I've been watching the US stock market recently, and many teachers in the group have been talking about NVDA and TSLA. These two have really been volatile lately, moving several points up and down every day. Actually, looking at the big picture, some say AI has peaked, while others say electric vehicles still have a second spring. Anyway, both bulls and bears are taking sides. I see that more people are playing these two in spot and futures. Actually, when tracking these stocks, there's a tool that has always been useful—CFD (Contract for Difference).