Nvidia's market cap jumped above $3 trillion after announcing a chip deal with Saudi Arabia's Humain, a tech firm.Nvidia stock surged as much as 6.4% on Monday, reaching a market cap of $3.16 trillion, the highest since February.The partnership involves Nvidia providing advanced chips for an AI buildout in Saudi Arabia using 18,000 GB300 Grace Blackwell chips.This surge marks Nvidia's return to the $3 trillion market capitalization club after experiencing a decline earlier in the year.