Which company became the first public corporation valued above $500 billion in market capitalization?

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Apple became the first public corporation valued above $500 billion in market capitalization.

Apple passed the $500 billion mark in February 2012 as investors responded to strong growth in the iPhone and iPad businesses. The company’s share price rose sharply during a period when Apple was expanding its global retail presence, increasing iPhone sales, and building a powerful ecosystem around its devices and software.

Market capitalization is found by multiplying the current share price by the number of shares outstanding. It therefore reflects investor expectations as well as the value of businesses already producing revenue. The $500 billion threshold was a milestone in Apple’s rise from a major technology company to a dominant global public corporation.

This historical record should not be confused with Apple’s later trillion-dollar milestones. Apple crossed $1 trillion in 2018, $2 trillion in 2020, and briefly touched $3 trillion in 2022. Those numbers describe changing market values, not fixed measures of company size.

Source: Wikipedia · fact-checked Oct. 2026

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