6 institutions reported holding $504,050 of Protagonist Therapeutics Inc (PTGX) in SEC 13F filings for 2026-06-30. Largest institutional holders: GAMMA Investing LLC ($381,101), HARBOR INVESTMENT ADVISORY, LLC ($88,748), MassMutual Private Wealth & Trust, FSB ($16,058), Cedar Mountain Advisors, LLC ($13,852), Versant Capital Management, Inc ($3,310). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GAMMA Investing LLC | $381,101 | 3,109 | Added |
| 2 | HARBOR INVESTMENT ADVISORY, LLC | $88,748 | 724 | New |
| 3 | MassMutual Private Wealth & Trust, FSB | $16,058 | 131 | Added |
| 4 | Cedar Mountain Advisors, LLC | $13,852 | 113 | Hold |
| 5 | Versant Capital Management, Inc | $3,310 | 27 | Hold |
| 6 | Noble Wealth Management PBC | $981 | 8 | New |
Source: SEC Form 13F filings · as of 2026-06-30