Position in PEN
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$41,487,655
New position
Shares Held
131,394
first reported quarter
Ownership
0.334%
of shares outstanding
% of Portfolio
0.14%
of 13F equity value
Holder Rank
#52
of 446 holders
Holding Since
Jun 2026
1 quarter on record
Voting authority
Sole 90%
Shared 0%
None 10%
Position in Medical Devices
Healthcare · as of Jun 30, 2026WESTFIELD CAPITAL MANAGEMENT CO LP holds $200,478,527 across 7 Medical Devices names. PEN ranks #3 (20.7% 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
This page
|
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
|
34,378 | $1,467,253 | |
| 7 | LUNG |
Pulmonx Corp
|
110,000 | $143,000 |
All Filings in PEN
Export CSV
1 filing row on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $41,487,655 | 131,394 | Shares | Sole | 2026-08-12 | |
| No filing history on record for this holder in this stock. | ||||||