Route One Investment Company, L.P.
Position in TMO — Thermo Fisher Scientific Inc.
CIK 1512171
San Francisco, CA
Position in TMO
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$140,581,344
+$13,422,533 QoQ
Shares Held
280,400
+8.4% QoQ
Ownership
0.076%
of shares outstanding
% of Portfolio
5.82%
of 13F equity value
Holder Rank
#153
of 2,606 holders
Holding Since
Sep 2023
12 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026Route One Investment Company, L.P. holds $140,581,344 across 1 Diagnostics & Research name. TMO ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
This page
|
280,400 | $140,581,344 |
All Filings in TMO
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12 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $140,581,344 | 280,400 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $127,158,811 | 258,700 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $152,743,020 | 263,600 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $142,295,167 | 293,380 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $118,953,854 | 293,380 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $115,657,168 | 232,430 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $120,917,058 | 232,430 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $130,444,041 | 210,880 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $116,616,640 | 210,880 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $122,565,564 | 210,880 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $111,932,995 | 210,880 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $73,561,686 | 145,330 | Shares | Sole | 2023-11-14 | |
| No filing history on record for this holder in this stock. | ||||||