AI Holders Summary · Q1 2026

328 institutions reported MCY in Q1 2026. BlackRock, Inc. leads at 21.9% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(6 on this page)

#HolderValueShares% port.Quarter

BlackRock, Inc.

CIK 0002012383

$381M4.3M0.01%Q1 2026 02

Rubric Capital Management LP

CIK 0001687509

$193M2.1M2.31%Q4 2025 03

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$189M2.1M0.04%Q1 2026 04

Vanguard Portfolio Management

CIK 0002100121· Index

$151M1.7M0.01%Q1 2026 05

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$108M1.2M0.00%Q1 2026 06

STATE STREET CORP

CIK 0000093751

$97M1.1M0.00%Q1 2026 07

DG Capital Management, LLC

CIK 0001512716

$84M949K25.63%Q1 2026 08

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$73M824K0.11%Q1 2026 09

AMERICAN CENTURY COMPANIES INC

CIK 0000748054

$72M813K0.04%Q1 2026 10

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$66M754K0.00%Q1 2026 11

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

CIK 0001164508

$51M575K0.03%Q1 2026 12

Invesco Ltd.

CIK 0000914208

$50M573K0.00%Q1 2026 13

MORGAN STANLEY

CIK 0000895421

$33M378K0.00%Q1 2026 14

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

CIK 0000884546· Index

$31M357K0.00%Q1 2026 15

JACOBS LEVY EQUITY MANAGEMENT, INC

CIK 0000884414

$31M353K0.13%Q1 2026 16

AQR CAPITAL MANAGEMENT LLC

CIK 0001167557

$31M351K0.01%Q1 2026 17

UBS Group AG

CIK 0001610520

$27M307K0.00%Q1 2026 18

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$25M289K0.02%Q1 2026 19

NORTHERN TRUST CORP

CIK 0000073124· Index

$24M270K0.00%Q1 2026 20

Philosophy Capital Management LLC

CIK 0001869199

$23M257K1.39%Q1 2026

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