Position in BSX
as of Mar 31, 2026
· filed May 11, 2026
Position Value
$374,303
-$452,572 QoQ
Shares Held
5,965
-31.2% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
15 quarters on record
Voting authority
Sole 65.2975691533948.ToString("F0")%
Shared 0.ToString("F0")%
None 34.702430846605196.ToString("F0")%
Common Shares in BSX Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Mar 31, 2026WESTFIELD CAPITAL MANAGEMENT CO LP holds $120,408,739 across 7 Medical Devices names. BSX ranks #5 (0.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MASI |
Masimo Corp
|
341,229 | $60,694,402 | |
| 2 | GKOS |
GLAUKOS Corp
|
482,219 | $51,915,697 | |
| 3 | MDT |
Medtronic plc
|
60,349 | $5,229,240 | |
| 4 | DXCM |
Dexcom Inc
|
27,074 | $1,700,247 | |
| 5 | BSX |
Boston Scientific Corp
This page
|
5,965 | $374,303 | |
| 6 | PODD |
Insulet Corp
|
1,682 | $352,950 | |
| 7 | LUNG |
Pulmonx Corp
|
110,000 | $141,900 |
All Filings in BSX
Export CSV
15 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $374,303 | 5,965 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $826,875 | 8,672 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $741,206 | 7,592 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $394,087 | 3,669 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $506,922 | 5,025 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $382,289 | 4,280 | Shares | Sole | 2025-02-11 | |
| 2024-09-30 | $356,569 | 4,255 | Shares | Sole | 2024-11-12 | |
| 2021-12-31 | $3,447,379 | 81,153 | Shares | Sole | 2022-02-10 | |
| 2021-09-30 | $86,876,716 | 2,002,229 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $78,667,410 | 1,839,743 | Shares | Sole | 2021-08-10 | |
| 2021-03-31 | $118,718,074 | 3,071,619 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $124,556,971 | 3,464,728 | Shares | Sole | 2021-02-12 | |
| 2020-09-30 | $114,729,842 | 3,002,613 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $108,846,301 | 3,100,151 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $63,135,264 | 1,934,884 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||