AI Holders Summary · Q1 2026

179 institutions reported ATEX in Q1 2026. Owl Creek Asset Management, L.P. leads at 19.1% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(7 on this page)

#HolderValueShares% port.Quarter

Owl Creek Asset Management, L.P.

CIK 0001313756

$207M5.4M14.95%Q1 2026 02

Heard Capital LLC

CIK 0001796409

$177M1.7M7.56%Q2 2026 03

BlackRock, Inc.

CIK 0002012383

$111M1.1M0.00%Q2 2026 04

Jupiter Topco LLC

CIK 0002146052

$68M662K0.03%Q2 2026 05

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$57M553K0.00%Q2 2026 06

PLUSTICK MANAGEMENT LLC

CIK 0001643351

$54M520K19.90%Q2 2026 07

STATE STREET CORP

CIK 0000093751

$51M496K0.00%Q2 2026 08

GAMCO INVESTORS, INC. ET AL

CIK 0000807249

$43M416K0.38%Q2 2026 09

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$40M388K0.00%Q2 2026 10

QVT Financial LP

CIK 0001290162

$40M384K2.32%Q2 2026 11

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$38M371K0.01%Q2 2026 12

FMR LLC

CIK 0000315066

$38M370K0.00%Q2 2026 13

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$30M287K0.00%Q2 2026 14

GABELLI FUNDS LLC

CIK 0001081407

$29M279K0.18%Q2 2026 15

Invesco Ltd.

CIK 0000914208

$21M201K0.00%Q2 2026 16

JANE STREET GROUP, LLC

CIK 0001595888· Market maker

$18M459K0.00%Q1 2026 17

Vanguard Portfolio Management

CIK 0002100121· Index

$16M158K0.00%Q2 2026 18

GARNET EQUITY CAPITAL HOLDINGS, INC.

CIK 0001423876

$16M156K3.03%Q2 2026 19

GOLDMAN SACHS GROUP INC

CIK 0000886982

$14M139K0.00%Q2 2026 20

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

CIK 0000884546· Index

$14M139K0.00%Q2 2026

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