Apple Inc.'s shares climbed to a record high on Monday after early data showed that its latest iPhone 17 lineup is outperforming last year's iPhone 16 in key markets.

According to market research firm Counterpoint, initial sales in the US and China—Apple's two largest markets—are about 14% higher than those of the iPhone 16 series during the same launch period. The stronger demand has been attributed to improved camera technology, a more energy-efficient chip, and early adoption of Apple's new AI features.

The surge comes as Apple looks to revive smartphone growth amid slowing global demand. In China, where local rival Huawei has regained market share, early indicators suggest Apple's promotional pricing and trade-in programs have helped sustain momentum.

Shares of Apple rose more than

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