'Magnificent Seven' playbook: What to know about Tesla

Tesla (TSLA) shares have more than doubled this year, but does the EV maker’s stock fundamentals hold up or is it an investment based on faith in the company? The company is facing increasing competition from Chinese EV automaker BYD (BYDDF) and the upcoming release of its Cybertruck has yet to be announced. Yahoo Finance Tech Reporter Allie Garfinkle breaks down the playbook for Tesla.