Position in IRTC
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$34,367,509
-$23,311,669 QoQ
Shares Held
288,924
-11.1% QoQ
Ownership
0.877%
of shares outstanding
% of Portfolio
0.11%
of 13F equity value
Holder Rank
#32
of 304 holders
Holding Since
Mar 2024
9 quarters on record
Voting authority
Sole 95%
Shared 0%
None 5%
Common Shares in IRTC 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. IRTC ranks #4 (17.1% 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.
This page
|
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 IRTC
Export CSV
9 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $34,367,509 | 288,924 | Shares | Sole | 2026-08-12 | |
| 2025-12-31 | $57,679,178 | 325,063 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $55,721,320 | 323,980 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $44,736,157 | 290,570 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $64,595,725 | 617,078 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $69,002,863 | 765,253 | Shares | Sole | 2025-02-11 | |
| 2024-09-30 | $39,220,323 | 528,291 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $65,561,371 | 609,080 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $58,310,648 | 502,678 | Shares | Sole | 2024-05-10 | |
| No filing history on record for this holder in this stock. | ||||||