Tesla is one of the greatest bubbles, and it is popping now. The share price is based on nothing but hopes, as they are losing $9000 on every car they sell. Those hopes are not justified, since sales are declining.
If you don't sell, you will lose a good portion of your investment. Elon Musk is a lying huckster. The stock price assumes growth of 50% per year for many years, yet sales are declining everywhere.