ToplineElon Musk escalated his public attacks on President Donald Trump Monday, suggesting his administration withheld findings about the federal investigation into Jeffrey Epstein, as their whirlwind friendship continues to devolve into a brutal back-and-forth on their respective social media platforms.

Tesla stock fell almost 7% in premarket trading on Monday after Musk announced a new political party.Tesla investors are frustrated with his political involvement, wrote analyst Dan Ives.Musk's feud with Trump makes investors worry about Tesla's future,

Shares in Tesla tanked by as much as 7.6% in pre-market trade Monday after its CEO Elon Musk said he is forming a new American political party, provoking an irate response from US President Donald Trump.