Thermo Fisher Scientific Inc.
TMO- Exchange
- NYSE
- Industry
- Measuring & Controlling Devices, NEC
- SEC CIK
- 0000097745
In the last 90 days, Thermo Fisher Scientific Inc. insiders filed 0 open-market purchases and 11 sales; 2,627 institutions reported holding it in 13F filings for Q2 2026, worth $169.2B in total; 6 superinvestors hold it, including Viking Global Investors and D1 Capital Partners.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $61.6M in total
- 11
- 13F holdersQ2 2026, +52 vs. previous quarter
- 2,627
- 13F valueReported value at the end of Q2 2026
- $169.2B
- Superinvestors holdingAt the end of Q2 2026
- 6
Price chart
Superinvestors holding TMO, Q2 2026
6 superinvestors report holding Thermo Fisher Scientific Inc. on Form 13F. Percentages are the stock's share of each portfolio.
Viking Global Investors
Andreas Halvorsen
2.8%
Thermo Fisher Scientific Inc.'s share of the portfolio
- Shares
- 1,937,415
- Value
- $971.3M
D1 Capital Partners
Dan Sundheim
1.2%
Thermo Fisher Scientific Inc.'s share of the portfolio
- Shares
- 817,123
- Value
- $409.7M
| Superinvestor | Weight | Value |
|---|---|---|
| Lindsell Train | 9.8% | $258.0M |
| Weitz Investment Management | 4.0% | $57.8M |
| Markel Group | 0.3% | $36.6M |
| Duquesne Family Office | 0.2% | $9.63M |
Latest insider trades
Open-market purchases and sales by Thermo Fisher Scientific Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2026 (view filing)4:10 PM ET | Aug 31 | 1 day | Pettiti GianlucaPresident & COO | SSale | −4.13K | $614.38 | −$2.54M | −15.1%23.2K after | 2 lots10b5-1 |
| Aug 26, 2026 (view filing)4:01 PM ET | Aug 24 | 2 days | Casper Marc NChairman & CEO | SSale | −275 | $627.05 | −$172.4K | −0.2%123.9K after | 4 lots10b5-1 |
| Aug 24, 2026 (view filing)4:02 PM ET | Aug 20-21 | 4 days | Casper Marc NChairman & CEO | SSale | −20.0K | $628.09 | −$12.6M | −13.9%123.9K after | 14 lots10b5-1 |
| Aug 20, 2026 (view filing)4:02 PM ET | Aug 19 | 1 day | Britt Lisa P.Sr. VP and Chief HR Officer | SSale | −11.4K | $613.12 | −$7.01M | −43.6%14.8K after | |
| Aug 13, 2026 (view filing)4:01 PM ET | Aug 11 | 2 days | Shafer Michael DExecutive Vice President | SSale | −25.5K | $600.00 | −$15.3M | −54.8%21.0K after | 2 lots10b5-1 |
| Aug 10, 2026 (view filing)4:09 PM ET | Aug 7 | 3 days | Holmes Joseph R.VP & Chief Accounting Officer | SSale | −420 | $584.81 | −$245.6K | −12.4%2.97K after | |
| Aug 10, 2026 (view filing)4:09 PM ET | Aug 7 | 3 days | Casper Marc NChairman & CEO | SSale | −275 | $586.10 | −$161.2K | −0.2%123.9K after | 15 lots10b5-1 |
| Aug 10, 2026 (view filing)4:09 PM ET | Aug 7 | 3 days | Casper Marc NChairman & CEO | SSale | −4.61K | $586.12 | −$2.70M | −100.0%0 after | 12 lots10b5-1 |
| Aug 7, 2026 (view filing)5:32 PM ET | Aug 6 | 1 day | Britt Lisa P.Sr. VP and Chief HR Officer | SSale | −5.85K | $580.00 | −$3.39M | −28.4%14.8K after | |
| Aug 7, 2026 (view filing)5:26 PM ET | Aug 6 | 1 day | Casper Marc NChairman & CEO | SSale | −10.0K | $574.47 | −$5.74M | −7.5%123.9K after | 9 lots10b5-1 |
Top 10 13F holders, Q2 2026
The largest institutional positions in Thermo Fisher Scientific Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 30,919,632 | $15.5B | 0.23% | +492,440+1.6% | Added |
| Vanguard Capital Management LLC | 24,276,316 | $12.2B | 0.26% | −4,5000.0% | Reduced |
| State Street Corp | 16,825,879 | $8.44B | 0.25% | +94,211+0.6% | Added |
| FMR LLC | 14,084,488 | $7.06B | 0.31% | +3,308,052+30.7% | Added |
| Morgan Stanley | 10,763,066 | $5.40B | 0.29% | −100,462−0.9% | Reduced |
| JPMorgan Chase & Co | 8,503,527 | $4.31B | 0.25% | +1,708,045+25.1% | Added |
| Geode Capital Management, LLC | 8,382,401 | $4.18B | 0.22% | −25,490−0.3% | Reduced |
| Franklin Resources Inc | 7,271,514 | $3.65B | 0.79% | +458,483+6.7% | Added |
| Vanguard Portfolio Management LLC | 6,226,169 | $3.12B | 0.14% | +62,799+1.0% | Added |
| Capital World Investors | 6,195,370 | $3.11B | 0.37% | −450,946−6.8% | Reduced |