Market Cap Chart

View Market Cap for AON.
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Sep '18
Jan '19
May '19
 
285.00
270.00
255.00
240.00
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Historical Market Cap Data

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Date Value
September 11, 2026 64.17B
September 10, 2026 65.25B
September 09, 2026 64.59B
September 08, 2026 66.95B
September 04, 2026 68.50B
September 03, 2026 69.32B
September 02, 2026 70.15B
September 01, 2026 69.18B
August 31, 2026 68.16B
August 28, 2026 75.34B
August 27, 2026 74.11B
August 26, 2026 75.04B
August 25, 2026 75.22B
August 24, 2026 76.13B
August 21, 2026 75.28B
August 20, 2026 74.61B
August 19, 2026 73.87B
August 18, 2026 72.76B
August 17, 2026 73.61B
August 14, 2026 75.44B
August 13, 2026 75.70B
August 12, 2026 74.70B
August 11, 2026 75.57B
August 10, 2026 75.68B
August 07, 2026 75.96B
Date Value
August 06, 2026 76.48B
August 05, 2026 76.31B
August 04, 2026 75.61B
August 03, 2026 75.82B
July 31, 2026 76.44B
July 30, 2026 77.71B
July 29, 2026 79.96B
July 28, 2026 80.83B
July 27, 2026 77.84B
July 24, 2026 76.68B
July 23, 2026 75.43B
July 22, 2026 74.69B
July 21, 2026 76.19B
July 20, 2026 76.91B
July 17, 2026 77.85B
July 16, 2026 78.15B
July 15, 2026 75.29B
July 14, 2026 76.08B
July 13, 2026 77.88B
July 10, 2026 75.67B
July 09, 2026 75.38B
July 08, 2026 75.79B
July 07, 2026 76.28B
July 06, 2026 75.66B
July 02, 2026 75.78B

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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