Market Cap Chart

View Market Cap for SIRI.
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270.00
255.00
240.00
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Historical Market Cap Data

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Date Value
September 11, 2026 9.824B
September 10, 2026 9.731B
September 09, 2026 9.618B
September 08, 2026 9.706B
September 04, 2026 9.770B
September 03, 2026 10.03B
September 02, 2026 10.01B
September 01, 2026 9.308B
August 31, 2026 9.493B
August 28, 2026 9.618B
August 27, 2026 9.604B
August 26, 2026 9.608B
August 25, 2026 9.682B
August 24, 2026 9.588B
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
Date Value
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
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

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.

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Market Cap Range, Past 5 Years

View Market Cap Range, Past 5 Years
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