Ionis Pharmaceuticals (IONS) Market Cap 1991–2026

As of November 13, 2026, Ionis Pharmaceuticals had a market cap of $4.836 billion, which increased by 6.40% compared to the previous trading day. Market capitalization, often referred to as market cap, represents the total value of a company's outstanding shares on the stock market and is a common measure of its overall size and valuation.

Data updated: Nov 13, 2026, 4:00 PM ET
Ionis Pharmaceuticals logo

Ionis Pharmaceuticals Inc. (IONS)

🌍 United States 📈 NASDAQ 🏭 Health Care 🏢 Biotechnology
Latest Market Cap
$4.836B ▲ 6.40%
Start of 2026
$12.81B ▼ 62.25%
1 Year Ago
$11.31B ▼ 57.24%
All-Time High
$14.32B ▼ 66.23%


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Note: Each point on the chart represents the market capitalization at the end of the trading day.
Source: Data compiled from EDGAR filings, Bloomberg and Yahoo Finance.

📈 Ionis Pharmaceuticals Market Cap History by Year and Month

Ionis Pharmaceuticals Market Cap History by Year and Month
Year / MonthMarket Cap% Change
2026$4.836B▼ 62.25%
$4.836B▼ 32.92%
$7.209B▼ 2.53%
$7.396B▼ 26.03%
$9.998B▲ 16.59%
$8.575B▼ 34.79%
$13.15B▲ 4.03%
$12.64B▲ 2.27%
$12.36B▼ 0.32%
$12.4B▼ 5.63%
$13.14B▼ 1.87%
$13.39B▲ 4.53%
2025$12.81B▲ 132.04%
2024$5.521B▼ 23.94%
2023$7.258B▲ 35.28%
2022$5.365B▲ 24.86%
All market cap values reflect closing prices for the period shown.

📊 Ionis Pharmaceuticals Market Cap and Other Industry Peers

Below are selected companies for comparison based on industry, sub-industry, and sector:

  1. $11.32B
  2. $11.08B
  3. $10.88B
  4. $9.93B
  5. $9.46B
  6. $9.17B
  7. $9.04B
  8. $8.54B
  9. $7.97B
  10. $7.81B
  11. $6.74B
  12. $6.61B
  13. $5.3B
  14. $5.19B
  15. $4.97B
  16. $4.84B
  17. $4.09B
  18. $3.73B
  19. $1.72B
  20. $1.64B

Data reflect the most recent market capitalization values available.

Note: Market capitalization figures are based on available sources and may differ slightly from actual values, particularly for historical data.