Tesla Inc.’s stock was on the verge of a technical breakthrough last week, with investors brimming with hope that a return of Chief Executive Elon Musk to headquarters and promises that he’d stay for years to come would benefit the shares.

The feud between Trump and Musk has led to a $150 billion drop in Tesla's market capitalisation, with shares falling 14%. This year, Tesla has faced significant losses amid decreasing demand and political distractions,

Elon Musk’s bitter falling-out with President Trump could be costly for Tesla. As long as he is persona non grata in the Trump administration, Mr. Musk, the chief executive of Tesla, will struggle to persuade Republicans not to gut climate policies worth billions of dollars to the electric car and battery company.