AI Holders Summary · Q1 2026

425 institutions reported MMSI in Q1 2026. BlackRock, Inc. leads at 23.8% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(4 on this page)

#HolderValueShares% port.Quarter

BlackRock, Inc.

CIK 0002012383

$609M8.8M0.01%Q1 2026 02

Vanguard Portfolio Management

CIK 0002100121· Index

$243M3.5M0.01%Q1 2026 03

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$183M2.7M0.00%Q1 2026 04

STATE STREET CORP

CIK 0000093751

$163M2.4M0.01%Q1 2026 05

FULLER & THALER ASSET MANAGEMENT, INC.

CIK 0001082327

$146M2.1M0.49%Q1 2026 06

Conestoga Capital Advisors, LLC

CIK 0001163744

$137M2.0M2.99%Q2 2026 07

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$104M1.5M0.01%Q1 2026 08

CITADEL ADVISORS LLC

CIK 0001423053

$97M1.1M0.01%Q4 2025 09

MORGAN STANLEY

CIK 0000895421

$87M1.3M0.01%Q1 2026 10

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$85M1.2M0.02%Q1 2026 11

UBS Group AG

CIK 0001610520

$83M1.2M0.01%Q1 2026 12

Delaware Management Holdings, Inc.

CIK 0000921739

$83M1.2M0.14%Q1 2026 13

CONGRESS ASSET MANAGEMENT CO

CIK 0000897378

$82M1.2M0.51%Q2 2026 14

Greenhouse Funds LLLP

CIK 0001626220

$77M1.1M3.46%Q1 2026 15

CITIGROUP INC

CIK 0000831001

$73M1.1M0.03%Q1 2026 16

FMR LLC

CIK 0000315066

$69M1.0M0.00%Q1 2026 17

WESTWOOD HOLDINGS GROUP INC

CIK 0001165002

$65M946K0.48%Q1 2026 18

ROYAL BANK OF CANADA

CIK 0001000275

$64M921K0.01%Q1 2026 19

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

CIK 0001644956

$54M777K0.18%Q1 2026 20

Point72 Asset Management, L.P.

CIK 0001603466

$51M742K0.07%Q1 2026

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