Protagonist Therapeutics, Inc. 13F holders
Of the 44 funds followed here, 6 reported a position in Protagonist Therapeutics, Inc. in a 13F for the quarter ended 30 June 2026. The largest: Geode Capital Management, 1.7 million shares worth $213.5 million, 0.0% of its reported book.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 1,741,209 | $213.5 million | 0.0% | +71,838 | added | 30 June 2026 | 13F |
| Alyeska | 889,298 | $109.0 million | 0.3% | +296,101 | added | 30 June 2026 | 13F |
| FMR LLC | 672,186 | $82.4 million | 0.0% | +10,189 | added | 30 June 2026 | 13F |
| Duquesne Family Office | 208,900 | $25.6 million | 0.5% | +49,200 | added | 30 June 2026 | 13F |
| Citadel Advisors | 45,800 | $5.6 million | 0.0% | -1,558,600 | trimmed | 30 June 2026 | 13F |
| Bridgewater Associates | 9,269 | $1.1 million | 0.0% | +3,993 | added | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 13 August 2026 | 13G/A | Farallon Capital Management, L.L.C. and 57 others | 6.4 million | 10.0% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 7 August 2026 | 13G | State Street Corporation and 1 other | 3.3 million | 5.2% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 12 May 2026 | 13G | State Street Corporation and 1 other | 3.1 million | 4.9% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 30 April 2026 | 13G | Vanguard Capital Management and 1 other | 3.3 million | 5.1% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 29 April 2026 | 13G | Vanguard Portfolio Management and 1 other | 3.5 million | 5.5% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 27 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 17 February 2026 | 13G/A | RTW Investments, LP and 3 others | 5.1 million | 8.1% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 10 February 2026 | 13G | Wellington Management Group LLP and 5 others | 3.2 million | 5.1% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 6 February 2026 | 13G/A | Farallon Capital Partners, L.P. and 61 others | 6.2 million | 10.0% | 31 December 2025 | passive, under 20% (13d-1(c)) | EDGAR |
| 30 January 2026 | 13G/A | The Vanguard Group and 1 other | 5.4 million | 8.7% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 14 November 2025 | 13G/A | Deep Track Capital, LP and 5 others | 1.7 million | 2.8% | 30 September 2025 | passive, under 20% (13d-1(c)) | EDGAR |
| 14 November 2025 | 13G/A | Biotechnology Value Fund L P and 19 others | 2.6 million | 4.1% | 30 September 2025 | passive, under 20% (13d-1(c)) | EDGAR |
| 17 October 2025 | 13G/A | BlackRock, Inc. and 1 other | 8.6 million | 13.8% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.Fails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 9 September 2026 | 28,995 | $145.94 | SEC |
| 3 September 2026 | 47,443 | $146.08 | SEC |
| 2 September 2026 | 1,629 | $146.49 | SEC |
| 26 August 2026 | 2,090 | $150.59 | SEC |
| 19 August 2026 | 2,100 | $157.34 | SEC |
| 6 August 2026 | 94 | $137.32 | SEC |
| 4 August 2026 | 2 | $132.28 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.
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Largest in the window: 47,443 on 3 September 2026. A fail is an operational fact about settlement, not a position.Source
Each fund's 13F-HR on EDGAR, linked per row; positions matched to PTGX by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.
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