Position in BSX
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$1,467,253
+$1,092,950 QoQ
Shares Held
34,378
+476.3% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#622
of 1,468 holders
Holding Since
Mar 2020
16 quarters on record
Voting authority
Sole 74%
Shared 0%
None 26%
Common Shares in BSX Over Time
Shares Held
Position Value (USD)
Position in Medical Devices
Healthcare · as of Jun 30, 2026WESTFIELD CAPITAL MANAGEMENT CO LP holds $200,478,527 across 7 Medical Devices names. BSX ranks #6 (0.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GKOS |
GLAUKOS Corp
|
483,411 | $67,561,521 | |
| 2 | PODD |
Insulet Corp
|
352,717 | $53,701,163 | |
| 3 | PEN |
Penumbra Inc
|
131,394 | $41,487,655 | |
| 4 | IRTC |
iRhythm Holdings, Inc.
|
288,924 | $34,367,509 | |
| 5 | DXCM |
Dexcom Inc
|
25,990 | $1,750,426 | |
| 6 | BSX |
Boston Scientific Corp
This page
|
34,378 | $1,467,253 | |
| 7 | LUNG |
Pulmonx Corp
|
110,000 | $143,000 |
All Filings in BSX
Export CSV
16 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,467,253 | 34,378 | Shares | Sole | 2026-08-12 | |
| 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. | ||||||