Apple shares rose after Counterpoint data showed the iPhone 17 lineup outsold the iPhone 16 by 14% in the US and China within its first 10 days.
The new iPhone's success comes after a challenging year for the company, with concerns over AI-related delays and tariffs in China and India.
CEO Tim Cook visited China to promote the iPhone 17's debut.
Apple's market cap has surpassed $3.9 trillion, making it the world's second-most valuable company, and is on track to become the third company to reach $4 trillion.
Author's summary: Apple's market cap nears $4 trillion.