Tesla stock is now down over 40% in 2025. Is it time to buy?Investors in Tesla (TSLA -4.95%) are a bundle of nerves now. The electric vehicle (EV) stock sank 11.5% in March after dropping 28% in the previous month, according to data provided by S&P Global Market Intelligence. And the bloodbath isn't over yet -- Tesla stock is down another 12.8% already so far in April and a staggering 44% in 2025, as of this writing.March was a brutal month, as it hit Tesla from all sides. Declining sales, leadership concer ...