Apple became the first publicly traded business to exceed a $1 trillion valuation in intraday trading in August 2018.
On August 2, 2018, Apple’s share price briefly reached the level required for its total market capitalization to exceed $1 trillion during the trading session. The company’s shares later closed just below or around the threshold depending on the precise calculation and data source, so reports often distinguish the intraday event from the later confirmed closing milestone.
Apple’s valuation was powered by the iPhone, which had become a global consumer-electronics platform, and by growing revenue from services and accessories. Investors also valued the loyalty of Apple’s customer base and the integration among its devices and software.
Amazon became the second U.S. company to reach $1 trillion, followed by Microsoft and Alphabet. These milestones helped popularize market capitalization as a measure of corporate scale.