Nvidia (NVDA 0.75%) is back as the most valuable company in the world, and it just hit a crucial milestone. It has become the first company to hit a $4 trillion in value. Let's see why investors are getting more excited about it and why it can soar higher.Leading in AINvidia has been a successful company for decades, but its products have historically been geared toward the gaming industry. It became a household name when ChatGPT launched in 2022, forever changing how the world interacts with artificial int ...