Portolan Capital Management, LLC
Position in HALO — Halozyme Therapeutics, Inc.
CIK 1350290
BOSTON, MA
Position in HALO
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$9,979,268
+$3,882,565 QoQ
Shares Held
127,498
-12.8% QoQ
Ownership
0.112%
of shares outstanding
% of Portfolio
0.38%
of 13F equity value
Holder Rank
#117
of 667 holders
Holding Since
Mar 2020
6 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in HALO Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026Portolan Capital Management, LLC holds $46,223,505 across 3 Biotechnology names. HALO ranks #2 (21.6% of the industry book) .
All Filings in HALO
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6 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $9,979,268 | 127,498 | Shares | Sole | 2026-08-14 | |
| 2021-03-31 | $6,096,703 | 146,239 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $8,922,119 | 208,900 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $10,667,945 | 405,934 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $14,298,041 | 533,310 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $5,563,767 | 309,270 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||