ArrowMark Colorado Holdings LLC
Position in HALO — Halozyme Therapeutics, Inc.
CIK 1483859
Denver, CO
Position in HALO
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$36,825,463
-$5,319,008 QoQ
Shares Held
569,789
-9.0% QoQ
Ownership
0.480%
of shares outstanding
% of Portfolio
1.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2023
13 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in HALO Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026ArrowMark Colorado Holdings LLC holds $391,186,309 across 37 Biotechnology names. HALO ranks #2 (9.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PRAX |
Praxis Precision Medicines, Inc.
|
117,851 | $37,970,413 | |
| 2 | HALO |
Halozyme Therapeutics, Inc.
This page
|
569,789 | $36,825,463 | |
| 3 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
62,441 | $32,685,990 | |
| 4 | DFTX |
Definium Therapeutics, Inc.
|
1,594,717 | $30,140,151 | |
| 5 | MAZE |
Maze Therapeutics, Inc.
|
767,383 | $22,906,382 | |
| 6 | NUVL |
Nuvalent, Inc.
|
186,850 | $19,142,782 | |
| 7 | RPRX |
Royalty Pharma plc
|
366,753 | $17,593,141 | |
| 8 | TNGX |
Tango Therapeutics, Inc.
|
708,385 | $14,819,414 |
All Filings in HALO
Export CSV
13 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $36,825,463 | 569,789 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $42,144,471 | 626,218 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $67,830,332 | 924,875 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $45,093,068 | 866,841 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $87,001,042 | 1,363,439 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $72,217,530 | 1,510,511 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $115,089,892 | 2,010,655 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $109,469,104 | 2,090,701 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $75,617,651 | 1,858,841 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $58,252,027 | 1,576,083 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $58,358,636 | 1,527,713 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $47,693,196 | 1,322,240 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $44,170,477 | 1,156,598 | Shares | Sole | 2023-05-15 | |
| No filing history on record for this holder in this stock. | ||||||