Ionis Pharmaceuticals, Inc. (IONS)

NASDAQ

$44.95

$-0.48

(-1.06%)

Regular Market

Ionis Pharmaceuticals, Inc. (IONS) Live Price Chart

Last updated: ⁦2026-10-21 16:03:40⁩. Prices reflect the latest regular market data. Stock price data is sourced from Massive.

Summary

Ionis Pharmaceuticals, Inc. (IONS) operates in the PHARMACEUTICAL PREPARATIONS sector and is listed on NASDAQ. The stock is currently priced at $44.95, with a market capitalization of $7.38B and a P/E ratio of --. Over the past 52 weeks, its price has ranged from $42.08 to $86.74. This page covers its latest market performance, valuation, price trends and company information.

Key Market Data

Market Cap	$7.38B
Open	$45.55
Day's High	$86.74
Day's Low	$19.59
Previous Close	$45.40
Volume	573.11K
Average Volume	3.19M
P/E Ratio	--
52-Week High	$86.74
52-Week Low	$42.08
Dividend Yield	--
Earnings Date	2001-12-30

Ionis Pharmaceuticals, Inc. (IONS) Stock Price Today

Ionis Pharmaceuticals, Inc. (IONS) is currently trading at $44.95 as of 2026-10-21 15:46:50, down 1.00% ($0.45) from the previous close of $45.40

During today's regular trading session, IONS has traded between $19.59 and $86.74, with a trading volume of 573.11K shares. The current price is near the middle of today's range.

Ionis Pharmaceuticals, Inc. (IONS) 7-Day Stock Price Change

Over the past seven days, Ionis Pharmaceuticals, Inc. (IONS) moved from $43.67 to $44.95, representing a gain of 2.92% ($1.27).

The stock traded between $42.08 and $46.50 during the period. The latest price is near the middle of the 7-day range, indicating moderate upward.

The average daily volume was 2.39 million shares, down versus the previous seven-day period, indicating lower trading activity.

IONS 52-Week Price Position

Position in Range: 6.4%

52W Low$42.08

52W High$86.74

IONS is currently trading at $44.95, placing it 6.4% of the way from its 52-week low of $42.08 to its 52-week high of $86.74. This percentage reflects the stock's relative position within its 52-week trading range, not its valuation or future performance.

What is Ionis Pharmaceuticals, Inc. (IONS)?

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).

Ionis Pharmaceuticals, Inc. Information

Industry	PHARMACEUTICAL PREPARATIONS
Employees	1402
CEO	Brett P. Monia
Founded	1989
Exchange	NASDAQ
Company Website	https://www.ionis.com

How to Buy Ionis Pharmaceuticals, Inc. (IONS) Stock on MEXC

Eligible investors can buy real shares of Ionis Pharmaceuticals, Inc. (IONS) through MEXC RealStocks. Follow these three steps to open a RealStocks account, transfer USDT, and place a US stock order.

Step 1: Open and Verify Your RealStocks Account

Log in to the MEXC App, go to Trade → RealStocks, and select Open Account. Complete the required account-opening and identity verification process with MEXC's partner licensed broker.

Step 2: Transfer USDT to Your RealStocks Account

Go to Wallets → RealStocks and transfer USDT from your Spot Account to your RealStocks Account. RealStocks are quoted in USD, while account funding can be completed using USDT.

Step 3: Search for IONS and Place Your Order

Open the RealStocks trading page and search for IONS. Select a market or limit order, enter the price and quantity as required, review the order details, and submit your order. Once filled, the corresponding real shares will be held in your RealStocks Account.

Frequently Asked Questions (FAQ)

1.What is Ionis Pharmaceuticals, Inc. (IONS) stock price today?

Ionis Pharmaceuticals, Inc. (IONS) is currently trading at $ 44.95, down 1.00% ($0.45) from the previous close of $ 45.40. Intraday prices update in real time during regular trading hours.

2.Is IONS stock going up or down today?

As of 2026-10-21 15:46:50, IONS is trading at $ 44.95, down 1.00% ($0.45) from its previous close of $ 45.40. The stock has traded between $ 19.59 and $ 86.74 during today’s regular session. Past price movements do not guarantee future results.

3.What is IONS pre-market price?

As of 2026-10-21 15:46:50, IONS is trading at $ 45.87 in pre-market trading, up 1.03% ($0.47) from the previous close of $ 45.40. Pre-market prices reflect trading activity before the regular session opens and may experience lower liquidity and higher volatility.

4.What is IONS after-hours price?

As of 2026-10-21 15:46:50, IONS is trading at $ 45.55 in after-hours trading, up 0.33% ($0.15) from the regular-session close of $ 45.40. After-hours prices may differ from the regular session’s opening price due to lower liquidity and wider bid-ask spreads.

5.Is IONS stock trading now?

IONS trades on the NASDAQ exchange during regular hours, Monday through Friday, 9:30 AM to 4:00 PM ET, excluding public holidays. Pre-market and after-hours trading are also available through select brokers outside these hours.

6.Where does IONS sit relative to its 52-week high and low?

Over the past 52 weeks, IONS has traded between a low of $ 42.08 and a high of $ 86.74. At $ 44.95, the stock is positioned 6.4% of the way from its 52-week low to its 52-week high, providing context for its current price within the one-year trading range.

7.What sector is Ionis Pharmaceuticals, Inc. in?

Ionis Pharmaceuticals, Inc. (IONS) operates in the PHARMACEUTICAL PREPARATIONS sector. Sector classification helps investors compare it with companies exposed to similar market trends and competitive conditions.

8.What is Ionis Pharmaceuticals, Inc.'s market capitalization and where is it listed?

Ionis Pharmaceuticals, Inc. is listed on the NASDAQ exchange with a market capitalization of $ 7.38B. Market cap reflects the total market value of all outstanding shares and is commonly used to classify stocks by size.

9.How is IONS valued in terms of P/E ratio and EPS?

IONS trades at a P/E ratio of --, based on trailing-twelve-month EPS of $ -3.40. P/E ratio compares the stock price to earnings per share and is a common starting point for assessing valuation relative to peers.

10.Does Ionis Pharmaceuticals, Inc. pay a dividend?

Ionis Pharmaceuticals, Inc. pays an indicated annual cash dividend of $ 0.00 per share, with a current dividend yield of 0.00% based on the latest share price. Dividend policies are subject to change at the board's discretion.