After joining the $1 trillion market capitalization club at the end of 2021, shares of electric vehicle (EV) juggernaut Tesla (NASDAQ: TSLA) have shifted into reverse. TSLA PE Ratio data by YCharts Should investors buy the stock now? Between macroeconomic headwinds like 40-year-high inflation, the Fed's consequent move to raise interest rates, and concerns about the war between Russia and Ukraine, the stock market has been in quite the frenzy.