Boston Scientific Corporation
MX ˙ BMV ˙ FR0010424135
SecurityMX:BSX / Boston Scientific Corporation
InstitutionCohen Klingenstein LLC
Latest Disclosed Ownership30,500 shares
Latest Disclosed Value $ 1,913,875
Cohen Klingenstein LLC ownership in BSX / Boston Scientific Corporation

On April 15, 2026 - Cohen Klingenstein LLC filed a 13F-HR form disclosing ownership of 30,500 shares of Boston Scientific Corporation (MX:BSX) valued at $1,913,875 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 30,500 shares of Boston Scientific Corporation. This represents a change in shares of 0.00% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-15 2026-03-31 13F Boston Scientific COM 101137107 30,500 0 0.00 1,914 -34.22 0.0619
2026-01-20 2025-12-31 13F Boston Scientific COM 101137107 30,500 0 0.00 2,908 -2.32 0.0884
2025-10-16 2025-09-30 13F Boston Scientific COM 101137107 30,500 0 0.00 2,978 -9.13 0.0933
2025-07-18 2025-06-30 13F Boston Scientific COM 101137107 30,500 0 0.00 3,276 6.50 0.1093
2025-04-15 2025-03-31 13F Boston Scientific COM 101137107 30,500 0 0.00 3,077 12.92 0.1115
2025-01-15 2024-12-31 13F Boston Scientific COM 101137107 30,500 0 0.00 2,724 6.61 0.0932
2024-10-16 2024-09-30 13F Boston Scientific COM 101137107 30,500 0 0.00 2,556 8.82 0.0890
2024-07-15 2024-06-30 13F Boston Scientific COM 101137107 30,500 0 0.00 2,349 12.45 0.0853
2024-04-12 2024-03-31 13F Boston Scientific COM 101137107 30,500 0 0.00 2,089 18.43 0.0778
2024-01-16 2023-12-31 13F Boston Scientific COM 101137107 30,500 0 0.00 1,763 9.50 0.0721
2023-10-13 2023-09-30 13F Boston Scientific COM 101137107 30,500 0 0.00 1,610 -2.37 0.0729
2023-07-14 2023-06-30 13F Boston Scientific COM 101137107 30,500 0 0.00 1,650 8.13 0.0715
2023-04-14 2023-03-31 13F Boston Scientific COM 101137107 30,500 0 0.00 1,526 8.08 0.0717
2023-01-13 2022-12-31 13F Boston Scientific COM 101137107 30,500 0 0.00 1,411 19.48 0.0710
2022-10-12 2022-09-30 13F Boston Scientific COM 101137107 30,500 0 0.00 1,181 3.87 0.0626
2022-07-15 2022-06-30 13F Boston Scientific COM 101137107 30,500 0 0.00 1,137 -15.84 0.0570
2022-04-14 2022-03-31 13F Boston Scientific COM 101137107 30,500 0 0.00 1,351 4.24 0.0561
2022-01-14 2021-12-31 13F Boston Scientific COM 101137107 30,500 0 0.00 1,296 -2.04 0.0513
2021-10-15 2021-09-30 13F Boston Scientific COM 101137107 30,500 0 0.00 1,323 1.46 0.0578
2021-07-16 2021-06-30 13F Boston Scientific COM 101137107 30,500 0 0.00 1,304 10.60 0.0561
2021-04-15 2021-03-31 13F Boston Scientific COM 101137107 30,500 0 0.00 1,179 7.57 0.0544
2021-01-25 2020-12-31 13F/A-1 Boston Scientific COM 101137107 30,500 0 0.00 1,096 -5.92 0.0548
2021-01-19 2020-12-31 13F Boston Scientific COM 101137107 30,500 0 1,096 54,735.7402
2020-10-19 2020-09-30 13F Boston Scientific COM 101137107 30,500 0 0.00 1,165 8.78 0.0656
2020-07-15 2020-06-30 13F Boston Scientific COM 101137107 30,500 0 0.00 1,071 7.64 0.0657
2020-04-15 2020-03-31 13F Boston Scientific COM 101137107 30,500 0 0.00 995 -27.85 0.0736
2020-01-15 2019-12-31 13F Boston Scientific COM 101137107 30,500 0 0.00 1,379 11.12 0.0801
2019-10-17 2019-09-30 13F Boston Scientific COM 101137107 30,500 30,500 1,241 0.0780
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.