GW&K Investment Management, LLC
Position in HALO — Halozyme Therapeutics, Inc.
CIK 1082917
BOSTON, MA
Position in HALO
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$90,086,140
+$5,648,330 QoQ
Shares Held
1,393,875
+11.1% QoQ
Ownership
1.18%
of shares outstanding
% of Portfolio
0.81%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2020
22 quarters on record
Voting authority
Sole 94%
Shared 6%
None 0%
Common Shares in HALO Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026GW&K Investment Management, LLC holds $699,704,251 across 25 Biotechnology names. HALO ranks #2 (12.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | INSM |
INSMED Inc
|
623,048 | $101,880,808 | |
| 2 | HALO |
Halozyme Therapeutics, Inc.
This page
|
1,393,875 | $90,086,140 | |
| 3 | BBIO |
BridgeBio Pharma, Inc.
|
962,643 | $71,485,868 | |
| 4 | JAZZ |
Jazz Pharmaceuticals plc
|
371,098 | $70,156,076 | |
| 5 | CRNX |
Crinetics Pharmaceuticals, Inc.
|
1,618,686 | $58,790,674 | |
| 6 | IONS |
Ionis Pharmaceuticals Inc
|
779,349 | $58,521,315 | |
| 7 | VCEL |
Vericel Corp
|
1,616,855 | $52,014,225 | |
| 8 | AGIO |
Agios Pharmaceuticals, Inc.
|
1,214,901 | $41,100,100 |
All Filings in HALO
Export CSV
22 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $90,086,140 | 1,393,875 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $84,437,810 | 1,254,648 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $92,534,324 | 1,261,717 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $74,103,322 | 1,424,516 | Shares | Sole | 2025-08-11 | |
| 2025-03-31 | $93,474,694 | 1,464,891 | Shares | Sole | 2025-05-05 | |
| 2024-12-31 | $83,459,095 | 1,745,641 | Shares | Sole | 2025-02-05 | |
| 2024-09-30 | $100,871,819 | 1,762,261 | Shares | Sole | 2024-11-07 | |
| 2024-06-30 | $114,145,061 | 2,180,005 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $89,368,955 | 2,196,877 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $82,292,844 | 2,226,538 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $89,552,450 | 2,344,305 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $85,831,774 | 2,379,589 | Shares | Sole | 2023-08-09 | |
| 2023-03-31 | $91,736,771 | 2,402,115 | Shares | Sole | 2023-05-09 | |
| 2022-12-31 | $118,855,905 | 2,088,856 | Shares | Sole | 2023-02-10 | |
| 2022-09-30 | $87,108,280 | 2,203,042 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $72,309,072 | 1,643,388 | Shares | Sole | 2022-08-09 | |
| 2022-03-31 | $65,955,896 | 1,653,859 | Shares | Sole | 2022-05-09 | |
| 2021-12-31 | $62,673,074 | 1,558,644 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $60,969,922 | 1,498,769 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $48,279,638 | 1,063,194 | Shares | Sole | 2021-08-10 | |
| 2021-03-31 | $44,242,678 | 1,061,230 | Shares | Other | 2021-05-11 | |
| 2020-12-31 | $35,972,710 | 842,255 | Shares | Other | 2021-02-05 | |
| No filing history on record for this holder in this stock. | ||||||