Apple was the first company to reach a $1 trillion market capitalization at a closing price in 2018.
Apple’s shares closed above the level required for a $1 trillion valuation on August 2, 2018. The closing-price distinction matters because share prices can briefly cross a threshold during a trading session and then finish below it.
Apple’s achievement was powered by the continuing success of the iPhone, together with growing revenue from services and other hardware categories. The company had already become one of the world’s most valuable businesses before the trillion-dollar milestone.
Other companies later passed $1 trillion, including Amazon, Microsoft, Alphabet, and Saudi Aramco. A company’s market cap is not the same as its enterprise value, which also considers debt and cash, so different rankings can appear depending on the valuation measure used.