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Ionis Pharmaceuticals Inc stock is traded at $75.19, with a volume of 42,000. It is up +0.55% in the last 24 hours and up +3.69% over the past month. Ionis Pharmaceuticals is the leading developer of antisense technology to discover and develop novel drugs. Its broad clinical and preclinical pipeline targets a wide variety of diseases, with an emphasis on cardiovascular, metabolic, neurological, and rare diseases. Ionis and Biogen brought Spinraza to market in 2016 as a treatment for spinal muscular atrophy, and Biogen launched ALS drug Qalsody in 2023. Ionis brought two additional drugs to market via its cardiovascular-focused subsidiary Akcea, including ATTR amyloidosis drug Tegsedi (2018) and cardiology drug Waylivra (Europe, 2019). Ionis and AstraZeneca launched polyneuropathy drug Wainua in 2024. Ionis marked its first two independent launches in 2025 for Tryngolza (for FCS) and Dawnzera (for HAE).
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Previous Close:
$75.56
Open:
$76
24h Volume:
42,000
Relative Volume:
0.02
Market Cap:
$12.43B
Revenue:
$1.06B
Net Income/Loss:
$-326.58M
P/E Ratio:
-35.77
EPS:
-2.1022
Net Cash Flow:
$-977.73M
1W Performance:
+2.89%
1M Performance:
+3.69%
6M Performance:
-8.13%
1Y Performance:
+130.37%
1-Day Range:
Value
$74.80
$76.21
1-Week Range:
Value
$73.97
$76.80
52-Week Range:
Value
$32.00
$86.74

Ionis Pharmaceuticals Inc Stock (IONS) Company Profile

Name
Name
Ionis Pharmaceuticals Inc
Name
Phone
(760) 931-9200
Name
Address
2855 GAZELLE COURT, CARLSBAD, CA
Name
Employee
1,402
Name
Twitter
@ionispharma
Name
Next Earnings Date
2026-04-29
Name
Latest SEC Filings
Name
IONS's Discussions on Twitter

Compare IONS vs VRTX, REGN, ARGX, ALNY, RVMD

Stocks Price Market Cap Revenue Net Income Cash Flow EPS
IONS icon
IONS
Ionis Pharmaceuticals Inc
75.21 12.49B 1.06B -326.58M -977.73M -2.1022
VRTX icon
VRTX
Vertex Pharmaceuticals Inc
437.34 110.28B 12.34B 4.34B 3.71B 16.87
REGN icon
REGN
Regeneron Pharmaceuticals Inc
642.99 66.98B 14.92B 4.42B 3.79B 41.04
ARGX icon
ARGX
Argen X Se Adr
804.77 50.15B 4.16B 1.29B 734.26M 19.58
ALNY icon
ALNY
Alnylam Pharmaceuticals Inc
300.08 39.71B 4.29B 577.22M 641.34M 4.2086
RVMD icon
RVMD
Revolution Medicines Inc
153.46 32.22B 742.00K -1.37B -1.07B -7.0731

Ionis Pharmaceuticals Inc Stock (IONS) Upgrades & Downgrades

Date Action Analyst Rating Change
Apr-21-26 Initiated Canaccord Genuity Buy
Apr-10-26 Resumed Raymond James Outperform
Jan-28-26 Resumed Barclays Overweight
Oct-08-25 Upgrade JP Morgan Neutral → Overweight
Sep-26-25 Upgrade Goldman Sell → Neutral
Sep-03-25 Upgrade BMO Capital Markets Market Perform → Outperform
Jul-31-25 Upgrade Morgan Stanley Equal-Weight → Overweight
Jul-01-25 Upgrade Barclays Equal Weight → Overweight
Apr-07-25 Initiated H.C. Wainwright Buy
Mar-31-25 Initiated Redburn Atlantic Neutral
Aug-02-24 Downgrade BMO Capital Markets Outperform → Market Perform
Jul-24-24 Upgrade Leerink Partners Market Perform → Outperform
Jul-16-24 Resumed Jefferies Buy
Jun-14-24 Upgrade Bernstein Underperform → Mkt Perform
Apr-10-24 Upgrade Wolfe Research Peer Perform → Outperform
Jan-02-24 Upgrade BofA Securities Neutral → Buy
Oct-23-23 Upgrade BofA Securities Underperform → Neutral
Sep-29-23 Initiated Raymond James Strong Buy
Jul-31-23 Upgrade Citigroup Neutral → Buy
Jun-07-23 Resumed Piper Sandler Overweight
May-04-23 Upgrade Citigroup Sell → Neutral
Mar-21-23 Initiated Bernstein Underperform
Dec-21-22 Downgrade Morgan Stanley Overweight → Equal-Weight
Sep-09-22 Resumed Morgan Stanley Overweight
Jul-18-22 Resumed Oppenheimer Outperform
Mar-31-22 Resumed Piper Sandler Overweight
Mar-01-22 Initiated Citigroup Sell
Mar-01-22 Initiated Guggenheim Buy
Feb-01-22 Downgrade BofA Securities Buy → Underperform
Dec-14-21 Upgrade William Blair Mkt Perform → Outperform
May-07-21 Upgrade UBS Sell → Neutral
Mar-01-21 Upgrade Barclays Underweight → Equal Weight
Dec-16-20 Initiated UBS Sell
Dec-15-20 Upgrade Cowen Market Perform → Outperform
Sep-14-20 Resumed JP Morgan Neutral
Sep-02-20 Initiated The Benchmark Company Hold
Jun-01-20 Resumed Oppenheimer Outperform
May-13-20 Initiated RBC Capital Mkts Outperform
Mar-05-20 Initiated Citigroup Buy
Dec-13-19 Initiated Oppenheimer Outperform
Nov-13-19 Initiated BofA/Merrill Buy
Nov-07-19 Downgrade Morgan Stanley Equal-Weight → Underweight
Sep-10-19 Upgrade Bernstein Mkt Perform → Outperform
Aug-08-18 Reiterated Stifel Hold
Aug-07-18 Reiterated Stifel Hold
May-08-18 Downgrade Evercore ISI Outperform → In-line
Oct-06-17 Resumed Goldman Sell
Aug-17-17 Initiated Evercore ISI Outperform
Aug-09-17 Reiterated Stifel Hold
Mar-10-17 Downgrade Goldman Neutral → Sell
Dec-28-16 Reiterated BMO Capital Markets Outperform
Dec-27-16 Reiterated Leerink Partners Mkt Perform
View All

Ionis Pharmaceuticals Inc Stock (IONS) Latest News

pulisher
06:54 AM

Wolfe Research reiterates Ionis Pharmaceuticals stock rating ahead of rival data - Investing.com

06:54 AM
pulisher
May 25, 2026

Ionis Pharmaceuticals Eyes Big Year With TRYNGOLZA Decision, 5 Phase 3 Readouts - inkl

May 25, 2026
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May 25, 2026

Ionis Pharmaceuticals (IONS) Valuation Check After Biogen Releases Phase 2 CELIA Alzheimer’s Study Results - Sahm

May 25, 2026
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May 25, 2026

Ionis Pharmaceuticals, Inc. (IONS): Investor Outlook Highlights 33.56% Potential Upside - DirectorsTalk Interviews

May 25, 2026
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May 24, 2026

Understanding Momentum Shifts in (IONS) - Stock Traders Daily

May 24, 2026
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May 24, 2026

IONS Q1 earnings & sales beat, stock rises on raised '26 view - MSN

May 24, 2026
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May 23, 2026

Ionis Pharmaceuticals’ SWOT analysis: stock gains momentum on FDA approval - Investing.com India

May 23, 2026
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May 22, 2026

Ionis, Alnylam, BioMarin up as Citi starts at buy on catalyst and growth outlook - MSN

May 22, 2026
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May 21, 2026

IONS Stock Price, Quote & Chart | IONIS PHARMACEUTICALS INC (NASDAQ:IONS) - ChartMill

May 21, 2026
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May 20, 2026

Ionis Pharmaceuticals Inc : Citigroup Initiat - Moomoo

May 20, 2026
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May 20, 2026

Ionis Rises As Diranersen Phase 2 Spurs Biogen Registrational Plans - simplywall.st

May 20, 2026
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May 19, 2026

IONS Initiated Coverage by Citigroup -- Price Target Set at $115 - GuruFocus

May 19, 2026
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May 19, 2026

Citi Initiates Coverage on Biotech Stocks: Ionis (IONS), Alnylam (ALNY), BioMarin (BMRN) - GuruFocus

May 19, 2026
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May 19, 2026

Ionis Pharmaceuticals (IONS) Receives Bullish Target from Citi A - GuruFocus

May 19, 2026
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May 19, 2026

J.P. Morgan Initiates Ionis Pharmaceuticals(IONS.US) With Buy Rating, Announces Target Price $115 - Moomoo

May 19, 2026
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May 19, 2026

Ionis, Alnylam, BioMarin are new Buys at Citi (ALNY:NASDAQ) - Seeking Alpha

May 19, 2026
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May 19, 2026

Ionis Pharmaceuticals Inc at RBC Capital Markets Global Healthcare Conference Transcript - GuruFocus

May 19, 2026
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May 19, 2026

Citigroup initiates coverage of Ionis Pharmaceuticals (IONS) with buy recommendation - MSN

May 19, 2026
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May 18, 2026

Ionis Pharmaceuticals touts $3B TRYNGOLZA opportunity, pipeline readouts at conference - MSN

May 18, 2026
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May 18, 2026

Protein Synthesis Research Market to Reach $42.8 Billion by 2031, Driven by Surging CGT Investment - GlobeNewswire Inc.

May 18, 2026
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May 18, 2026

Ionis Pharmaceuticals Touts $3B TRYNGOLZA Opportunity, Pipeline Readouts at Conference - MarketBeat

May 18, 2026
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May 18, 2026

Ionis Pharmaceuticals, Inc. (IONS) Stock Analysis: Biotech Powerhouse with 35.77% Upside Potential - DirectorsTalk Interviews

May 18, 2026
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May 17, 2026

Biogen posts mid-stage trial data for Alzheimer’s candidate developed with Ionis - MSN

May 17, 2026
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May 17, 2026

Ionis Pharmaceuticals repriced drug ahead of key FDA decision, signals push into larger market - MSN

May 17, 2026
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May 15, 2026

Insider Sell: Brett Monia Sells Shares of Ionis Pharmaceuticals Inc (IONS) - GuruFocus

May 15, 2026
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May 15, 2026

Ionis Pharmaceuticals CEO Brett P. Monia sells $356,012 in shares By Investing.com - Investing.com South Africa

May 15, 2026
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May 15, 2026

Ionis Pharmaceuticals CEO Brett P. Monia sells $356,012 in shares - Investing.com

May 15, 2026
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May 15, 2026

Ionis (NASDAQ: IONS) CEO sells 4,536 shares after option exercise - Stock Titan

May 15, 2026
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May 15, 2026

A Quick Look at Today's Ratings for Ionis Pharmaceuticals(IONS.US), With a Forecast Between $105 to $115 - Moomoo

May 15, 2026
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May 15, 2026

CCORF Maintains Ionis Pharmaceuticals(IONS.US) With Buy Rating, Maintains Target Price $110 - Moomoo

May 15, 2026
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May 15, 2026

T. Rowe Price holds 6.16M IONS shares (NYSE: IONS) — 3.7% stake - Stock Titan

May 15, 2026
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May 15, 2026

Needham Maintains Ionis Pharmaceuticals(IONS.US) With Buy Rating, Maintains Target Price $105 - Moomoo

May 15, 2026
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May 15, 2026

Ionis validates ABL Bio’s Grabody-B to deliver RNA drugs to brainCHOSUNBIZ - Chosunbiz

May 15, 2026
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May 15, 2026

Ionis Pharmaceuticals, Inc.Common Stock (NQ: IONS - FinancialContent

May 15, 2026
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May 14, 2026

Biogen has seen enough — despite no dose response — to advance tau-directed therapy - FirstWord Pharma

May 14, 2026
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May 14, 2026

Capital World Investors holds 12.8% of Ionis (NASDAQ: IONS) - Stock Titan

May 14, 2026
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May 14, 2026

Biogen AD drug shows tau, cognition benefit, despite trial miss - BioWorld News

May 14, 2026
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May 14, 2026

Number of shareholders of Ionis Pharmaceuticals, Inc. – NASDAQ:IONS - TradingView

May 14, 2026
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May 14, 2026

Biogen plans registrational study for Alzheimer’s drug diranersen - Investing.com UK

May 14, 2026
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May 14, 2026

Ionis partner Biogen announces topline results from phase 2 Celia study of diranersen - marketscreener.com

May 14, 2026
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May 14, 2026

Biogen plans registrational study for Alzheimer’s drug diranersen By Investing.com - Investing.com Canada

May 14, 2026
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May 14, 2026

Ionis partner Biogen announces topline results from Phase 2 CELIA study of diranersen (BIIB080): first study to show reduction in tau pathology and cognitive benefit in patients with early Alzheimer’s disease - ChartMill

May 14, 2026
pulisher
May 14, 2026

Pinnacle Associates Ltd. Reduces Stake in Ionis Pharmaceuticals, Inc. $IONS - MarketBeat

May 14, 2026
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May 14, 2026

A Look At Ionis Pharmaceuticals (IONS) Valuation After Recent Share Price Moves - Yahoo Finance

May 14, 2026
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May 13, 2026

Ionis gets FDA breakthrough therapy status for zilganersen - MSN

May 13, 2026
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May 13, 2026

Avoiding Lag: Real-Time Signals in (IONS) Movement - Stock Traders Daily

May 13, 2026
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May 13, 2026

Brett Monia sells 160,773 IONS shares (IONS) via Form 144 - Stock Titan

May 13, 2026
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May 13, 2026

Oppenheimer Maintains an “Outperform Rating” on Pharmaceuticals, Inc. (IONS) - Yahoo Finance

May 13, 2026

Ionis Pharmaceuticals Inc Stock (IONS) Financials Data

Revenue

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Net Income

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Cash Flow

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EPS

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Ionis Pharmaceuticals Inc Stock (IONS) Insider Trading

Insider Trading Relationship Date Transaction Cost #Shares Value ($) #Shares Total
LOSCALZO JOSEPH
Director
May 04 '26
Option Exercise
48.74
77,289
3,767,309
113,619
LOSCALZO JOSEPH
Director
May 04 '26
Sale
75.06
77,289
5,801,226
36,330
KLEIN JOSEPH III
Director
May 01 '26
Option Exercise
47.11
10,111
476,329
21,125
KLEIN JOSEPH III
Director
May 01 '26
Sale
73.51
10,111
743,238
11,014
$29.62
price down icon 2.25%
$91.71
price down icon 0.55%
$107.44
price down icon 1.56%
$54.68
price up icon 0.46%
ONC ONC
$309.02
price up icon 0.66%
$152.58
price up icon 0.75%
Cap:     |  Volume (24h):