WELLINGTON MANAGEMENT GROUP LLP
Position in PTGX — Protagonist Therapeutics, Inc
CIK 902219
Boston, MA
Position in PTGX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$418,829,010
+$39,426,537 QoQ
Shares Held
3,416,781
-5.1% QoQ
Ownership
5.28%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
#5
of 341 holders
Holding Since
Sep 2024
8 quarters on record
Voting authority
Sole 0%
Shared 84%
None 16%
Common Shares in PTGX Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026WELLINGTON MANAGEMENT GROUP LLP holds $14,994,233,945 across 206 Biotechnology names. PTGX ranks #10 (2.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
3,247,658 | $1,613,209,155 | |
| 2 | ARGX |
Argenx SE
|
930,548 | $863,334,513 | |
| 3 | REGN |
Regeneron Pharmaceuticals, Inc.
|
1,270,087 | $791,950,042 | |
| 4 | RVMD |
Revolution Medicines, Inc.
|
3,843,415 | $719,794,757 | |
| 5 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
2,110,407 | $635,295,816 | |
| 6 | IONS |
Ionis Pharmaceuticals Inc
|
7,651,415 | $606,680,693 | |
| 7 | CYTK |
Cytokinetics Inc
|
6,931,770 | $590,517,483 | |
| 8 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
825,714 | $443,367,129 |
All Filings in PTGX
Export CSV
8 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $418,829,010 | 3,416,781 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $379,402,473 | 3,599,644 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $276,992,080 | 3,171,423 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $126,778,063 | 1,908,446 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $57,355,775 | 1,037,738 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $47,749,209 | 987,370 | Shares | Defined | 2025-05-13 | |
| 2024-12-31 | $36,286,969 | 940,077 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $1,353,555 | 30,079 | Shares | Defined | 2024-11-14 | |
| No filing history on record for this holder in this stock. | ||||||