Who owns Protagonist Therapeutics, Inc.?
Institutional ownership of PTGX from SEC Form 13F filings across 222 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
222
13F holders
$5.90B
value, 2026 filers
79.2%
of shares outstanding (50.9M sh)
37
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of PTGX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 10.3M | $1.26B | 0.0% | 16% | +5.4% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.6M | $444.9M | 0.0% | 5.6% | +4.3% |
| 3 | WELLINGTON MANAGEMENT GROUP LLP | 3.4M | $418.8M | 0.1% | 5.3% | -5.1% |
| 4 | UBS Group AG | 3.4M | $416.7M | 0.1% | 5.3% | -34.4% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.9M | $349.8M | 0.0% | 4.4% | +1.7% |
| 6 | Invesco Ltd. | 2.3M | $286.9M | 0.0% | 3.6% | +8.1% |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | 2.1M | $263,507 | 0.0% | 3.3% | +29.1% |
| 8 | Jupiter Topco LLCNEW | 2.1M | $261.0M | 0.1% | 3.3% | new |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 1.7M | $213.5M | 0.0% | 2.7% | +4.3% |
| 10 | Woodline Partners LP | 1.4M | $173.3M | 0.5% | 2.2% | -50.0% |
| 11 | BANK OF AMERICA CORP /DE/ | 1.3M | $162.4M | 0.0% | 2.1% | +2.2% |
| 12 | JENNISON ASSOCIATES LLC | 1.2M | $141.2M | 0.1% | 1.8% | +7.4% |
| 13 | MORGAN STANLEY | 905,992 | $111.1M | 0.0% | 1.4% | -11.0% |
| 14 | GOLDMAN SACHS GROUP INC | 812,852 | $99.6M | 0.0% | 1.3% | +4.4% |
| 15 | Clearbridge Investments, LLC | 725,335 | $88.9M | 0.1% | 1.1% | +16.6% |
| 16 | FMR LLC | 672,186 | $82.4M | 0.0% | 1% | +1.5% |
| 17 | NORTHERN TRUST CORP | 666,105 | $81.7M | 0.0% | 1% | +13.3% |
| 18 | AMERICAN CENTURY COMPANIES INC | 598,600 | $73.4M | 0.0% | 0.9% | +11.4% |
| 19 | Sixth Street Partners Management Company, L.P.NEW | 583,774 | $71.6M | 12.4% | 0.9% | new |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 583,774 | $71.6M | 0.0% | 0.9% | +5.6% |
| 21 | VOYA INVESTMENT MANAGEMENT LLC | 571,618 | $70.1M | 0.1% | 0.9% | +25.8% |
| 22 | Pictet Asset Management Holding SA | 567,990 | $69.6M | 0.1% | 0.9% | -2.3% |
| 23 | FRANKLIN RESOURCES INC | 520,032 | $63.7M | 0.0% | 0.8% | +277.2% |
| 24 | VANGUARD FIDUCIARY TRUST CO | 437,747 | $53.7M | 0.0% | 0.7% | +6.1% |
| 25 | Public Sector Pension Investment Board | 415,376 | $50.9M | 0.1% | 0.6% | +97.5% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.