NEXTBio Capital Management LP
Position in PTGX — Protagonist Therapeutics, Inc
CIK 2038158
AUSTIN, TX
Position in PTGX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$26,885,839
+$2,683,997 QoQ
Shares Held
219,333
-4.5% QoQ
Ownership
0.339%
of shares outstanding
% of Portfolio
12.37%
of 13F equity value
Holder Rank
#43
of 341 holders
Holding Since
Dec 2025
3 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in PTGX Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026NEXTBio Capital Management LP holds $189,801,163 across 20 Biotechnology names. PTGX ranks #1 (14.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PTGX |
Protagonist Therapeutics, Inc
This page
|
219,333 | $26,885,839 | |
| 2 | STTK |
Shattuck Labs, Inc.
|
3,727,348 | $25,867,795 | |
| 3 | GPCR |
Structure Therapeutics Inc.
|
312,496 | $16,771,660 | |
| 4 | VOR |
Vor Biopharma Inc.
|
889,164 | $16,369,509 | |
| 5 | RYTM |
Rhythm Pharmaceuticals, Inc.
|
131,758 | $14,629,090 | |
| 6 | PVLA |
Palvella Therapeutics, Inc.
|
89,909 | $13,739,893 | |
| 7 | XENE |
Xenon Pharmaceuticals Inc.
|
183,225 | $11,059,461 | |
| 8 | ZBIO |
Zenas BioPharma, Inc.
|
426,736 | $10,830,559 |
All Filings in PTGX
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3 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $26,885,839 | 219,333 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $24,201,842 | 229,619 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $20,054,923 | 229,619 | Shares | Sole | 2026-02-13 | |
| No filing history on record for this holder in this stock. | ||||||