IONIS PHARMACEUTICALS INC (IONS) Institutional Ownership and Insiders Activity
IONIS PHARMACEUTICALS INC (IONS) is widely held by institutional investors, with 473 firms reporting positions valued at approximately $12.22B based on SEC Form 13F filings for the quarter ended June 30, 2026.
Capital World Investors is the largest disclosed holder, reporting approximately $1.72B in IONS holdings in its latest filing.
Recent insider activity includes 8 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.
Institutional Holders
473
Total Reported Value
$12.22B
Largest Holder
Capital World Investors
Largest Position
$1.72B
Insider Transactions (90d)
8
Latest Filing Quarter
Q2 2026
New Institutional Positions
69
Funds Exiting Positions
59
Top Institutional Owners
View all- Capital World Investors$1.72B
- Blackrock, Inc.$848.77M
- Fmr Llc$712.42M
- Vanguard Portfolio Management Llc$623.18M
- Wellington Management Group Llp$606.68M
IONS News
All news- Privium Fund Management B.V. Q2 2026: Major Investments in Real Estate Tech & Biopharma Stocks
Aug 10, 2026 · valut.ai
- Tweedy Browne Q2 2026 Portfolio Analysis: Major Buys and Sales Observed
Aug 10, 2026 · valut.ai
Related IONS Institutional Insights:
- IONS 13F Institutional Holders
- IONS Superinvestors
- IONS Institutional Ownership Changes
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- IONS Insider Trading & SEC Form 4 Activity
- IONS Articles
- Top Institutional Investor Stock Rankings