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Calamos Advisors LLC

Position in BSX — Boston Scientific Corp

CIK 1316507 NAPERVILLE, IL

Position in BSX

as of Mar 31, 2026 · filed May 4, 2026
Position Value
$51,309,796
-$31,802,698 QoQ
Shares Held
817,686
-6.2% QoQ
Ownership
0.055%
of shares outstanding
% of Portfolio
0.29%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 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, 2025
CallValue
$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 Mar 31, 2026

Calamos Advisors LLC holds $249,655,686 across 14 Medical Devices names. BSX ranks #3 (20.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 BSX
Boston Scientific Corp
This page
817,686 $51,309,796

All Filings in BSX

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32 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $51,309,796 817,686
2025-12-31 $83,112,494 871,657
2025-09-30 $87,323,200 894,430
2025-06-30 $14,876,285 138,500
2025-06-30 $107,439,967 1,000,279
2025-03-31 $97,850,371 969,968
2025-03-31 $13,971,880 138,500
2024-12-31 $91,736,731 1,027,057
2024-12-31 $14,648,480 164,000
2024-09-30 $85,689,522 1,022,548
2024-09-30 $10,751,540 128,300
2024-06-30 $12,244,590 159,000
2024-06-30 $79,467,543 1,031,912
2024-03-31 $9,499,563 138,700
2024-03-31 $74,150,903 1,082,653
2023-12-31 $64,779,804 1,120,564
2023-09-30 $59,426,558 1,125,503
2023-06-30 $60,743,286 1,123,004
2023-03-31 $54,033,450 1,080,021
2022-12-31 $55,924,744 1,208,661
2022-09-30 $51,168,488 1,321,159
2022-06-30 $49,352,374 1,324,185
2022-06-30 $10,621,950 285,000
2022-03-31 $54,125,170 1,222,063
2021-12-31 $47,431,936 1,116,571
2021-09-30 $47,517,560 1,095,127
2021-06-30 $49,194,567 1,150,481
2021-03-31 $39,056,134 1,010,508
2020-12-31 $26,250,150 730,185
2020-09-30 $27,164,558 710,928
2020-06-30 $26,589,961 757,333
2020-03-31 $37,405,922 1,146,366