Ionis Pharmaceuticals Inc.

IONS | NASDAQ

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$45.63

+$0.73 (+1.63%)

Sep 22, 2026, 2:13 PM ET · Market open

Overview Rating Statistics Financials Earnings Analysts Ownership Profile

Institutions Insiders Congress

Institutional Ownership

Net Inflow

Dollar & Volume Weighted

Total Institutions

526

Total Ownership

104.69%

Capital Flow

+$500.33M

Shares Change

+2.35M

Ownership Distribution

Institutions (99.99%)

Others (0.01%)

Institutional Sentiment

Overall: bullish

Equity Sentiment & Activity

bullish

New Positions

Increased Positions

255

Reduced Positions

155

Closed Positions

New (72)

Increased (255)

Reduced (155)

Closed (72)

Options Sentiment & Activity

neutral

Put/Call Ratio

1.023

Call Flow

1,620,754

Put Flow

1,657,700

Calls (49%)

Puts (51%)

Super Investors

4 Investors

Super Investor / Fund	Ownership	Portfolio Weight	Shares	Market Value
William H. Browne Tweedy Browne Co LLC	1.38% +0.21%	10.05%	2.28M	102.39M
Ken Fisher Fisher Asset Management LLC	0.08% -3.08%	< 0.01%	137.18K	6.16M
Joel Greenblatt Gotham Asset Management LLC	0.07% +22.52%	0.01%	121.25K	5.44M

Top Shareholders

Top 10 Own 59.14%

Institution	Ownership	Portfolio Weight	Shares	Market Value
FMR LLC	14.89% +0.23%	0.10% +0.03%	24.56M +2.01%	1.84B -3.17%
Capital World Investors	12.85% +15.90%	0.22% +12.32%	21.19M +17.96%	1.59B +11.96%
Blackrock, Inc.	6.33% -3.64%	0.01% -3.78%	10.44M -1.93%	784.13M -6.91%

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