13F Insight
DOSSIER · 13F Holders · Q1 2026Defensive growthQuality
MIAX

MIAMI INTL HLDGS INC

206 institutions still hold MIAMI INTL HLDGS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 59356Q108·206 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 9.9%
vs prior quarter
13F value held
$1.1B
76.0% inst. owned
of float
Holders
206
+2 QoQ
filers reporting
Activity
+55 / −34
+777 added · −821 reduced
this quarter
Concentration
12.99%
SUSQUEHANNA INTERNATIONAL GROUP, LLP #1
top holder share
AI Holders Summary · Q1 2026

206 institutions reported MIAX in Q1 2026. SUSQUEHANNA INTERNATIONAL GROUP, LLP leads at 13.0% of the visible book. +2 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$141M3.6M0.02%Q1 202602
HORIZON KINETICS ASSET MANAGEMENT LLC
CIK 0001056823
$134M3.5M1.46%Q1 202603
BlackRock, Inc.
CIK 0002012383
$87M2.2M0.00%Q1 202604
Invesco Ltd.
CIK 0000914208
$62M1.6M0.01%Q1 202605
Alyeska Investment Group, L.P.
CIK 0001453072
$57M1.3M0.16%Q4 202506
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$55M1.4M0.00%Q1 202607
Vanguard Portfolio Management
CIK 0002100121
$54M1.4M0.00%Q1 202608
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
$49M1.2M0.07%Q1 202609
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$48M1.2M0.02%Q1 202610
JPMORGAN CHASE & CO
CIK 0000019617
$46M1.2M0.00%Q1 202611
MORGAN STANLEY
CIK 0000895421
$45M1.1M0.00%Q1 202612
Allspring Global Investments Holdings, LLC
CIK 0001890906
$44M1.1M0.07%Q1 202613
North Reef Capital Management LP
CIK 0001867831
$39M1.0M1.36%Q1 202614
Ghisallo Capital Management LLC
CIK 0001825214
$39M1.0M1.07%Q1 202615
BANK OF AMERICA CORP /DE/
CIK 0000070858
$35M901K0.00%Q1 202616
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$35M894K0.03%Q1 202617
CITADEL ADVISORS LLC
CIK 0001423053
$31M691K0.00%Q4 202518
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$30M780K0.00%Q1 202619
STATE STREET CORP
CIK 0000093751
$28M712K0.00%Q1 202620
BLAIR WILLIAM & CO/IL
CIK 0000902367
$26M666K0.07%Q1 2026
Page 1 of 11
186 more holders available. Log in →