA2025-67).
4
of investors or the public interest and imposes no significant burden on competition. It was effective
on filing and operative thirty days later; the Exchange stated it would implement the change no
later than the fourth quarter of 2025 and announce the implementation date by Trader Update.
The filing states that it makes the same changes as its affiliate NYSE American, LLC made in
SR-NYSEAMER-2025-52, and that each of the amendments is “based on” the corresponding NYSE
American rule “without any changes.” No written comments were solicited or received.
The filing made four changes relevant here:
1. Total Imbalance (Rule 7.35-E(a)(7)(A)) was redefined, for purposes of the Auction Imbalance
Information, as the net Imbalance calculated at the Auction Reference Price. The Exchange
expressly noted that this “would distinguish the Total Imbalance from the Imbalance,” and
that “Imbalance would continue to be calculated at the Indicative Match Price.”
2. Market Imbalance (Rule 7.35-E(a)(7)(B)) was likewise redefined at the Auction Reference
Price for dissemination purposes, while continuing to be calculated at the Indicative Match
Price for auction extension logic.
3. Matched Volume (Rule 7.35-E(a)(9)) was likewise bifurcated: at the Indicative Match Price
for auction processing, at the Auction Reference Price for the Auction Imbalance Information.
4. Rule 7.35-E(a)(8)(D) was rewritten. The subparagraph now reads in its entirety: If there is
no Matched Volume, the Indicative Match Price for the Auction Imbalance Information will
be set to zero.
At the time of SR-NYSEARCA-2025-67, Rule 7.35-E(a)(8)(A) defined the Auction Reference
Price, per auction type, as follows:
Auction
Auction Reference Price
Early Open Auction
Core Open Auction
Prior trading day’s Official Closing Price
The midpoint of the Auction NBBO or, if the
Auction NBBO is locked, the locked price. If
there is no Auction NBBO, the prior trading
day’s Official Closing Price
Last consolidated round-lot price of that trading
day and, if none, the prior trading day’s Official
Closing Price
Last consolidated round-lot price of that trading
day and, if none, the prior trading day’s Official
Closing Price (except as provided for in Rule
7.35-E(e)(7)(A))
Zero, unless the Exchange is provided with a
price for the security
Closing Auction
Trading Halt Auction
IPO Auction
The Exchange has since further amended the calculation of the Auction Reference Price.5 As
currently in effect, Rule 7.35-E(a)(8)(A) provides:
5 See Securities Exchange Act Release No. 34-104852 (Feb. 17, 2026) (SR-NYSEARCA-2026-15).
5
Auction
Auction Reference Price*
Early Open Auction
Core Open Auction
Prior trading day’s Official Closing Price.
• The price of the last consolidated trade of at
least one round lot of that trading day; or
• if there were no such trades, the midpoint of
the Auction NBBO; or
• if the Auction NBBO is locked, the locked
price; or
• if there is no Auction NBBO, for the initial
calculation, the prior trading day’s Official
Closing Price; for each subsequent calculation,
the most recent Auction Reference Price.**
The price of the last consolidated trade of at
least one round lot of that trading day and, if
none, the prior trading day’s Official Closing
Price.
The price of the last consolidated trade of at
least one round lot of that trading day and, if
none, the prior trading day’s Official Closing
Price (except as provided for in Rule
7.35-E(e)(7)(A)).
Zero, unless the Exchange is provided with a
price for the security.
Closing Auction
Trading Halt Auction
IPO Auction
* Auction Reference Price calculations for the Core Open Auction, Closing Auction, and Trading
Halt Auction exclude trades on Trade Reporting Facilities during the Early Trading Session or Late
Trading Session.
** Auction Reference Price calculations are based on an evaluation of the period since the last
calculation of the Auction Reference Price.
Those amendments adjust only how the Auction Reference Price is derived; they do not address,
and do not remedy, the problem described in this petition.
C. The effect in practice
The Exchange’s filing states: “The Exchange does not propose any change to its use of the Indicative
Match Price as the price at which auctions would take place.” That statement is accurate as to
auction execution. It is, we respectfully submit, misleading as to practical effect — because what a
participant sees is now systematically decoupled from what the auction does.
Three consequences follow.
First, the disseminated Indicative Match Price is now zero in exactly the circumstance where
price information is most needed. Before the amendment, when limit bids were below limit offers,
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or when limit orders rested on only one side of the book, a participant saw the price of the deeper
side of the BBO and could respond to it — improving a bid, meeting an offer, or supplying the
contra interest that would create a crossing book. Now that participant sees zero. It conveys no
information about where interest rests, in what size, or on which side. A participant cannot easily
improve a bid it cannot see.
Second, the disseminated Total Imbalance and Matched Volume no longer describe the auction
book. They describe a hypothetical book measured at a price that is, by construction, exogenous to
the auction. For the Early Open Auction, that price is the prior trading day’s Official Closing Price
— a price that may be hours or days stale and that may bear no relation to the interest actually resting
in the auction. For the Core Open Auction, the consequence is stranger still: the disseminated Total
Imbalance can change from one second to the next because the Auction Reference Price moved,
even though neither the buy side nor the sell side of the auction book has changed at all. A data
field that moves when the underlying thing it purports to measure has not moved is not enhanced
information; it is noise presented as signal.
Third, the accurate figures still exist — they are simply no longer published. This is the crux of
the matter, and it is undisputed on the face of the Exchange’s own filing. The Exchange states that
Imbalance “would continue to be calculated at the Indicative Match Price”; that it “will continue
to use the Indicative Match Price in calculating Market Imbalance for purposes such as auction
extension logic”; and that Matched Volume “will continue to be based on the Indicative Match
Price” for purposes of auction processing. Indeed, the operative rule text preserves the Indicative
Match Price calculations expressly, carving out the Auction Imbalance Information by proviso
in the case of Market Imbalance and Matched Volume, and omitting the Imbalance from the list
of disseminated fields altogether. The Exchange therefore already holds, in the ordinary course
and at least once per second, every value this petition asks it to publish. The change effected by
SR-NYSEARCA-2025-67 was, in substance, a decision to stop disclosing information the Exchange
continues to possess.
A concrete illustration makes the point. Consider an Early Open Auction in a security whose
prior trading day’s Official Closing Price — and therefore whose Auction Reference Price — is
$10.10. The auction book contains a bid for 100 shares at $10.00 and an offer of 20,000 shares at
$10.18. Nothing crosses, so there is no Matched Volume. Nor is either order eligible at the Auction
Reference Price: a $10.00 bid will not pay $10.10, and a $10.18 offer will not accept it.
Parameter
Indicative Match Price
Total Imbalance
Matched Volume
Imbalance
Auction Volume
Before
SR-NYSEARCA2025-67
Currently
in effect
Under
this petition
$10.18
20,000 (sell)
0
not disseminated
not disseminated
not disseminated
not disseminated
$10.18
unchanged
unchanged
20,000 (sell)
An empty cell indicates a field that carries no value on the participant’s display.
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Today, a participant observing this auction receives an Indicative Match Price of zero and blank
Total Imbalance and Matched Volume fields. It cannot tell whether the book is empty, whether
there is a large seller at $10.18, or whether there is a large buyer at $10.00. It has no basis on
which to price an order. Under the requested amendments, the same participant would see that there
is a 20,000-share seller at $10.18 and could enter a buy order accordingly — which is precisely
the behavior the Exchange said, in describing the former rule, that it wanted to encourage: “The
Exchange publishes the Indicative Match Price in this manner to continue to attract interest to
participate in the auction.”
Nothing in the Exchange’s filing explains why that objective ceased to be worth pursuing.
This is not hypothetical. Figure 1 reproduces the Auction Imbalance Information disseminated for
WDTE, an NYSE Arca–listed security, at 03:42:38 Eastern Time on July 6, 2026, shortly before that
day’s Early Open Auction. The auction book contained sell interest only, at prices at or below the
Auction Reference Price of $29.84. The Bid and Ask columns in the capture show the consolidated
quote. The Exchange disseminated an Indicative Match Price of 0.00, a blank Matched Volume
field, and a Total Imbalance of 3. Under the requested amendments the same auction would have
shown the price of the best resting offer and an Imbalance of 3 or lower on the sell side — a price
and a size a participant could act on.
F IGURE 1. AUCTION I MBALANCE I NFORMATION DISSEMINATED BY NYSE A RCA FOR WDTE,
E ARLY O PEN AUCTION , J ULY 6, 2026, 03:42:38 E ASTERN T IME .
Upper: the full row as displayed, with column headers. Lower: detail of the Volume,
Auc. Price, Auc. Volume and Imbalance columns of the same row.
IV. Reasons for the Requested Amendments (Rule 192(a))
A. The requested amendments would restore information that is material to auction participation and price discovery
An auction is a mechanism for aggregating dispersed interest into a single clearing price. It works
to the extent that participants can see enough of the book to decide whether and at what price to add
interest to it. The three parameters this petition would restore are the minimum sufficient description
of an auction book: the price at which it would clear (Indicative Match Price), the quantity that
would trade there (Auction Volume), and the quantity that would not (Imbalance). Taken together,
they tell a participant where the auction is, how deep it is, and what is left over. Each is meaningless
without the other two, and all three are meaningless when measured at a price at which the auction
will not occur.
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The Exchange’s stated rationale for the zeroing rule — that it “is logical because, if there is no
Matched Volume, an auction would not take place” — proves too much. Whether an auction would
take place on the current book is not the question a participant is asking. The participant is asking
whether it should cause one to take place by adding interest. That is the entire economic function
of pre-auction transparency, and the Exchange’s own prior rule was drafted to serve it. A rule that
withholds price information precisely when the book has not yet crossed is a rule that suppresses
the incremental order most likely to improve the auction.
B. The requested amendments are consistent with Section 6(b)(5) of the Exchange Act
Section 6(b)(5), 15 U.S.C. § 78f(b)(5), requires that the rules of an exchange be designed to remove
impediments to and perfect the mechanism of a free and open market and a national market system,
and to protect investors and the public interest. Publishing an Indicative Match Price of zero when a
real, actionable price exists in the auction book is an impediment to that mechanism, not a perfection
of it. The Exchange characterized the zeroing rule as promoting “transparency.” With respect,
replacing a true and useful price with a fixed constant is the opposite of transparency: it substitutes
a value that is knowably wrong as a description of the book for one that was right.
We note that the Exchange defended the amendment in part on the ground that “because the Total
Imbalance, Market Imbalance, and Matched Volume would, as proposed, be calculated based on
the Auction Reference Price instead of the Indicative Match Price for purposes of the Auction
Imbalance Information, the Exchange would continue to disseminate price information that could
encourage participation in the auction.” That reasoning does not survive the illustration in Part III.C.
The Auction Reference Price–based figures do not encourage participation in the auction, because
they are not about the auction. In the example above, they are blank at the same moment that the
book contains a 20,000-share seller at a real price.
C. The requested amendments are consistent with Section 11A of the Exchange Act, and with
the Commission’s own assessment of auction information
Section 11A(a)(1)(C)(iii), 15 U.S.C. § 78k-1(a)(1)(C)(iii), states that it is in the public interest and
appropriate for the protection of investors to assure the availability to brokers, dealers, and investors
of information with respect to quotations for and transactions in securities. Auction imbalance
information is precisely such information, and the Commission has said so. In adopting the market
data infrastructure rules, the Commission added auction information to the definition of core data,
explaining:
Auctions have become increasingly significant liquidity events. Information about the
orders participating in an auction can help market participants decide whether and how
to submit orders in and around an auction and understand the potential price moves
upon completion of the auction.6
That passage is a precise description of the use Petitioner made of the Auction Imbalance Information
before SR-NYSEARCA-2025-67, and of what the amendment took away. Information about “the
6 Market Data Infrastructure, Securities Exchange Act Release No. 34-90610 (Dec. 9, 2020), 86 FR 18596 (Apr. 9,
2021), at 27 (adopting the definition of “auction information” as an element of core data).
9
orders participating in an auction” is exactly what the Indicative Match Price, the Imbalance and the
Auction Volume convey, and exactly what figures computed at a price external to the auction do not.
The requested amendments would restore the Commission’s stated rationale to the data NYSE Arca
disseminates, at no cost to any other statutory objective.
D. The amendment did impose a burden on competition, and the requested amendments
would relieve it
The Exchange’s statement on burden on competition reads, in its entirety:
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. As noted above, the Exchange believes that the proposed change could instead
encourage competition by improving the quality of auction imbalance information
disseminated by the Exchange.
We are living evidence to the contrary. The degradation of the disseminated information has placed
us — an active auction participant whose strategies depend on that information — at a competitive
disadvantage relative to participants who do not depend on it, including those with the resources
to reconstruct the auction book from other sources or to absorb the cost of participating blind. A
market participant that can no longer compete on an equal footing is a decrease in competition,
not evidence of the improvement the Exchange claims. The predictable results — fewer orders
entering auctions in which the book has not yet crossed, thinner auction liquidity, and degraded
price discovery — are consequences the Commission is directed to weigh under Sections 3(f) and
23(a)(2) of the Exchange Act, 15 U.S.C. §§ 78c(f) and 78w(a)(2).
We observe that the burden-on-competition analysis in SR-NYSEARCA-2025-67 consists of
two sentences, that the filing was made under a provision reserved for rule changes that do not
significantly affect the protection of investors or the public interest, that no comments were solicited
or received, and that the entire substantive justification for the zeroing of the Indicative Match Price
is the single observation that an auction would not take place if there were no Matched Volume. The
competitive effects described above were never analyzed, because the filing’s procedural posture
never required them to be.
E. The requested amendments impose minimal burden on the Exchange
The Imbalance and the Auction Volume are values the Exchange already computes for its own
auction processing, and the Indicative Match Price required by Request 1 is derived from the
Exchange’s own BBO. The requested amendments therefore require no new calculation logic —
only the inclusion of existing internal values in an existing proprietary data feed that already carries
the ten fields listed in Rule 7.35-E(a)(4) and is already updated at least once per second. The
Exchange would incur an implementation and message-size cost, which we do not minimize, but it
is a cost of publication, not of computation. Set against the restoration of a market participant’s
ability to participate in the Exchange’s auctions at all, that cost is plainly “necessary or appropriate
in furtherance of the purposes” of the Exchange Act.
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We further note that the requested amendments are strictly additive. No existing field is removed,
renamed, or recalculated. Any participant, vendor, or system that has adapted to the Auction
Reference Price–based fields may continue to consume them unchanged. The Commission need
take no position whatsoever on whether the Auction Reference Price is a superior or inferior basis
for imbalance calculation; this petition is agnostic on that question by design.
V. The Commission’s Authority, and Why Section 19(c) Is the Appropriate
Vehicle
Section 19(c) of the Exchange Act, 15 U.S.C. § 78s(c), authorizes the Commission, by rule adopted
in accordance with the notice-and-comment procedures of 5 U.S.C. § 553, to abrogate, add to,
and delete from the rules of a self-regulatory organization as the Commission deems necessary
or appropriate to insure the fair administration of the self-regulatory organization, to conform its
rules to the requirements of the Exchange Act, or otherwise in furtherance of the purposes of
the Exchange Act. The requested amendments fall within the third of these grounds: they would
further the purposes of Sections 6(b)(5) and 11A by improving the accuracy and utility of auction
information disseminated to all market participants.
We recognize that Section 19(c) is an extraordinary authority and that the Commission ordinarily
and properly leaves the content of exchange rules to the exchanges in the first instance. We ask the
Commission to use it here because the ordinary alternatives are foreclosed or futile:
The SR-NYSEARCA-2025-67 proceeding is closed. The filing was immediately effective under
Section 19(b)(3)(A)(iii). Its comment period closed on October 1, 2025. The Commission’s sixtyday window to summarily suspend the rule change under Section 19(b)(3)(C) has long since passed.
We are not asking the Commission to reopen that proceeding, and we recognize that it cannot.
A comment letter has no vehicle. There is no pending filing on which to comment. The Exchange’s
subsequent filings concerning the Auction Reference Price do not touch the provisions at issue.
A request to the Exchange would not be productive. The Exchange has implemented the change,
has represented to the Commission that it imposes no burden on competition, has aligned its rules
with those of an affiliated exchange, and has no apparent incentive to reverse or supplement that
position voluntarily at the request of a single market participant.
The problem is not self-correcting. Nearly a year after the operative date, the Auction Imbalance
Information continues to publish an Indicative Match Price of zero in the circumstance where a
real price exists, and the Exchange continues to charge for the feed. The Exchange has amended
Rule 7.35-E more than once since SR-NYSEARCA-2025-67, and none of those amendments has
restored the disseminated Indicative Match Price or added the fields requested here.7
In these circumstances, Section 19(c) rulemaking is the only mechanism that can reach the defect.
And the relief requested is narrow enough that the Commission may grant it without adjudicating any
7 See, e.g., Securities Exchange Act Release No. 34-104852 (Feb. 17, 2026) (SR-NYSEARCA-2026-15) (Auction
Reference Price calculation); Securities Exchange Act Release No. 34-105670 (June 11, 2026) (SR-NYSEARCA-202660) (election by an exchange-traded product eligible for an IPO Auction to commence trading in the Early Trading
Session). Neither amends Rule 7.35-E(a)(4), (a)(7), (a)(8)(D) or (a)(9).
11
contested question of market structure: the Commission would be requiring enriched information
in one existing field and adding two data fields to a data feed, all of them computed from values
the Exchange already maintains, and leaving every other aspect of the Exchange’s auction rules —
including the entirety of the framework adopted in SR-NYSEARCA-2025-67 — intact.
VI. Text of the Requested Amendments (Rule 192(a))
Petitioner requests that the Commission, pursuant to Section 19(c) of the Exchange Act, amend
NYSE Arca Rule 7.35-E as follows. Additions are underlined; deletions are [bracketed]. The
rule text against which these amendments are shown is the text currently in effect following
SR-NYSEARCA-2025-67.8
1. Rule 7.35-E(a)(4) — Auction Imbalance Information
(4) “Auction Imbalance Information” means the information that is disseminated by
the Exchange for an auction and includes, if applicable, the Total Imbalance,
Imbalance, Market Imbalance, Indicative Match Price, Matched Volume, Auction
Volume, Auction Reference Price, Auction Collar, Book Clearing Price, Far
Clearing Price, Imbalance Freeze Indicator, and Auction Indicator.
2. Rule 7.35-E(a)(7) — Imbalance
(7) “Imbalance” means the number of buy (sell) shares that cannot be matched with
sell (buy) shares at the Indicative Match Price at any given time and unless
otherwise specified, includes the non-displayed quantity of Reserve Orders eligible
to participate in the applicable auction. The Imbalance is disseminated as part of
the Auction Imbalance Information.
3. Rule 7.35-E(a)(8)(D) — Indicative Match Price where there is no Matched Volume
(D) If there is a BBO, but no Matched Volume, the Indicative Match Price and
Imbalance for the Auction Imbalance Information will be [set to zero]:
(i) The side of the BBO that has the higher volume; or
(ii) If the volume of the BB equals the volume of the BO, the BB.
This amendment reverses, word for word, the edit made to Rule 7.35-E(a)(8)(D) by SR-NYSEARCA2025-67, except that it substitutes the defined term “Imbalance” for “Total Imbalance” to account
for the redefinition of the latter effected by the same filing. No change is requested to Rule 7.35E(a)(8)(E), which continues to provide that, if there is no Matched Volume and Market Orders on
only one side of the market, the Indicative Match Price for the Auction Imbalance Information
will be zero, or to Rule 7.35-E(a)(8)(F), relating to rounding of the Indicative Match Price to the
minimum price variation (MPV).
4. Rule 7.35-E(a)(9) — Matched Volume; new definition of Auction Volume
8The operative text of Rule 7.35-E(a)(7), (a)(7)(A), (a)(7)(B), (a)(8)(D) and (a)(9) is reproduced from Exhibit 5 to
SR-NYSEARCA-2025-67, supra note 3. Rule 7.35-E(a)(4) was not amended by SR-NYSEARCA-2025-67; its text is
reproduced as set forth in the Commission’s notice of that filing.
12
(9) “Matched Volume” means the number of buy and sell shares that can be matched
at the Indicative Match Price at any given time, provided that, for purposes of
Auction Imbalance Information, Matched Volume means the number of buy and
sell shares that can be matched at the Auction Reference Price at any given time.
(A) “Auction Volume” means the number of buy and sell shares that can
be matched at the Indicative Match Price at any given time. The Auction
Volume is disseminated as part of the Auction Imbalance Information.
Provisions expressly not affected
For the avoidance of doubt, Petitioner does not request any change to, and the amendments above
are not intended to affect:
• the definition of Auction Reference Price in Rule 7.35-E(a)(8)(A), as amended by SRNYSEARCA-2026-15;
• the definition of Total Imbalance in Rule 7.35-E(a)(7)(A) or of Market Imbalance in Rule
7.35-E(a)(7)(B), each as amended by SR-NYSEARCA-2025-67;
• the definition of Matched Volume in Rule 7.35-E(a)(9) for purposes of the Auction Imbalance
Information;
• Rule 7.35-E(a)(8)(E) or Rule 7.35-E(a)(8)(F);
• the price at which any auction is conducted, or any aspect of auction processing under Rule
7.35-E(b) through (h);
• the validation of LOC and MOC Orders under Rule 7.35-E(d)(2)(A) or of LOO and MOO
Orders under Rule 7.35-E(e)(8)(A), each of which would continue to reference the Total
Imbalance; or
• the Trading Halt Auction extension logic under Rule 7.35-E(e)(6)(B).
VII. Related Considerations
Nomenclature. Petitioner proposes the term “Auction Volume” for the volume matchable at the
Indicative Match Price because “Matched Volume” is no longer available for that purpose. Petitioner
has no attachment to the label and would have no objection to any alternative the Commission or the
Exchange prefers, provided the underlying value — the volume matchable at the Indicative Match
Price — is disseminated.
Conforming text. Petitioner requests that any amendments the Commission adopts be conformed
to Rule 7.35-E as then in effect.
Implementation. Petitioner does not request any particular implementation deadline and would
defer to the Commission and the Exchange on a reasonable period for technical implementation and
for notice to vendors and subscribers.
VIII. Conclusion
Before SR-NYSEARCA-2025-67, NYSE Arca told the market where its auctions would clear, how
much would trade there, and what would be left over — and, when nothing yet crossed, where the
13
deepest resting interest was. Today it publishes, in that last and most important case, a price of zero
and imbalance and volume fields that are either blank or measured at a price the auction will not
use. The values that would answer a participant’s actual questions are still computed or held inside
the Exchange every second; they are simply no longer disclosed.
Petitioner respectfully requests that the Commission institute rulemaking under Section 19(c) of
the Exchange Act to adopt the amendments set forth in Part VI, so that the Auction Imbalance
Information disseminated by NYSE Arca once again describes the auction to which it relates.
We are available to provide the Commission or its staff with further detail. We thank the Commission
for its consideration of this matter.
Respectfully submitted,
Guy Pointel
Chairman of Abers Capital
Paris, France
Appendix — Comparison of Rule Text
Provision
(a)(4) Auction
Imbalance
Information
(a)(7) Imbalance
(a)(7)(A) Total
Imbalance
Before
SR-NYSEARCA2025-67
Total Imbalance,
Market Imbalance,
Indicative Match Price,
Matched Volume,
Auction Reference
Price, Auction Collar,
Book Clearing Price,
Far Clearing Price,
Imbalance Freeze
Indicator, Auction
Indicator
Unmatched shares at
the Indicative Match
Price; disseminated as
the Total Imbalance
Net Imbalance at the
Indicative Match
Price
14
Currently
in effect
Under
this petition
Unchanged by
SR-NYSEARCA2025-67
Same, plus
Imbalance and
Auction Volume
Unchanged (at the
Indicative Match
Price), but not
disseminated
Net Imbalance
calculated at the
Auction Reference
Price
Unchanged in
substance; expressly
disseminated
No change requested
Provision
Before
SR-NYSEARCA2025-67
(a)(7)(B) Market
Imbalance
Unmatched Market
Orders
(a)(8)(D) No Matched
Volume
(a)(8)(E) One-sided
Market Orders
(a)(8)(F) MPV
rounding
(a)(9) Matched
Volume
(a)(9)(A) Auction
Volume
Currently
in effect
Under
this petition
At the Indicative
No change requested
Match Price, provided
that for Auction
Imbalance
Information, at the
Auction Reference
Price
If no Matched Volume: If BBO but no
If BBO but no
Matched Volume: IMP IMP = zero
Matched Volume:
and Total Imbalance =
IMP and Imbalance
deeper side of BBO; if
= deeper side of
equal, the BB
BBO; if equal, the
BB
IMP = zero
IMP = zero
No change requested
In effect
In effect
No change requested
Matchable shares at
the Indicative Match
Price
At the Indicative
Match Price, provided
that for Auction
Imbalance
Information, at the
Auction Reference
Price
(does not exist)
No change requested
(did not exist)
15
New: matchable
shares at the
Indicative Match
Price, disseminated
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