Nvidia CEO Jensen Huang attends an event at COMPUTEX forum in Taipei, Taiwan June 4, 2024. Ann Wang | ReutersNvidia, long known in the niche gaming community for its graphics chips, is now the most valuable public company in the world.Shares of the chipmaker climbed 3.2% in midday trading on Tuesday, lifting the company's market cap to $3.33 trillion, surpassing Microsoft. Earlier this month, Nvidia hit a $3 trillion market cap for the first time, and passed Apple.Nvidia shares are up more than ...