Tesla’s Price-to-Earnings Ratio Is Nuts Support CleanTechnica's work through a Substack subscription or on Stripe. A couple of weeks ago, when I wrote about Tesla’s stock price dropping 20% in 6 months, a reader commented: “Tesla down 20% in the past 6 months and the P/E is still over 300. That is not sustainable.” Another commenter showed in more detail why this was crazy: Price to earnings ratio...