Nvidia, a titan in the AI and GPU industry, has been riding a wave of soaring demand for its chips. This is particularly due to generative AI applications. However, today's trading session has left investors wondering, "Why is Nvidia stock going down today?" The answer lies in the emergence of a significant new player. This player is Deepseek, and its groundbreaking AI chip is the R1. Analysts are now questioning whether Nvidia's dominance might be under threat.