Thermo Fisher Scientific Inc. (TMO) ownership: Top institutional holder: VANGUARD GROUP INC ($19.78B). Insider activity: Net Seller (1 buys, 19 sells). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 34133702.00 | $19.78B | 2025-12-31 |
| BlackRock, Inc. | 30450692.00 | $14.97B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 24280816.00 | $11.93B | 2026-03-31 |
| STATE STREET CORP | 16731668.00 | $8.23B | 2026-03-31 |
| MORGAN STANLEY | 10863528.00 | $5.34B | 2026-03-31 |
| FMR LLC | 10776436.00 | $5.30B | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 8407891.00 | $4.11B | 2026-03-31 |
| FRANKLIN RESOURCES INC | 6813031.00 | $3.35B | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Buy | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.