Position in TMO
as of Jun 30, 2026
· filed Jul 29, 2026
Position Value
$401,088
-$41,289 QoQ
Shares Held
800
-11.1% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#1,887
of 2,617 holders
Holding Since
Mar 2020
26 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, 2026Main Street Research LLC holds $716,952 across 2 Diagnostics & Research names. TMO ranks #1 (55.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
This page
|
800 | $401,088 | |
| 2 | IDXX |
Idexx Laboratories Inc /De
|
600 | $315,864 |
All Filings in TMO
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26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $401,088 | 800 | Shares | Sole | 2026-07-29 | |
| 2026-03-31 | $442,377 | 900 | Shares | Sole | 2026-04-30 | |
| 2025-12-31 | $666,946 | 1,151 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $483,079 | 996 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $372,212 | 918 | Shares | Sole | 2025-08-05 | |
| 2025-03-31 | $623,990 | 1,254 | Shares | Sole | 2025-04-30 | |
| 2024-12-31 | $860,460 | 1,654 | Shares | Sole | 2025-02-07 | |
| 2024-09-30 | $1,062,703 | 1,718 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $859,915 | 1,555 | Shares | Sole | 2024-07-29 | |
| 2024-03-31 | $932,842 | 1,605 | Shares | Sole | 2024-05-01 | |
| 2023-12-31 | $754,783 | 1,422 | Shares | Sole | 2024-01-30 | |
| 2023-09-30 | $609,428 | 1,204 | Shares | Sole | 2023-11-03 | |
| 2023-06-30 | $653,752 | 1,253 | Shares | Sole | 2023-08-08 | |
| 2023-03-31 | $725,649 | 1,259 | Shares | Sole | 2023-05-01 | |
| 2022-12-31 | $730,214 | 1,326 | Shares | Sole | 2023-02-06 | |
| 2022-09-30 | $695,864 | 1,372 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $699,201 | 1,287 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $807,418 | 1,367 | Shares | Sole | 2022-05-05 | |
| 2021-12-31 | $914,118 | 1,370 | Shares | Sole | 2022-02-09 | |
| 2021-09-30 | $831,285 | 1,455 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $711,807 | 1,411 | Shares | Sole | 2021-08-06 | |
| 2021-03-31 | $675,898 | 1,481 | Shares | Sole | 2021-05-07 | |
| 2020-12-31 | $669,791 | 1,438 | Shares | Sole | 2021-02-12 | |
| 2020-09-30 | $604,440 | 1,369 | Shares | Sole | 2020-11-10 | |
| 2020-06-30 | $506,551 | 1,398 | Shares | Sole | 2020-07-29 | |
| 2020-03-31 | $482,403 | 1,701 | Shares | Sole | 2020-05-01 | |
| No filing history on record for this holder in this stock. | ||||||