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Thermo Fisher Scientific

2,558 hedge funds and large institutions have $164B invested in Thermo Fisher Scientific in 2026 Q1 according to their latest regulatory filings, with 166 funds opening new positions, 961 increasing their positions, 1,079 reducing their positions, and 228 closing their positions.

New
Increased
Maintained
Reduced
Closed

less funds holding

Funds holding:

less ownership

Funds ownership:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less first-time investments, than exits

New positions opened: | Existing positions closed:

28% less call options, than puts

Call options by funds: $903M | Put options by funds: $1.26B

29% less capital invested

Capital invested by funds: $231B → $164B (-$67.1B)

33% less funds holding in top 10

Funds holding in top 10: 11275 (-37)

Holders
2,558
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
75
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$903M
Puts
$1.26B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
California Public Employees Retirement System
76
California Public Employees Retirement System
California
$342M
BNP Paribas Financial Markets
77
BNP Paribas Financial Markets
France
$327M
LP
78
Longview Partners
Guernsey
$326M
Janus Henderson Group
79
Janus Henderson Group
United Kingdom
$325M
VAM
80
Vanguard Asset Management
$321M
Stifel Financial
81
Stifel Financial
Missouri
$319M
CBU
82
CIBC Bancorp USA
Illinois
$317M
BNP Paribas Asset Management
83
BNP Paribas Asset Management
France
$315M
Ninety One (UK)
84
Ninety One (UK)
United Kingdom
$313M
Handelsbanken Fonder
85
Handelsbanken Fonder
Sweden
$312M
Robeco Institutional Asset Management
86
Robeco Institutional Asset Management
Netherlands
$312M
Arrowstreet Capital
87
Arrowstreet Capital
Massachusetts
$312M
Victory Capital Management
88
Victory Capital Management
Texas
$309M
Principal Financial Group
89
Principal Financial Group
Iowa
$307M
LT
90
Lindsell Train
United Kingdom
$303M
MU
91
Mirova US
Massachusetts
$302M
Envestnet Asset Management
92
Envestnet Asset Management
Illinois
$301M
RhumbLine Advisers
93
RhumbLine Advisers
Massachusetts
$301M
Vontobel Holding
94
Vontobel Holding
Switzerland
$296M
CWG
95
C WorldWide Group
Denmark
$291M
BMSSC
96
B. Metzler seel. Sohn & Co
Germany
$286M
Bank of Montreal
97
Bank of Montreal
Ontario, Canada
$285M
Citigroup
98
Citigroup
New York
$281M
California State Teachers Retirement System (CalSTRS)
99
California State Teachers Retirement System (CalSTRS)
California
$281M
Canada Pension Plan Investment Board
100
Canada Pension Plan Investment Board
Ontario, Canada
$276M