Position in BSX
as of Jun 30, 2026
· filed Jul 31, 2026
Position Value
$28,899,225
-$22,410,571 QoQ
Shares Held
677,114
-17.2% QoQ
Ownership
0.047%
of shares outstanding
% of Portfolio
0.16%
of 13F equity value
Holder Rank
#193
of 1,478 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in BSX Over Time
Shares Held
Position Value (USD)
Derivatives in BSX
reported options exposure · as of Jun 30, 2025CallValue
$14,876,285
CallShares
138,500
PutValue
$0
PutShares
0
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 Medical Devices
Healthcare · as of Jun 30, 2026Calamos Advisors LLC holds $190,225,782 across 12 Medical Devices names. BSX ranks #4 (15.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SYK |
Stryker Corp
|
112,069 | $35,283,803 | |
| 2 | MDT |
Medtronic plc
|
425,833 | $33,312,915 | |
| 3 | PEN |
Penumbra Inc
|
91,863 | $29,005,742 | |
| 4 | BSX |
Boston Scientific Corp
This page
|
677,114 | $28,899,225 | |
| 5 | ABT |
Abbott Laboratories
|
243,068 | $22,055,990 | |
| 6 | EW |
Edwards Lifesciences Corp
|
160,091 | $14,481,831 | |
| 7 | GEHC |
GE HealthCare Technologies Inc.
|
106,017 | $6,786,148 | |
| 8 | DXCM |
Dexcom Inc
|
95,248 | $6,414,952 |
All Filings in BSX
Export CSV
33 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $28,899,225 | 677,114 | Shares | Sole | 2026-07-31 | |
| 2026-03-31 | $51,309,796 | 817,686 | Shares | Sole | 2026-05-04 | |
| 2025-12-31 | $83,112,494 | 871,657 | Shares | Sole | 2026-01-29 | |
| 2025-09-30 | $87,323,200 | 894,430 | Shares | Sole | 2025-10-20 | |
| 2025-06-30 | $14,876,285 | 138,500 | Call | Sole | 2025-08-08 | |
| 2025-06-30 | $107,439,967 | 1,000,279 | Shares | Sole | 2025-08-08 | |
| 2025-03-31 | $97,850,371 | 969,968 | Shares | Sole | 2025-04-29 | |
| 2025-03-31 | $13,971,880 | 138,500 | Call | Sole | 2025-04-29 | |
| 2024-12-31 | $91,736,731 | 1,027,057 | Shares | Sole | 2025-01-24 | |
| 2024-12-31 | $14,648,480 | 164,000 | Call | Sole | 2025-01-24 | |
| 2024-09-30 | $85,689,522 | 1,022,548 | Shares | Sole | 2024-11-07 | |
| 2024-09-30 | $10,751,540 | 128,300 | Call | Sole | 2024-11-07 | |
| 2024-06-30 | $12,244,590 | 159,000 | Call | Sole | 2024-07-25 | |
| 2024-06-30 | $79,467,543 | 1,031,912 | Shares | Sole | 2024-07-25 | |
| 2024-03-31 | $9,499,563 | 138,700 | Call | Sole | 2024-05-08 | |
| 2024-03-31 | $74,150,903 | 1,082,653 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $64,779,804 | 1,120,564 | Shares | Sole | 2024-01-31 | |
| 2023-09-30 | $59,426,558 | 1,125,503 | Shares | Sole | 2023-10-26 | |
| 2023-06-30 | $60,743,286 | 1,123,004 | Shares | Sole | 2023-07-28 | |
| 2023-03-31 | $54,033,450 | 1,080,021 | Shares | Sole | 2023-05-04 | |
| 2022-12-31 | $55,924,744 | 1,208,661 | Shares | Sole | 2023-01-26 | |
| 2022-09-30 | $51,168,488 | 1,321,159 | Shares | Sole | 2022-10-24 | |
| 2022-06-30 | $49,352,374 | 1,324,185 | Shares | Sole | 2022-08-01 | |
| 2022-06-30 | $10,621,950 | 285,000 | Put | Sole | 2022-08-01 | |
| 2022-03-31 | $54,125,170 | 1,222,063 | Shares | Sole | 2022-05-03 | |
| 2021-12-31 | $47,431,936 | 1,116,571 | Shares | Sole | 2022-02-01 | |
| 2021-09-30 | $47,517,560 | 1,095,127 | Shares | Sole | 2021-10-26 | |
| 2021-06-30 | $49,194,567 | 1,150,481 | Shares | Sole | 2021-07-22 | |
| 2021-03-31 | $39,056,134 | 1,010,508 | Shares | Sole | 2021-04-12 | |
| 2020-12-31 | $26,250,150 | 730,185 | Shares | Sole | 2021-01-27 | |
| 2020-09-30 | $27,164,558 | 710,928 | Shares | Sole | 2020-10-26 | |
| 2020-06-30 | $26,589,961 | 757,333 | Shares | Sole | 2020-07-27 | |
| 2020-03-31 | $37,405,922 | 1,146,366 | Shares | Sole | 2020-04-28 | |
| No filing history on record for this holder in this stock. | ||||||