Seagate Technology Holdings (STX) Market Cap 2002–2026

As of April 28, 2026, Seagate Technology Holdings had a market cap of $129.72 billion, which decreased by 2.82% 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: Apr 28, 2026, 4:00 PM ET
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Seagate Technology Holdings PLC (STX)

🌍 Singapore 📈 NASDAQ 🏭 Technology 🏢 Technology Hardware, Storage & Peripherals
Latest Market Cap
$129.72B ▼ 2.82%
Jan 1, 2026
$58.81B ▲ 120.57%
1 Year Ago
$17.32B ▲ 648.96%
All-Time High
$133.49B ▼ 2.82%


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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.

📈 Seagate Technology Holdings Market Cap History by Year and Month

Seagate Technology Holdings Market Cap History by Year and Month
Year / MonthMarket Cap% Change
2026$129.72B▲ 120.57%
$129.72B▲ 47.81%
$87.76B▼ 1.33%
$88.94B▲ 0.14%
$88.82B▲ 51.03%
2025$58.81B▲ 221.84%
2024$18.273B▲ 2.17%
2023$17.885B▲ 64.64%
2022$10.863B▼ 56.19%

All market cap values reflect closing prices for the period shown.


📊 Seagate Technology Holdings Market Cap and Other Industry Peers

Below are selected companies from the Technology sector / subsector:

  1. $3.974T
  2. $160.05B
  3. $151.45B
  4. $147.91B
  5. $147.69B
  6. $133.99B
  7. $132.98B
  8. $132.56B
  9. $131.31B
  10. $129.72B
  11. $115.39B
  12. $110.73B
  13. $109.13B
  14. $98.3B
  15. $37.09B
  16. $23.44B
  17. $21.37B
  18. $18.04B
  19. $16.36B
  20. $15.79B

Data reflect the most recent market capitalization values available.

💡 What Is Market Capitalization and How Do We Calculate It?

For Seagate Technology Holdings PLC (STX), market capitalization represents the total market value of the company’s publicly traded shares. It helps investors understand Seagate Technology Holdings’s size within the technology sector and compare it with other companies in the same industry.

In most cases, market capitalization is calculated by multiplying the current share price by the number of basic shares outstanding. Basic shares represent the actual number of common shares that currently exist, without including potential future shares from employee stock options, RSUs, warrants, or convertible securities. For example, if Seagate Technology Holdings had one million basic shares and each traded at $50, its market capitalization would be $50 million.

Formula:
Market Cap = Share Price × Shares Outstanding

The value of Seagate Technology Holdings’s market capitalization changes throughout the trading day because it mainly depends on the current share price. The number of shares outstanding typically remains stable unless the company issues new shares, buys back its own stock, or grants stock options to employees.

Based on the latest data, Seagate Technology Holdings had a market capitalization of $129.72 billion, placing it in the large-cap category within the technology industry.

Disclaimer: Despite all efforts, there may still be minor inaccuracies present in the data.