Chip manufacturers have witnessed the longest streak of growth in artificial intelligence since 2017.

The Philadelphia Semiconductor Index of US stocks rose by 0.32%, marking its ninth consecutive trading day of a 0.3% increase, the longest continuous increase since 2017. Companies with significant increases include AMD, Intel, and Applied Materials, while Nvidia and Broadcom experienced declines. Artificial intelligence infrastructure has been one of the most stable winners in the market for 2025, with Nvidia, Broadcom, TSMC, and Micron Technology driving a 65% increase in the chip index this year.