Thermo Fisher Scientific Inc (TMO)
Who owns Thermo Fisher Scientific Inc (TMO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.7% of the shares are freely tradable; institutional investors hold 94.2%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Group Inc | 9.19 | 34,133,702 | +0.9 | 12/31/2025 |
| BlackRock Inc | 8.19 | 30,427,192 | -0.8 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.53 | 24,280,816 | +0.0 | 03/31/2026 |
| State Street Corp | 4.50 | 16,731,668 | +0.7 | 03/31/2026 |
| Morgan Stanley - Brokerage Accounts | 2.92 | 10,863,528 | -8.7 | 03/31/2026 |
| FMR Inc | 2.90 | 10,776,436 | +10.0 | 03/31/2026 |
| Geode Capital Management, LLC | 2.26 | 8,407,891 | +2.6 | 03/31/2026 |
| Franklin Resources Inc | 1.83 | 6,813,031 | +7.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 3.19 | 11,838,388 | +0.3 | 04/30/2026 |
| Vanguard 500 Index Investor | 2.62 | 9,741,982 | +1.8 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 27. Jul 2026 | Pettiti Gianluca | President & COO | Sell | 400 | 565.00 | 226,000 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.