Position in NTRA
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$197,243,170
+$46,304,918 QoQ
Shares Held
726,628
-3.7% QoQ
Ownership
0.504%
of shares outstanding
% of Portfolio
0.65%
of 13F equity value
Holder Rank
#38
of 846 holders
Holding Since
Dec 2024
7 quarters on record
Voting authority
Sole 85%
Shared 0%
None 15%
Common Shares in NTRA Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026WESTFIELD CAPITAL MANAGEMENT CO LP holds $584,012,441 across 7 Diagnostics & Research names. NTRA ranks #2 (33.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GH |
Guardant Health, Inc.
|
1,624,459 | $243,717,583 | |
| 2 | NTRA |
Natera, Inc.
This page
|
726,628 | $197,243,170 | |
| 3 | IDXX |
Idexx Laboratories Inc /De
|
139,925 | $73,662,117 | |
| 4 | RDNT |
RadNet, Inc.
|
975,542 | $60,161,675 | |
| 5 | TMO |
Thermo Fisher Scientific Inc.
|
14,214 | $7,126,331 | |
| 6 | DHR |
Danaher Corp /De/
|
11,033 | $2,101,565 | |
| 7 | ADPT |
Adaptive Biotechnologies Corp
|
1,066,911 | $0 |
All Filings in NTRA
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $197,243,170 | 726,628 | Shares | Sole | 2026-08-12 | |
| 2026-03-31 | $150,938,252 | 754,729 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $163,728,790 | 714,692 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $92,686,847 | 575,802 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $113,171,047 | 669,889 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $97,762,530 | 691,341 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $84,816,190 | 535,794 | Shares | Sole | 2025-02-11 | |
| No filing history on record for this holder in this stock. | ||||||