Technology · owned by 2 fund managers
Who owns Thermo Fisher Scientific (TMO)?
2 of the 22 fund managers we track hold Thermo Fisher Scientific, worth $46M combined as of Q2 2026. Thomas Gayner has the biggest bet at 0.3% of the portfolio.
Ownership summary
Fund manager owners
2 / 22
1 opened new positions
Combined value
$46M
At quarter-end prices
Biggest weight
0.3%
Thomas Gayner
Buyers / sellers
2 / 0
Changes in Q2 2026
Smart money take
Why it matters
When several investors with very different styles own the same company, it’s often worth a closer look. Thermo Fisher Scientific appears in 2 of our 22 portfolios.
- Largest holder: Thomas Gayner (0.3% of portfolio)
- 2 managers bought or added this quarter
- 0 managers trimmed or sold out
- 4 congressional trades disclosed recently (1 buys, 3 sells)
- Company insiders in Q3 2026: no open-market buys, sold $62M
This is not a recommendation. Do your own research.
Fund managers who own TMO
SEC 13F · Q2 2026| Investor | % of portfolio | Activity | Shares | Value |
|---|---|---|---|---|
| Thomas Gayner Markel Group | 0.28% | Added | 73,100 | $37M |
| Stanley Druckenmiller Duquesne Family Office | 0.18% | New | 19,200 | $10M |
Congressional trades in TMOAll politician trades
| Member | Type | Amount | Traded | Disclosed |
|---|---|---|---|---|
| R Michael A. Rulli House · OH | Sell | $1,001 – $15,000 | 12 Dec 2024 | 7 Aug 2026 |
| R Alan Armstrong Senate · OK | Buy | $1,001 – $15,000 | 27 Mar 2026 | 21 Jul 2026 |
| R Dan Newhouse House · WA | Sell | $1,001 – $15,000 | 10 Jul 2026 | 17 Jul 2026 |
| D Dwight Evans House · PA | Sell | $1,001 – $15,000 | 7 May 2026 | 15 May 2026 |
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