14 institutions reported holding $5.0M of IONIS PHARMACEUTICALS INC (IONS) in SEC 13F filings for 2026-06-30. Largest institutional holders: Assenagon Asset Management S.A. ($3.2M), Westmount Partners, LLC ($1.0M), Victrix Investment Advisors ($269,586), GAMMA Investing LLC ($171,901), Versant Capital Management, Inc ($115,763). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Assenagon Asset Management S.A. | $3.2M | 40,927 | Added |
| 2 | Westmount Partners, LLC | $1.0M | 12,961 | Hold |
| 3 | Victrix Investment Advisors | $269,586 | 3,400 | New |
| 4 | GAMMA Investing LLC | $171,901 | 2,168 | Added |
| 5 | Versant Capital Management, Inc | $115,763 | 1,460 | Trimmed |
| 6 | HARBOR INVESTMENT ADVISORY, LLC | $111,561 | 1,407 | New |
| 7 | CoreCap Advisors, LLC | $29,337 | 370 | Hold |
| 8 | EASTERN BANK | $23,787 | 300 | Hold |
| 9 | Cedar Mountain Advisors, LLC | $17,682 | 223 | Hold |
| 10 | CX Institutional | $16,000 | 203 | Added |
| 11 | MassMutual Private Wealth & Trust, FSB | $7,136 | 90 | Trimmed |
| 12 | MJT & Associates Financial Advisory Group, Inc. | $1,190 | 15 | New |
| 13 | 3 FACTOR INDEXING, LLC | $159 | 2 | Hold |
| 14 | CONGRESS ASSET MANAGEMENT CO | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30