13F Insight
DOSSIER · 13F Holders · Q1 2026Healthcare · Measuring & Controlling Devices, NECCheap mega-capRe-rated
TMO

THERMO FISHER SCIENTIFIC INC

2,751 institutions still hold THERMO FISHER SCIENTIFIC INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 883556102·Measuring & Controlling Devices, NEC·2,751 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 0.8%
vs prior quarter
13F value held
$81.8B
61.0% inst. owned
of float
Holders
2,751
+99 QoQ
filers reporting
Activity
+21 / −72
+901 added · −835 reduced
this quarter
Concentration
18.30%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

2,751 institutions reported TMO in Q1 2026. BlackRock, Inc. leads at 18.3% of the visible book. +99 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$15.0B30.5M0.26%Q1 202602
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$11.9B24.3M0.30%Q1 202603
STATE STREET CORP
CIK 0000093751
$8.2B16.7M0.28%Q1 202604
MORGAN STANLEY
CIK 0000895421
$5.3B10.9M0.32%Q1 202605
FMR LLC
CIK 0000315066
$5.3B10.8M0.28%Q1 202606
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$4.1B8.4M0.26%Q1 202607
FRANKLIN RESOURCES INC
CIK 0000038777
$3.3B6.8M0.82%Q1 202608
Capital World Investors
CIK 0001422849
$3.3B6.6M0.45%Q1 202609
JPMORGAN CHASE & CO
CIK 0000019617
$3.3B6.8M0.21%Q1 202610
Vanguard Portfolio Management
CIK 0002100121
$3.0B6.2M0.16%Q1 202611
BANK OF AMERICA CORP /DE/
CIK 0000070858
$2.7B5.5M0.20%Q1 202612
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
CIK 0000912938
$2.3B3.0M0.76%Q1 202613
Capital Research Global Investors
CIK 0001422848
$2.2B4.4M0.34%Q1 202614
ROYAL BANK OF CANADA
CIK 0001000275
$1.9B3.9M0.34%Q1 202615
Capital International Investors
CIK 0001562230
$1.9B3.9M0.45%Q1 202616
Bank of New York Mellon Corp
CIK 0001390777
$1.9B3.8M0.34%Q1 202617
NORTHERN TRUST CORP
CIK 0000073124· Index
$1.7B3.4M0.22%Q1 202618
GOLDMAN SACHS GROUP INC
CIK 0000886982
$1.6B3.3M0.18%Q1 202619
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$1.4B2.9M0.22%Q1 202620
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main
CIK 0001694217
$1.4B2.9M1.27%Q1 2026
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