Ionis Pharmaceuticals Inc logo

Ionis Pharmaceuticals Inc

NEW
NAS:IONS (USA)  
$ 44.44 -2.31 (-4.94%) 10:08 PM EST
At Loss
P/B:
16.71
Market Cap:
$ 7.39B
Enterprise V:
$ 6.94B
Volume:
7.30M
Avg Vol (2M):
2.96M
Trade In:
Volume:
7.30M
At Loss
Avg Vol (2M):
2.96M

IONS Number of Guru Trades

To

IONS Volume of Guru Trades

To

IONS Daily Net ETF Flow

Dollars ETFs put into or pulled out of IONS each day, net of sells, against the share price.

IONS Daily Net ETF Share Flow

Shares ETFs added or removed each day, net, as a share of IONS's shares outstanding, against the share price.

Gurus Latest Trades with NAS:IONS

No Available Data

NAS:IONS is held by these investors

Guru
Portfolio Date
Current Shares
% of Shares outstanding
% of Total Assets Managed
Comment
Tweedy Browne
2026-03-31
2,275,625
1.380
13.57%
Reduce -7.68%
Ken Fisher
2026-06-30
137,184
0.080
0%
Reduce -3.08%
Joel Greenblatt
2026-06-30
121,252
0.070
0.02%
Add 22.52%
Jefferies Group
2026-06-30
38,665
0.020
0.02%
Reduce -34.54%
Ron Baron
2026-06-30
14,000
0.010
0%
Reduce -68.89%
Total 5

Top ETF Buyers

What each ETF bought and sold in this stock over the period, from the same daily data as the charts above. Sorted by net amount, so sorting ascending brings the heaviest sellers to the top.

ETF
ETF Name
Net Amount $Mil
Buy Amount $Mil
Sell Amount $Mil
Net Share Change
# of Days Traded
Current Shares
20/Page
Total 0

ETF Ownership

Every ETF holding the stock, largest position first. Change covers the gap between each fund's last two reports, so a fund that held still shows none.

ETF
ETF Name
Shares
% of Shares Out
Change (Last Report)
Action
Report Date
Price Range
20/Page
Total 0

Guru Commentaries on NAS:IONS

2025 Q3
Tweedy Browne · 13.57% of portfolio · Reduce -7.68%
What the manager wrote

Ionis Pharmaceuticals, a biotechnology company held in three of our four Funds, was another strong contributor following encouraging clinical results that helped renew investor confidence in its research pipeline. This positive momentum indicates a robust outlook for the company, suggesting that its innovative approaches in drug development are gaining traction in the market. The renewed investor confidence reflects the potential for Ionis to capitalize on its research advancements, positioning it favorably within the biotechnology sector.

2026 Q2
ARTSX APDSX APHSX MCommentary 0726 vR
What the manager wrote

Ionis Pharmaceuticals is a biotechnology company specializing in RNA-targeted therapies for patients with significant unmet medical needs. The company is transitioning toward commercializing more of its own medicines, allowing it to potentially capture greater long-term value from its innovation. Recent results exceeded expectations, supported by stronger-than-expected commercial performance, while management reaffirmed its expectation of reaching cash flow breakeven in 2028. We continue to see attractive long-term opportunities across the company's commercial portfolio and pipeline.

News about NAS:IONS

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