TMO
Thermo Fisher Sc (TMO)
NYSE
$469.21+$5.20 (+1.12%)
Price as of Jun 23, 2026 5:28 PM EDT
  • $172.4B
    Market Cap
  • 16.36%
    1-Year Change
  • Diagnostics & Research
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
9.19%
34.1M
+288,296 (+0.84%)
Dec 31, 2025
J. STERN & CO. LLP
8.48%
31.5M
+31.5M (+99.83%)
Dec 31, 2025
BLACKROCK, INC.
8.19%
30.4M
-250,693 (-0.82%)
Mar 31, 2026
BLACKROCK INC.
7.95%
29.5M
+549,482 (+1.86%)
Jun 30, 2024
BLACKROCK FUNDING, INC. /DE
7.76%
28.8M
-321,216 (-1.11%)
Dec 31, 2024
N/A
6.53%
24.3M
+24.3M (+100.00%)
Mar 31, 2026
STATE STREET CORP
4.50%
16.7M
+117,907 (+0.70%)
Mar 31, 2026

Current Ownership Distribution

  • Mutual Funds7.0B (53.62%)
  • Institutions6.1B (46.37%)
  • Insiders1.7M (0.01%)
  • Other0 (0.00%)

Insider Transactions

  • 0.01% (1.7M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 6
    Number of InsiderSelling (last 12 months)
  • $4.5B
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
JOHNSON JENNIFER M
Award
Mar 28, 2026
$0.00
66
$0.00
661
SPERLING SCOTT M
Award
Mar 28, 2026
$0.00
90
$0.00
17,592
WEISLER DION J
Award
Mar 28, 2026
$0.00
79
$0.00
2,718
Shafer Michael D
Executive Vice President
Sell
Mar 11, 2026
$802,535.80
1,607
$499.40
20,950
CASPER MARC N
Chairman & CEO
Exempt
Mar 05, 2026
$0.00
4,000
$0.00
40,550
CASPER MARC N
Chairman & CEO
Exempt
Mar 05, 2026
$1.2M
4,000
$309.63
127,925
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$10,073.20
20
$503.66
127,905
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$30,345.60
60
$505.76
127,845
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$29,437.32
58
$507.54
127,787
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$50,456.34
99
$509.66
127,688
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$109,520.92
214
$511.78
127,474
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$210,732.03
411
$512.73
127,063
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$582,033.43
1,133
$513.71
125,930
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$293,384.70
570
$514.71
125,360
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$179,442.72
348
$515.64
125,012
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$103,862.73
201
$516.73
124,811
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$54,889.98
106
$517.83
124,705
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$267,871.08
516
$519.13
124,189
CASPER MARC N
Chairman & CEO
Sell
Mar 05, 2026
$137,211.36
264
$519.74
123,925
CASPER MARC N
Chairman & CEO
Exempt
Mar 04, 2026
$0.00
5,000
$0.00
44,550
CASPER MARC N
Chairman & CEO
Exempt
Mar 04, 2026
$1.5M
5,000
$309.63
128,925
CASPER MARC N
Chairman & CEO
Sell
Mar 04, 2026
$227,920.83
447
$509.89
128,478
CASPER MARC N
Chairman & CEO
Sell
Mar 04, 2026
$346,261.38
678
$510.71
127,800
CASPER MARC N
Chairman & CEO
Sell
Mar 04, 2026
$701,166.00
1,370
$511.80
126,430
CASPER MARC N
Chairman & CEO
Sell
Mar 04, 2026
$636,533.72
1,241
$512.92
125,189
CASPER MARC N
Chairman & CEO
Sell
Mar 04, 2026
$418,608.45
815
$513.63
124,374
CASPER MARC N
Chairman & CEO
Sell
Mar 04, 2026
$109,150.32
212
$514.86
124,162
CASPER MARC N
Chairman & CEO
Sell
Mar 04, 2026
$61,376.63
119
$515.77
124,043
CASPER MARC N
Chairman & CEO
Sell
Mar 04, 2026
$60,976.50
118
$516.75
123,925
CASPER MARC N
Chairman & CEO
Exempt
Mar 03, 2026
$1.5M
5,000
$309.63
128,925