Intel rose more than 9% on Friday and sparked a jump in chip stocks after its upbeat forecast signaled that the personal computer market was rebounding from its quarters-long slump. Other chip firms such as AMD, Nvidia and Arm rose 1% to 2%. Under CEO Pat Gelsinger, Intel is trying to turn around its business by making heavy infrastructure investments that the firm hopes will give it an edge in chipmaking and allow it to compete with the likes of Taiwan's TSMC for foundry clients.