Market Cap Chart

View Market Cap for SIRI.
Upgrade now.
Sep '18
Jan '19
May '19
 
285.00
270.00
255.00
240.00
View Market Cap Chart
Start Trial

Historical Market Cap Data

View and export this data back to 1995. Start Trial.
Date Value
August 21, 2026 9.669B
August 20, 2026 9.567B
August 19, 2026 9.662B
August 18, 2026 9.645B
August 17, 2026 9.815B
August 14, 2026 9.591B
August 13, 2026 9.433B
August 12, 2026 9.584B
August 11, 2026 9.608B
August 10, 2026 9.699B
August 07, 2026 10.08B
August 06, 2026 10.07B
August 05, 2026 10.35B
August 04, 2026 10.36B
August 03, 2026 10.23B
July 31, 2026 9.982B
July 30, 2026 10.44B
July 29, 2026 10.98B
July 28, 2026 10.68B
July 27, 2026 10.52B
July 24, 2026 10.04B
July 23, 2026 10.07B
July 22, 2026 10.05B
July 21, 2026 10.21B
July 20, 2026 10.31B
Date Value
July 17, 2026 10.31B
July 16, 2026 10.52B
July 15, 2026 10.33B
July 14, 2026 10.24B
July 13, 2026 10.34B
July 10, 2026 10.25B
July 09, 2026 10.34B
July 08, 2026 10.20B
July 07, 2026 10.35B
July 06, 2026 10.36B
July 02, 2026 10.28B
July 01, 2026 10.09B
June 30, 2026 9.955B
June 29, 2026 9.825B
June 26, 2026 9.526B
June 25, 2026 9.327B
June 24, 2026 9.374B
June 23, 2026 9.435B
June 22, 2026 9.388B
June 18, 2026 9.418B
June 17, 2026 9.384B
June 16, 2026 9.361B
June 15, 2026 9.227B
June 12, 2026 9.247B
June 11, 2026 9.270B

Market Capitalization Definition

Market Capitalization measures the total value of a company based on their stock price multiplied by the shares outstanding. This metric is important because it gives you an idea of the size of a company, and how the size has changed over time. When studying companies from a relative basis, it would make sense to compare companies that have a similar market capitalization because factors like market share, economies of scale, and business models would also be similar.

Read full definition.

Market Cap Range, Past 5 Years

View Market Cap Range, Past 5 Years
Start Trial
--
Minimum
--
Maximum
--
Average
--
Median

Market Cap Benchmarks

Market Cap Related Metrics