DeepSeek took a bite out of semiconductor, other tech, as well as nuclear power stocks today. Many of these AI plays dropped by double-digit percentage points, and Nvidia fell 17%. Other than the impact of the largest US stock nearly entering a bear market in one day, plus some collateral damage in other large stocks, the broader market held up just fine. The S&P 500 fell less than 1.5%, the Dow rose 0.7%, and the CBOE volatility index (VIX) finished the day at a historically low 18.0.