Position in ZBIO
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$12,881,670
-$14,392,985 QoQ
Shares Held
658,909
-12.3% QoQ
Ownership
1.04%
of shares outstanding
% of Portfolio
0.35%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2024
7 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in ZBIO 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. ZBIO ranks #12 (3.3% 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.
|
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 ZBIO
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $12,881,670 | 658,909 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $27,274,655 | 751,161 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $18,307,629 | 824,668 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $10,604,135 | 1,094,338 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $8,669,215 | 1,097,369 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $5,140,609 | 627,669 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $5,076,000 | 300,000 | Shares | Sole | 2024-11-14 | |
| No filing history on record for this holder in this stock. | ||||||