It happens many times during the year that investors feel like a ticker is unstoppable and there is no limit to when an uptrend could last. Like everyone dealing with Tesla right now is either going mad looking at their gains or scared to death waiting to see the margin calls. Just a few weeks ago Moderna was creating the same kind of environment that Tesla is creating now. It looked unstoppable. Bulls were calling for $500, $750, even $1000 per share, and bears were covering left and right!
Now it's Tesla , there is no way of saying when this bull run is going to end. But one thing we know for sure is that it did end for Moderna eventually and it dropped 40%. So Tesla might still have some juice left in its run, but when it runs out of fuel make sure to setup your stop-loss pretty tight.