Position in WGS
as of Mar 31, 2026
· filed May 11, 2026
Position Value
$87,924,115
-$44,510,910 QoQ
Shares Held
1,369,108
+34.5% QoQ
Ownership
4.59%
of shares outstanding
% of Portfolio
0.37%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2025
5 quarters on record
Voting authority
Sole 93%
Shared 0%
None 7%
Common Shares in WGS 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.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | GH |
Guardant Health, Inc.
|
1,624,459 | $243,717,583 | |
| 2 | NTRA |
Natera, Inc.
|
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 WGS
Export CSV
5 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $87,924,115 | 1,369,108 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $132,435,025 | 1,018,261 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $58,620,687 | 544,094 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $54,387,944 | 589,188 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $19,703,675 | 222,477 | Shares | Sole | 2025-05-09 | |
| No filing history on record for this holder in this stock. | ||||||