IONS — Ionis Pharmaceuticals Inc.

Ownership history in Bellevue Group AG  ·  40 quarters on record

This page tracks every 13F SEC filing in which Bellevue Group AG reported a position in Ionis Pharmaceuticals Inc. (IONS). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
9.27% (2019 Q3)
Avg. % of fund
4.39%
First filed
2016 Q1
Last filed
2025 Q4
Quarters held
40
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 REDUCED 4,802,199 -1,442,252 -23.1% 7.20% $379.9M $79.11
2025 Q3 REDUCED 6,244,451 -1,608,747 -20.5% 8.49% $408.5M $65.42
2025 Q2 UNCHANGED 7,853,198 — 0% 6.84% $310.3M $39.51
2025 Q1 REDUCED 7,853,198 -15,502 -0.2% 5.31% $236.9M $30.17
36 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    IONS price (monthly, adj. close)

Other funds also holding IONS

As of 2025 Q4 — sorted by position size

Tweedy, Browne Co LLC 3Y 7Y 15.74% BOONE CAPITAL MANAGEMENT LLC 3Y 10.37% Tri Locum Partners LP 3Y 5.72% Orion Investment Co 5.43% Exome Asset Management LLC 4.41% Privium Fund Management B.V. 3Y 3.51% Sicart Associates LLC 3Y 7Y 3.43% SECTOR GAMMA AS 3Y 7Y 3.34% SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 3Y 7Y 2.41% Deep Track Capital, LP 3Y 2.4%
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