AI Holders Summary · Q1 2026

160 institutions reported PUBM in Q1 2026. BlackRock, Inc. leads at 14.9% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(5 on this page)

#HolderValueShares% port.Quarter

BlackRock, Inc.

CIK 0002012383

$25M3.1M0.00%Q1 2026 02

CenterBook Partners LP

CIK 0001872738

$14M1.7M0.77%Q1 2026 03

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$13M1.6M0.00%Q1 2026 04

ACADIAN ASSET MANAGEMENT LLC

CIK 0000916542

$13M1.6M0.02%Q1 2026 05

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$13M1.5M0.02%Q1 2026 06

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$10M1.2M0.00%Q1 2026 07

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$8M999K0.00%Q1 2026 08

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$8M951K0.00%Q1 2026 09

JACOBS LEVY EQUITY MANAGEMENT, INC

CIK 0000884414

$8M932K0.03%Q1 2026 10

STATE STREET CORP

CIK 0000093751

$6M791K0.00%Q1 2026 11

ROYAL BANK OF CANADA

CIK 0001000275

$6M740K0.00%Q1 2026 12

Walleye Trading LLC

CIK 0001388391

$6M714K0.01%Q1 2026 13

Whitefort Capital Management, LP

CIK 0001884931

$6M690K1.66%Q1 2026 14

S Squared Technology, LLC

CIK 0001322924

$6M676K2.09%Q1 2026 15

CITADEL ADVISORS LLC

CIK 0001423053

$5M595K0.00%Q4 2025 16

Vanguard Portfolio Management

CIK 0002100121· Index

$5M639K0.00%Q1 2026 17

D. E. Shaw & Co., Inc.

CIK 0001009207

$5M546K0.00%Q4 2025 18

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$4M534K0.00%Q1 2026 19

Simcoe Capital LLC

CIK 0002109203

$4M486K3.65%Q1 2026 20

Trexquant Investment LP

CIK 0001633445

$3M422K0.02%Q1 2026

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