Before that 8X rise, though, stock price was basically unchanged since 2014. While revenue in that period has grown 10X. So you could make a reasonable argumen

Before that 8X rise, though, stock price was basically unchanged since 2014. While revenue in that period has grown 10X. So you could make a reasonable argument that the huge stock price appreciation in the last 12 months was in fact a re-pricing to reflect that the stock market now believes Tesla has a decent shot at becoming one of the world's leading tech companies. It doesn't reflect that something magical has happened in the last two years; something good has happened in the last 6 years and the stock market at large has only recently realized this.