Merck (MRK) Market Cap 1985–2026

As of October 29, 2026, Merck had a market cap of $361.24 billion, which increased by 3.83% 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: Oct 29, 2026, 4:00 PM ET
Merck logo

Merck & Co Inc. (MRK)

🌍 United States 📈 NYSE 🏭 Health Care 🏢 Pharmaceuticals
Latest Market Cap
$361.24B ▲ 3.83%
Start of 2026
$261.26B ▲ 38.27%
1 Year Ago
$215.51B ▲ 67.62%
All-Time High
$386.22B ▼ 6.47%


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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.

📈 Merck Market Cap History by Year and Month

Merck Market Cap History by Year and Month
Year / MonthMarket Cap% Change
2026$361.24B▲ 38.27%
$361.24B▲ 0.70%
$358.72B▼ 1.66%
$364.77B▲ 13.44%
$321.55B▲ 1.32%
$317.36B▲ 8.23%
$293.22B▲ 8.74%
$269.66B▼ 9.33%
$297.4B▼ 2.85%
$306.13B▲ 11.85%
$273.69B▲ 4.76%
2025$261.26B▲ 3.89%
2024$251.485B▼ 8.97%
2023$276.257B▼ 1.78%
2022$281.258B▲ 45.17%
All market cap values reflect closing prices for the period shown.

📊 Merck Market Cap and Other Industry Peers

Below are selected companies from the Health Care sector / subsector:

  1. $1.293T
  2. $662.44B
  3. $540.93B
  4. $513.85B
  5. $371.87B
  6. $361.24B
  7. $262.22B
  8. $249.07B
  9. $205.52B
  10. $180.95B
  11. $170.69B
  12. $166.69B
  13. $155.54B
  14. $136.81B
  15. $125.42B
  16. $124.31B
  17. $119.58B
  18. $32.64B
  19. $29.39B
  20. $22.18B


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.