AI Holders Summary · Q2 2026

1,594 institutions reported MRSH in Q2 2026. BlackRock, Inc. leads at 15.7% 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

$6.6B39.5M0.10%Q2 2026 02

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$5.2B31.5M0.11%Q2 2026 03

STATE STREET CORP

CIK 0000093751

$3.7B22.4M0.11%Q2 2026 04

Capital World Investors

CIK 0001422849

$3.0B18.1M0.36%Q2 2026 05

WELLINGTON MANAGEMENT GROUP LLP

CIK 0000902219

$2.8B17.0M0.49%Q2 2026 06

Capital International Investors

CIK 0001562230

$2.6B15.7M0.54%Q2 2026 07

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$2.3B13.5M0.12%Q2 2026 08

Vanguard Portfolio Management

CIK 0002100121· Index

$2.1B12.6M0.09%Q2 2026 09

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$1.9B11.0M0.22%Q1 2026 10

Capital Research Global Investors

CIK 0001422848

$1.8B11.0M0.26%Q2 2026 11

Artisan Partners Limited Partnership

CIK 0001466153

$1.2B7.3M1.92%Q2 2026 12

FMR LLC

CIK 0000315066

$1.2B7.0M0.05%Q2 2026 13

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

CIK 0000912938

$1.1B6.5M0.35%Q2 2026 14

MORGAN STANLEY

CIK 0000895421

$1.1B6.3M0.06%Q2 2026 15

NORGES BANK

CIK 0001374170· Sovereign

$1.0B6.3M0.10%Q2 2026 16

AMERIPRISE FINANCIAL INC

CIK 0000820027

$922M5.5M0.19%Q2 2026 17

HARRIS ASSOCIATES L P

CIK 0000813917

$897M5.2M1.19%Q1 2026 18

NORTHERN TRUST CORP

CIK 0000073124· Index

$815M4.9M0.09%Q2 2026 19

JPMORGAN CHASE & CO

CIK 0000019617

$789M4.7M0.04%Q2 2026 20

Clearbridge Investments, LLC

CIK 0001348883

$784M4.7M0.65%Q2 2026

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