If Tesla's stock price reaches an extremely high level, short sellers face significant risks — this is not a hypothetical but a lesson from history. Records show that some large short positions have caused losses in the hundreds of millions of dollars, and even well-funded institutions find it difficult to withstand the adverse fluctuations of extreme market conditions. This reminds us of a fundamental trading rule: market volatility often exceeds expectations. Short selling is essentially a bet on the future, and the market is full of uncertainties. The cost of a single margin call can be severe, which is why many seasoned investors repeatedly emphasize: do not easily short popular assets. Especially in highly liquid and highly watched targets, price movements can be more aggressive than your risk management models predict. Instead of betting on the direction, it’s better to respect the market’s unpredictability.