Position in TMO
as of Jun 30, 2026
· filed Aug 3, 2026
Position Value
$326,373,326
+$45,131,168 QoQ
Shares Held
650,976
+13.8% QoQ
Ownership
0.176%
of shares outstanding
% of Portfolio
0.17%
of 13F equity value
Holder Rank
#80
of 2,606 holders
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Derivatives in TMO
reported options exposure · as of Jun 30, 2026CallValue
$7,219,584
CallShares
14,400
PutValue
$5,264,280
PutShares
10,500
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026CITIGROUP INC holds $1,355,830,348 across 36 Diagnostics & Research names. TMO ranks #1 (24.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
This page
|
650,976 | $326,373,326 | |
| 2 | DHR |
Danaher Corp /De/
|
778,298 | $148,250,202 | |
| 3 | MTD |
Mettler Toledo International Inc/
|
90,754 | $115,939,141 | |
| 4 | IDXX |
Idexx Laboratories Inc /De
|
165,689 | $87,225,316 | |
| 5 | ILMN |
Illumina, Inc.
|
465,311 | $81,815,632 | |
| 6 | WAT |
Waters Corp /De/
|
213,227 | $79,968,652 | |
| 7 | CRL |
Charles River Laboratories International, Inc.
|
316,217 | $71,714,852 | |
| 8 | DGX |
Quest Diagnostics Inc
|
315,584 | $66,888,027 |
All Filings in TMO
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $5,264,280 | 10,500 | Put | Defined | 2026-08-03 | |
| 2026-06-30 | $7,219,584 | 14,400 | Call | Defined | 2026-08-03 | |
| 2026-06-30 | $326,373,326 | 650,976 | Shares | Defined | 2026-08-03 | |
| 2026-03-31 | $12,189,944 | 24,800 | Put | Defined | 2026-05-11 | |
| 2026-03-31 | $7,078,032 | 14,400 | Call | Defined | 2026-05-11 | |
| 2026-03-31 | $281,242,158 | 572,177 | Shares | Defined | 2026-05-11 | |
| 2025-12-31 | $311,040,645 | 536,786 | Shares | Defined | 2026-02-13 | |
| 2025-12-31 | $11,646,945 | 20,100 | Put | Defined | 2026-02-13 | |
| 2025-12-31 | $10,372,155 | 17,900 | Call | Defined | 2026-02-13 | |
| 2025-09-30 | $363,546,253 | 749,549 | Shares | Defined | 2025-11-10 | |
| 2025-09-30 | $6,111,252 | 12,600 | Call | Defined | 2025-11-10 | |
| 2025-09-30 | $21,389,382 | 44,100 | Put | Defined | 2025-11-10 | |
| 2025-06-30 | $341,930,496 | 843,315 | Shares | Defined | 2025-08-11 | |
| 2025-06-30 | $48,695,746 | 120,100 | Put | Defined | 2025-08-11 | |
| 2025-06-30 | $15,285,842 | 37,700 | Call | Defined | 2025-08-11 | |
| 2025-03-31 | $24,730,720 | 49,700 | Put | Defined | 2025-05-12 | |
| 2025-03-31 | $4,030,560 | 8,100 | Call | Defined | 2025-05-12 | |
| 2025-03-31 | $510,235,554 | 1,025,393 | Shares | Defined | 2025-05-12 | |
| 2024-12-31 | $408,019,507 | 784,306 | Shares | Defined | 2025-02-12 | |
| 2024-12-31 | $7,959,519 | 15,300 | Call | Defined | 2025-02-12 | |
| 2024-12-31 | $48,277,344 | 92,800 | Put | Defined | 2025-02-12 | |
| 2024-09-30 | $37,547,199 | 60,700 | Put | Defined | 2024-11-12 | |
| 2024-09-30 | $8,969,265 | 14,500 | Call | Defined | 2024-11-12 | |
| 2024-09-30 | $430,160,379 | 695,411 | Shares | Defined | 2024-11-12 | |
| 2024-06-30 | $619,754,289 | 1,120,713 | Shares | Defined | 2024-08-12 | |
| 2024-06-30 | $11,613,000 | 21,000 | Call | Defined | 2024-08-12 | |
| 2024-06-30 | $36,442,700 | 65,900 | Put | Defined | 2024-08-12 | |
| 2024-03-31 | $14,588,371 | 25,100 | Call | Defined | 2024-05-10 | |
| 2024-03-31 | $591,425,345 | 1,017,576 | Shares | Defined | 2024-05-10 | |
| 2024-03-31 | $45,450,622 | 78,200 | Put | Defined | 2024-05-10 | |
| 2023-12-31 | $522,941,735 | 985,214 | Shares | Defined | 2024-02-09 | |
| 2023-12-31 | $53,609,790 | 101,000 | Put | Defined | 2024-02-09 | |
| 2023-12-31 | $47,930,337 | 90,300 | Call | Defined | 2024-02-09 | |
| 2023-06-30 | $306,587,080 | 587,613 | Shares | Defined | 2023-08-10 | |
| 2023-06-30 | $34,905,075 | 66,900 | Put | Defined | 2023-08-10 | |
| 2023-06-30 | $29,635,400 | 56,800 | Call | Defined | 2023-08-10 | |
| 2023-03-31 | $441,554,748 | 766,096 | Shares | Defined | 2023-05-11 | |
| 2023-03-31 | $35,677,303 | 61,900 | Put | Defined | 2023-05-11 | |
| 2023-03-31 | $57,464,089 | 99,700 | Call | Defined | 2023-05-11 | |
| 2022-12-31 | $420,885,204 | 764,287 | Shares | Defined | 2023-02-09 | |
| 2022-12-31 | $27,864,914 | 50,600 | Put | Defined | 2023-02-09 | |
| 2022-12-31 | $34,583,332 | 62,800 | Call | Defined | 2023-02-09 | |
| 2022-09-30 | $9,535,172 | 18,800 | Call | Defined | 2022-11-10 | |
| 2022-09-30 | $410,771,656 | 809,897 | Shares | Defined | 2022-11-10 | |
| 2022-09-30 | $12,629,031 | 24,900 | Put | Defined | 2022-11-10 | |
| 2022-06-30 | $423,206,967 | 778,985 | Shares | Defined | 2022-08-10 | |
| 2022-06-30 | $29,228,464 | 53,800 | Call | Defined | 2022-08-10 | |
| 2022-06-30 | $16,624,368 | 30,600 | Put | Defined | 2022-08-10 | |
| 2022-03-31 | $24,748,235 | 41,900 | Put | Defined | 2022-05-12 | |
| 2022-03-31 | $579,984,630 | 981,943 | Shares | Defined | 2022-05-12 | |
| No filing history on record for this holder in this stock. | ||||||