Boston Scientific Corporation
MX ˙ BMV ˙ FR0010424135
SecurityMX:BSX / Boston Scientific Corporation
InstitutionCapital International Ltd /ca/
Latest Disclosed Ownership153,640 shares
Latest Disclosed Value $ 9,640,910
Capital International Ltd /ca/ reports 35.68% decrease in ownership of BSX / Boston Scientific Corporation

On May 13, 2026 - Capital International Ltd /ca/ filed a 13F-HR form disclosing ownership of 153,640 shares of Boston Scientific Corporation (MX:BSX) valued at $9,640,910 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 238,865 shares of Boston Scientific Corporation. This represents a change in shares of -35.68% 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)
2026-05-13 2026-03-31 13F BOSTON SCIENTIFIC COM 101137107 153,640 -85,225 -35.68 9,641 -57.67 0.3573
2026-02-11 2025-12-31 13F BOSTON SCIENTIFIC COM 101137107 238,865 35,274 17.33 22,776 14.59 0.8027
2025-11-13 2025-09-30 13F BOSTON SCIENTIFIC COM 101137107 203,591 -18,298 -8.25 19,877 -16.60 0.7192
2025-08-13 2025-06-30 13F BOSTON SCIENTIFIC COM 101137107 221,889 251 0.11 23,833 6.60 0.9130
2025-05-12 2025-03-31 13F BOSTON SCIENTIFIC COM 101137107 221,638 16,902 8.26 22,359 22.26 0.9748
2025-02-13 2024-12-31 13F BOSTON SCIENTIFIC COM 101137107 204,736 98,646 92.98 18,287 105.70 0.7459
2024-11-13 2024-09-30 13F BOSTON SCIENTIFIC COM 101137107 106,090 35,430 50.14 8,890 63.39 0.3831
2024-08-13 2024-06-30 13F BOSTON SCIENTIFIC COM 101137107 70,660 6,954 10.92 5,442 24.71 0.2509
2024-05-14 2024-03-31 13F BOSTON SCIENTIFIC COM 101137107 63,706 63,706 4,363 0.2087
2021-05-14 2021-03-31 13F BOSTON SCIENTIFIC COM 101137107 0 -57,861 -100.00 0 -100.00
2021-02-16 2020-12-31 13F BOSTON SCIENTIFIC COM 101137107 57,861 -342,830 -85.56 2,080 -86.41 0.1214
2020-11-13 2020-09-30 13F BOSTON SCIENTIFIC COM 101137107 400,691 4,674 1.18 15,310 10.11 1.0376
2020-08-14 2020-06-30 13F BOSTON SCIENTIFIC COM 101137107 396,017 -5,329 -1.33 13,904 6.17 1.3014
2020-05-15 2020-03-31 13F BOSTON SCIENTIFIC COMMON STOCK 101137107 401,346 -14,848 -3.57 13,096 -30.41 1.4690
2020-02-18 2019-12-31 13F BOSTON SCIENTIFIC COMMON STOCK 101137107 416,194 131,058 45.96 18,820 62.21 1.9824
2019-11-14 2019-09-30 13F BOSTON SCIENTIFIC COMMON STOCK 101137107 285,136 143,506 101.32 11,602 90.60 1.7549
2019-08-14 2019-06-30 13F BOSTON SCIENTIFIC COMMON STOCK 101137107 141,630 716 0.51 6,087 12.56 1.4469
2019-05-15 2019-03-31 13F BOSTON SCIENTIFIC COMMON STOCK 101137107 140,914 0 0.00 5,408 8.59 1.2951
2019-02-14 2018-12-31 13F BOSTON SCIENTIFIC COMMON STOCK 101137107 140,914 6,026 4.47 4,980 -4.10 1.3504
2018-11-14 2018-09-30 13F BOSTON SCIENTIFIC COMMON STOCK 101137107 134,888 6,976 5.45 5,193 24.15 1.6206
2018-08-14 2018-06-30 13F BOSTON SCIENTIFIC COMMON STOCK 101137107 127,912 0 0.00 4,183 19.69 0.7315
2018-05-15 2018-03-31 13F BOSTON SCIENTIFIC COMMON STOCK 101137107 127,912 10,832 9.25 3,495 20.43 0.6261
2018-02-14 2017-12-31 13F BOSTON SCIENTIFIC COMMON STOCK 101137107 117,080 117,080 2,902 0.5503
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.