Ken Fisher's IONS Position Overview
Ken Fisher (via Fisher Asset Management, LLC) currently holds 141,615 shares of Ionis Pharmaceuticals, Inc. (IONS) worth $11.2 M, representing 0.00% of the portfolio. First purchased in 2025-Q3, this recently established position has been held for 2 quarters.
Based on recent 13F filings, Ken Fisher has initiated a new position in IONS, representing a fresh investment thesis on this company. Largest addition occurred in Q4 2025, adding 135,405 shares.
Analysis based on 13F filings available since 2013 Q2
Ken Fisher's Ionis Pharmaceuticals (IONS) Holding Value Over Time
Track share changes against reported price movement
Quarterly Ionis Pharmaceuticals (IONS) Trades by Ken Fisher
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | +135,405 | Add 2180.43% | 141,615 | $79.11 |
| Q3 2025 | +6,210 | New Buy | 6,210 | $65.42 |
Ken Fisher's Ionis Pharmaceuticals Investment FAQs
Ken Fisher first purchased Ionis Pharmaceuticals, Inc. (IONS) in Q3 2025, acquiring 6,210 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Ken Fisher has held Ionis Pharmaceuticals, Inc. (IONS) for 2 quarters since Q3 2025.
Ken Fisher's largest addition to Ionis Pharmaceuticals, Inc. (IONS) was in Q4 2025, adding 141,615 shares worth $11.2 M.
According to the latest 13F filing for Q4 2025, Ken Fisher's firm, Fisher Asset Management, LLC, owns 141,615 shares of Ionis Pharmaceuticals, Inc. (IONS), valued at approximately $11.2 M.
As of the Q4 2025 filing, Ionis Pharmaceuticals, Inc. (IONS) represents approximately 0.00% of Ken Fisher's publicly disclosed stock portfolio, making it one of their key holdings.
Ken Fisher's peak holding in Ionis Pharmaceuticals, Inc. (IONS) was 141,615 shares, as reported at the end of Q4 2025.