DOSSIER · 13F Holders · Q1 2026Healthcare · Industrial Instruments For Measurement, Display, and Control
MKSI

MKS INC.

640 institutions still hold MKS INC. as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 55306N104·Industrial Instruments For Measurement, Display, and Control·640 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$9.5B
visible holders
Holders
640
filers reporting
Concentration
16.06%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

640 institutions reported MKSI in Q1 2026. BlackRock, Inc. leads at 16.1% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$1.5B6.6M0.03%Q1 2026
02
Invesco Ltd.
CIK 0000914208
$855M3.7M0.13%Q1 2026
03
Vanguard Portfolio Management
CIK 0002100121· Index
$847M3.7M0.04%Q1 2026
04
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$693M3.0M0.02%Q1 2026
05
STATE STREET CORP
CIK 0000093751
$473M2.1M0.02%Q1 2026
06
Capital International Investors
CIK 0001562230
$452M2.0M0.11%Q1 2026
07
FMR LLC
CIK 0000315066
$444M1.9M0.02%Q1 2026
08
JPMORGAN CHASE & CO
CIK 0000019617
$441M2.1M0.03%Q1 2026
09
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$421M1.8M0.08%Q1 2026
10
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$391M1.7M0.05%Q1 2026
11
Point72 Asset Management, L.P.
CIK 0001603466
$370M1.6M0.47%Q1 2026
12
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$354M1.5M0.02%Q1 2026
13
Aspex Management (HK) Ltd
CIK 0001768375
$354M1.5M5.13%Q1 2026
14
Neuberger Berman Group LLC
CIK 0001465109
$329M1.4M0.25%Q1 2026
15
UBS Group AG
CIK 0001610520
$308M1.3M0.05%Q1 2026
16
Whale Rock Capital Management LLC
CIK 0001387322
$300M1.3M3.88%Q1 2026
17
Capital World Investors
CIK 0001422849
$294M1.3M0.04%Q1 2026
18
WESTFIELD CAPITAL MANAGEMENT CO LP
CIK 0001177719
$241M1.0M1.01%Q1 2026
19
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$206M894K0.09%Q1 2026
20
VICTORY CAPITAL MANAGEMENT INC
CIK 0001040188
$202M879K0.13%Q1 2026
Page 1 of 32
620 more holders available. Log in →
Insiders at MKS INC.
Schreiner James AlanMccarthy Michelle MHenry David PhilipMora ElizabethColella Gerald GDonahue Joseph BLee John Tseng-ChungMayampurath Ramakumar