13F Insight
DOSSIER · 13F Holders · Q2 2026Healthcare · Industrial Instruments For Measurement, Display, and Control
MKSI

MKS INC.

791 institutions still hold MKS INC. as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 55306N104·Industrial Instruments For Measurement, Display, and Control·791 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$18.3B
visible holders
Holders
791
filers reporting
Concentration
16.85%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

791 institutions reported MKSI in Q2 2026. BlackRock, Inc. leads at 16.9% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$3.1B6.9M0.05%Q2 202602
Invesco Ltd.
CIK 0000914208
$2.1B4.7M0.16%Q2 202603
Vanguard Portfolio Management
CIK 0002100121· Index
$1.6B3.7M0.07%Q2 202604
JPMORGAN CHASE & CO
CIK 0000019617
$1.4B3.4M0.08%Q2 202605
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$1.4B3.0M0.03%Q2 202606
STATE STREET CORP
CIK 0000093751
$949M2.1M0.03%Q2 202607
Capital International Investors
CIK 0001562230
$852M1.9M0.18%Q2 202608
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$687M1.5M0.04%Q2 202609
FMR LLC
CIK 0000315066
$667M1.5M0.03%Q2 202610
UBS Group AG
CIK 0001610520
$648M1.5M0.08%Q2 202611
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$630M1.4M0.11%Q2 202612
Capital World Investors
CIK 0001422849
$608M1.4M0.07%Q2 202613
Whale Rock Capital Management LLC
CIK 0001387322
$566M1.3M4.54%Q2 202614
Neuberger Berman Group LLC
CIK 0001465109
$518M1.2M0.34%Q2 202615
NOMURA HOLDINGS INC
CIK 0001163653
$512M1.2M0.60%Q2 202616
ALKEON CAPITAL MANAGEMENT LLC
CIK 0001230239
$477M1.1M0.64%Q2 202617
NORGES BANK
CIK 0001374170· Sovereign
$425M955K0.04%Q2 202618
WESTFIELD CAPITAL MANAGEMENT CO LP
CIK 0001177719
$413M929K1.35%Q2 202619
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$391M1.7M0.05%Q1 202620
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$383M860K0.03%Q2 2026
Page 1 of 40
771 more holders available. Log in →
Insiders at MKS INC.
Donlan Renee Martel →Lee John Tseng-Chung →Williams John Edward →Schreiner James Alan →Mccarthy Michelle M →Henry David Philip →Mora Elizabeth →Colella Gerald G →