AI Holders Summary · Q2 2026

242 institutions reported OPK in Q2 2026. Rubric Capital Management LP leads at 26.9% 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

Rubric Capital Management LP

CIK 0001687509

$72M47.8M0.66%Q2 2026 02

BlackRock, Inc.

CIK 0002012383

$55M37.0M0.00%Q2 2026 03

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$22M15.0M0.00%Q2 2026 04

Vanguard Portfolio Management

CIK 0002100121· Index

$22M14.9M0.00%Q2 2026 05

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$17M11.6M0.00%Q2 2026 06

STATE STREET CORP

CIK 0000093751

$15M10.3M0.00%Q2 2026 07

GOLDMAN SACHS GROUP INC

CIK 0000886982

$11M7.0M0.00%Q2 2026 08

UBS Group AG

CIK 0001610520

$8M5.0M0.00%Q2 2026 09

Whitefort Capital Management, LP

CIK 0001884931

$7M4.5M1.67%Q2 2026 10

NORTHERN TRUST CORP

CIK 0000073124· Index

$6M3.8M0.00%Q2 2026 11

HIGHBRIDGE CAPITAL MANAGEMENT LLC

CIK 0000919185

$5M3.6M0.13%Q2 2026 12

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

CIK 0000884546· Index

$5M3.6M0.00%Q2 2026 13

VANGUARD FIDUCIARY TRUST CO

CIK 0000933478· Index

$4M2.7M0.00%Q2 2026 14

AWM Investment Company, Inc.

CIK 0001535264

$3M2.1M0.27%Q2 2026 15

MORGAN STANLEY

CIK 0000895421

$3M2.0M0.00%Q2 2026 16

CITADEL ADVISORS LLC

CIK 0001423053

$2M1.6M0.00%Q2 2026 17

WASHINGTON GROWTH STRATEGIES LLC

CIK 0002044575

$2M1.4M1.19%Q3 2026 18

Bank of New York Mellon Corp

CIK 0001390777

$2M1.3M0.00%Q2 2026 19

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$2M1.3M0.00%Q2 2026 20

Y.D. More Investments Ltd

CIK 0001870364

$2M1.3M0.06%Q2 2026

Page 1 of 13

222 more holders available. Log in →