Position in BSX
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$226,591,504
-$55,381,042 QoQ
Shares Held
3,611,020
+22.1% QoQ
Ownership
0.243%
of shares outstanding
% of Portfolio
0.33%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 100.ToString("F0")%
None 0.ToString("F0")%
Common Shares in BSX Over Time
Shares Held
Position Value (USD)
Derivatives in BSX
reported options exposure · as of Mar 31, 2026CallValue
$6,275
CallShares
100
PutValue
$12,550
PutShares
200
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, 2026MARSHALL WACE, LLP holds $1,200,961,606 across 58 Medical Devices names. BSX ranks #1 (18.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BSX |
Boston Scientific Corp
This page
|
3,611,020 | $226,591,504 | |
| 2 | SYK |
Stryker Corp
|
630,236 | $207,089,246 | |
| 3 | ABT |
Abbott Laboratories
|
2,010,938 | $206,463,003 | |
| 4 | EW |
Edwards Lifesciences Corp
|
1,996,377 | $159,869,868 | |
| 5 | PODD |
Insulet Corp
|
606,482 | $127,264,182 | |
| 6 | GMED |
Globus Medical Inc
|
562,630 | $48,476,200 | |
| 7 | TNDM |
Tandem Diabetes Care Inc
|
1,442,472 | $27,652,186 | |
| 8 | HAE |
Haemonetics Corp
|
320,010 | $18,035,762 |
All Filings in BSX
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27 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $12,550 | 200 | Put | Other | 2026-05-15 | |
| 2026-03-31 | $6,275 | 100 | Call | Other | 2026-05-15 | |
| 2026-03-31 | $226,591,504 | 3,611,020 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $47,675,000 | 500,000 | Put | Other | 2026-02-13 | |
| 2025-12-31 | $281,972,546 | 2,957,237 | Shares | Other | 2026-02-13 | |
| 2025-09-30 | $956,680,274 | 9,799,040 | Shares | Other | 2025-11-13 | |
| 2025-06-30 | $805,323,337 | 7,497,657 | Shares | Other | 2025-08-13 | |
| 2025-03-31 | $801,810,581 | 7,948,162 | Shares | Other | 2025-05-15 | |
| 2024-12-31 | $791,897,095 | 8,865,843 | Shares | Other | 2025-02-13 | |
| 2024-09-30 | $690,555,492 | 8,240,519 | Shares | Other | 2024-11-14 | |
| 2024-06-30 | $517,544,163 | 6,720,480 | Shares | Other | 2024-08-14 | |
| 2024-03-31 | $213,162,933 | 3,112,322 | Shares | Other | 2024-05-15 | |
| 2023-12-31 | $93,496,170 | 1,617,301 | Shares | Other | 2024-02-14 | |
| 2023-09-30 | $200,790,902 | 3,802,858 | Shares | Other | 2023-11-14 | |
| 2023-06-30 | $101,757,731 | 1,881,267 | Shares | Other | 2023-08-14 | |
| 2023-03-31 | $211,765,282 | 4,232,766 | Shares | Other | 2023-05-15 | |
| 2022-12-31 | $269,384,540 | 5,822,013 | Shares | Other | 2023-02-14 | |
| 2022-09-30 | $390,799,603 | 10,090,359 | Shares | Other | 2022-11-14 | |
| 2022-06-30 | $390,557,434 | 10,479,137 | Shares | Other | 2022-08-15 | |
| 2022-03-31 | $422,543,517 | 9,540,382 | Shares | Other | 2022-05-16 | |
| 2021-12-31 | $270,074,245 | 6,357,680 | Shares | Other | 2022-02-14 | |
| 2021-09-30 | $41,040,778 | 945,858 | Shares | Sole | 2021-11-15 | |
| 2021-03-31 | $15,822,305 | 409,374 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $26,426,197 | 735,082 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $18,389,861 | 481,284 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $148,898,982 | 4,240,928 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $121,867,176 | 3,734,820 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||