Ionis Pharmaceuticals

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About IONS

Ionis Pharmaceuticals, Inc. engages in the development and commercialization of human therapeutic drugs using antisense technology. The company was founded by Stanley T. 

CEO
Brett P. Monia
CEOBrett P. Monia
Employees
1,402
Employees1,402
Headquarters
Carlsbad, California
HeadquartersCarlsbad, California
Founded
1989
Founded1989
Employees
1,402
Employees1,402

IONS Key Statistics

Market cap
7.30B
Market cap7.30B
Price-Earnings ratio
-12.75
Price-Earnings ratio-12.75
Dividend yield
—
Dividend yield—
Average volume
2.72M
Average volume2.72M
High today
$45.40
High today$45.40
Low today
$43.50
Low today$43.50
Open price
$45.02
Open price$45.02
Volume
5.01M
Volume5.01M
52 Week high
$86.74
52 Week high$86.74
52 Week low
$42.08
52 Week low$42.08

Stock Snapshot

With a market cap of 7.3B, Ionis Pharmaceuticals(IONS) trades at $44.02. The stock has a price-to-earnings ratio of -12.75.

During the trading session on 2026-10-22, Ionis Pharmaceuticals(IONS) shares reached a daily high of $45.40 and a low of $43.50. At a current price of $44.02, the stock is +1.2% higher than the low and still -3.0% under the high.

Trading activity shows a volume of 5.01M, compared to an average daily volume of 2.72M.

Over the past 52 weeks, Ionis Pharmaceuticals(IONS) stock has traded between a high of $86.74 and a low of $42.08.

Over the past 52 weeks, Ionis Pharmaceuticals(IONS) stock has traded between a high of $86.74 and a low of $42.08.

IONS News

TipRanks 9h
Ionis treatment of Dravet syndrome granted FDA orphan status

Ionis Pharmaceuticals (IONS) was granted FDA orphan designation for a treatment of Dravet syndrome, according to a post on the agency’s website. Published firs...

Investing.com 11h
Ionis Pharmaceuticals stock price target maintained at $100 by H.C. Wainwright on HBV approval - Investing.com

...

Ionis Pharmaceuticals stock price target maintained at $100 by H.C. Wainwright on HBV approval - Investing.com
TipRanks 1d
Ionis boosted by FDA approval of hepatitis B therapy

Ionis Pharmaceuticals ( (IONS) ) just unveiled an update. On October 20, 2026, Ionis reported that partner GSK had secured U.S. FDA approval for HIBSAGO (bepir...

Analyst ratings

86%

of 28 ratings
Buy
85.7%
Hold
14.3%
Sell
0%

More IONS News

TipRanks 1d
Analyst Raises Ionis Price Target to $66 on Strong Tryngolza Launch and Undervalued sHTG Opportunity

Ionis Pharmaceuticals, the Healthcare sector company, was revisited by a Wall Street analyst today. Analyst David Lebowitz from BMO Capital upgraded the rating...

TipRanks 2d
Ionis Pharmaceuticals partner GSK announces FDA approval of Hibsago

Ionis Pharmaceuticals (IONS) partner GSK (GSK) announced that the FDA has approved Hibsago for the treatment of chronic hepatitis B, or CHB, virus infection in...

Simply Wall St 4d
Ionis Pharmaceuticals Shares Dropped, So What Is Behind The Latest Attention?

Ionis Pharmaceuticals (IONS) just picked up a key regulatory boost in Europe, with the EMA’s CHMP issuing a positive opinion to extend TRYNGOLZA’s indication fo...

Ionis Pharmaceuticals Shares Dropped, So What Is Behind The Latest Attention?
TipRanks 6d
Amprius, Viking, Regeneron, Ionis, Crispr Trending With Analysts

Analysts are intrested in these 5 stocks: ( (AMPX) ), ( (VKTX) ), ( (REGN) ), ( (IONS) ) and ( (CRSP) ). Here is a breakdown of their recent ratings and the rat...

TipRanks 7d
Ionis Pharmaceuticals says CHMP adopts positive opinion on tryngolza

Ionis Pharmaceuticals (IONS) announced that the Committee for Medicinal Products for Human Use of the European Medicines Agency has adopted a positive opinion r...

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