Nvidia (NVDA) added to a weekly gain of more than 10% after Musk said on SpaceX's first public earnings call that the company will use Nvidia systems exclusively for its AI infrastructure and plans to deploy Vera Rubin NVL72 rack-scale systems on the ground and in space. The announcement sent Nvidia shares up more than 4% and put pressure on AMD and Intel, reinforcing market expectations for strong future GPU demand and keeping attention on Nvidia's market-cap race with Apple and Microsoft as the end of August approaches. The broader Philadelphia Semiconductor Index rose more than 8% over the same period as earlier fears over AI infrastructure spending and chip valuations eased, although investors are still watching HBM supply constraints after a report that Nvidia is testing a Rubin Ultra variant with a lower HBM configuration.