DOSSIER · 13F Holders · Q4 2025
IONS 0 04/01/26
IONIS PHARMACEUTICALS INC
3 institutions still hold IONIS PHARMACEUTICALS INC as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.
CUSIP 462222AD2·3 13F holders·last filed Dec 31, 2025
AI Holders Summary · Q4 2025
3 institutions reported IONS 0 04/01/26 in Q4 2025. D. E. Shaw & Co., Inc. leads at 99.4% of the visible book.
Top holders
Sorted by position value. Source: SEC EDGAR 13F-HR filings.