Wall Street's main indexes opened lower on Monday as tariff tensions kept investors on edge, while Tesla shares slid after CEO Elon Musk announced his plans to launch a political party.

When Elon Musk, the chief executive of Tesla, asked his followers on X last week whether it was time to create a new political party, 80 percent answered “yes.” Wall Street seems to disagree. Tesla shares plunged 7 percent in early trading on Monday as investors registered dismay at Mr.

Elon Musk said over the weekend he was starting a new “America Party.” That’s “exactly the opposite direction” that Tesla shareholders want, an analyst says.