Stock overview
Protagonist Therapeutics Inc.
Explore the company, reported ownership, price history, and available source evidence.
PROTAGONIST THERAPEUTICS INC (PTGX) is a healthcare or biotechnology equity security tracked from 13F filings.
- Last close
- $142.44
- · PTGX
- Tracked holders
- 3 funds
- Latest available 13F per fund
PTGX · USD
Price
$142.44
-$1.89
(-1.31%)
over selected range
Close · Sep 28, 2026
Market closed
21 stored daily closes
$142.44
Sep 28, 2026
- Range low
- $137.34
- Range high
- $148.80
- Observations
- 21
- Session date
- Sep 28, 2026
Aug 28, 2026–Sep 28, 2026. Regular market hours only. Historical prices are unadjusted; splits and other corporate actions can affect comparisons.
Investor Popularity
Rows are narrowed by movement, fund type, and position size.
| Fund | Move | Value | Weight |
|---|---|---|---|
| Duquesne Family Office largest tracked holder Q2 2026 · filed Aug 14, 2026 · SEC filing | +31% 26'Q2 | $25,607,000 | 0.49% |
| Polen Capital Management position history Q2 2026 · filed Aug 4, 2026 · SEC filing | −7% 26'Q2 | $2,776,560 | 0.02% |
| Gotham Asset Management position history Q2 2026 · filed Aug 14, 2026 · SEC filing | −12% 26'Q2 | $2,287,711 | 0.01% |
SEC Forms 4/5
Insiders
Financials
Official-source analysis
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