Tesla experienced its largest one-day market value drop on record, plummeting over 14% and erasing $153 billion amid an escalating feud between Donald Trump and Elon Musk. Trump threatened to cut government contracts with Musk’s companies, leading to a broader stock market decline, with the S&P 500 and Nasdaq Composite also falling. The tensions come as Musk’s public political interventions have negatively impacted Tesla’s sales in Europe, prompting market analysts to express concern over the rapid devaluation of the brand.