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MIAX in the 13F filings

Miami Intl HLDGS Inc · CUSIP 59356Q108

Sector · Other financial servicesTheme · Financial services· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025
Quarter end
31 Mar 2026
the date the book describes
Filed
18 May 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
27
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 2 listed it in both
Shares listed
10,873,083
combined, among listed positions
Reported value
$423m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 21 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,656,237.

Managers listing MIAX in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

27 of 27 holders

ActionFiling
Susquehanna International Group LLP3,296,346$128munder 0.1%Added+11,39415 May 2026 (the filing on sec.gov)
Citadel Advisors LLC1,607,780$63munder 0.1%Added+988,20015 May 2026 (the filing on sec.gov)
Invesco Ltd1,585,003$62munder 0.1%Added+306,03712 May 2026 (the filing on sec.gov)
Two Sigma Investments LP893,718$35munder 0.1%Added+753,38715 May 2026 (the filing on sec.gov)
Millennium Management LLC518,701$20munder 0.1%Added+234,03715 May 2026 (the filing on sec.gov)
Wellington Management Group LLP444,851$17munder 0.1%Trimmed-171,26715 May 2026 (the filing on sec.gov)
MFS Investment Management341,309$13munder 0.1%Added+67,40114 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.320,762$12munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC271,500$11munder 0.1%Added+76,40114 May 2026 (the filing on sec.gov)
Woodline Partners LP261,111$10munder 0.1%Held015 May 2026 (the filing on sec.gov)
Tudor Investment Corp259,765$10munder 0.1%Added+203,75915 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc159,186$6.2munder 0.1%Added+28,70015 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC157,683$6.1munder 0.1%Added+57,68315 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP149,904$5.8munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Soros Fund Management LLC132,600$5.2m0.06%Trimmed-21,96015 May 2026 (the filing on sec.gov)
Marshall Wace LLP122,619$4.8munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Quantbot Technologies LP96,009$3.7m0.15%Newnew13 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC85,621$3.3munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC40,222$1.6munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Walleye Capital LLC38,522$1.5munder 0.1%Added+29,05913 May 2026 (the filing on sec.gov)
AllianceBernstein LP26,300$1.2munder 0.1%Added+3,20015 May 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP29,636$1.2munder 0.1%Trimmed-71,91613 May 2026 (the filing on sec.gov)
Man Group PLC10,674$415kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd8,600$334kunder 0.1%Held018 May 2026 (the filing on sec.gov)
AQR Capital Management LLC8,476$330kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (9)

Exited (3)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
5 in Q3 2025 to 3 in Q2 2026

Tracked managers listing it, at least.

0246Q3 2025Q4 2025Q1 2026Q2 2026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
MIAX by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20255$30m50
Q4 20253$20m1512
Q1 20263$15m217
Q2 20263$97m1215

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

MIAX and V →MIAX and AXP →MIAX and BAC →Choose a stock to compare with MIAX →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own MIAX, latest filings →Back to the 13F Explorer →