Nvidia has been red-hot, while Snowflake has been ice-cold. That could soon change. It's hard to deny that Nvidia and artificial intelligence (AI) have been the story of Wall Street through the first six months of 2024. Nvidia's meteoric rise from soaring demand for its AI chips has turned the stock into a multitrillion-dollar beast that has made shareholders very wealthy in a short amount of time. But even the best things don't last forever. I'm not predicting Nvidia's downfall, but it makes sense to start ...