Position in TMO
as of Mar 31, 2026
· filed May 4, 2026
Position Value
$68,435,721
-$30,012,834 QoQ
Shares Held
139,230
-18.1% QoQ
Ownership
0.037%
of shares outstanding
% of Portfolio
0.39%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 99.33491345256051.ToString("F0")%
Shared 0.ToString("F0")%
None 0.6650865474394886.ToString("F0")%
Common Shares in TMO Over Time
Shares Held
Position Value (USD)
Derivatives in TMO
reported options exposure · as of Jun 30, 2025CallValue
$0
CallShares
0
PutValue
$6,487,360
PutShares
16,000
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 Mar 31, 2026Calamos Advisors LLC holds $195,948,990 across 11 Diagnostics & Research names. TMO ranks #1 (34.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
This page
|
139,230 | $68,435,721 | |
| 2 | DHR |
Danaher Corp /De/
|
288,363 | $54,673,624 | |
| 3 | IQV |
Iqvia Holdings Inc.
|
145,688 | $24,845,631 | |
| 4 | A |
Agilent Technologies, Inc.
|
163,570 | $18,643,708 | |
| 5 | LH |
Labcorp Holdings Inc.
|
43,515 | $11,610,237 | |
| 6 | DGX |
Quest Diagnostics Inc
|
43,506 | $8,526,305 | |
| 7 | GH |
Guardant Health, Inc.
|
50,668 | $4,680,203 | |
| 8 | WAT |
Waters Corp /De/
|
8,061 | $2,400,565 |
All Filings in TMO
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $68,435,721 | 139,230 | Shares | Sole | 2026-05-04 | |
| 2025-12-31 | $98,448,555 | 169,900 | Shares | Sole | 2026-01-29 | |
| 2025-09-30 | $71,637,454 | 147,700 | Shares | Sole | 2025-10-20 | |
| 2025-06-30 | $48,732,237 | 120,190 | Shares | Sole | 2025-08-08 | |
| 2025-06-30 | $6,487,360 | 16,000 | Put | Sole | 2025-08-08 | |
| 2025-03-31 | $71,002,544 | 142,690 | Shares | Sole | 2025-04-29 | |
| 2024-12-31 | $75,849,534 | 145,800 | Shares | Sole | 2025-01-24 | |
| 2024-09-30 | $88,048,490 | 142,342 | Shares | Sole | 2024-11-07 | |
| 2024-06-30 | $77,790,510 | 140,670 | Shares | Sole | 2024-07-25 | |
| 2024-03-31 | $83,508,834 | 143,681 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $76,233,652 | 143,623 | Shares | Sole | 2024-01-31 | |
| 2023-09-30 | $84,505,081 | 166,950 | Shares | Sole | 2023-10-26 | |
| 2023-06-30 | $83,448,173 | 159,939 | Shares | Sole | 2023-07-28 | |
| 2023-03-31 | $84,909,099 | 147,317 | Shares | Sole | 2023-05-04 | |
| 2022-12-31 | $87,733,728 | 159,316 | Shares | Sole | 2023-01-26 | |
| 2022-09-30 | $100,018,882 | 197,202 | Shares | Sole | 2022-10-24 | |
| 2022-06-30 | $101,277,714 | 186,419 | Shares | Sole | 2022-08-01 | |
| 2022-03-31 | $104,595,845 | 177,086 | Shares | Sole | 2022-05-03 | |
| 2021-12-31 | $115,222,339 | 172,685 | Shares | Sole | 2022-02-01 | |
| 2021-09-30 | $75,502,973 | 132,153 | Shares | Sole | 2021-10-26 | |
| 2021-06-30 | $48,561,795 | 96,263 | Shares | Sole | 2021-07-22 | |
| 2021-03-31 | $49,800,641 | 109,121 | Shares | Sole | 2021-04-12 | |
| 2020-12-31 | $67,044,838 | 143,941 | Shares | Sole | 2021-01-27 | |
| 2020-09-30 | $60,598,620 | 137,250 | Shares | Sole | 2020-10-26 | |
| 2020-06-30 | $34,066,844 | 94,019 | Shares | Sole | 2020-07-27 | |
| 2020-03-31 | $27,503,811 | 96,981 | Shares | Sole | 2020-04-28 | |
| No filing history on record for this holder in this stock. | ||||||