Tesla’s board of directors was urged to put its foot down and rein in CEO Elon Musk after the electric car maker’s stock tanked following the mercurial mogul’s vow to launch a rival political party. Wedbush Securities analyst Daniel Ives penned a bluntly worded note on Tuesday calling on the board to “act now” and establish formal boundaries around Musk’s political activities,

When the Wedbush tech analyst lobbied Tesla's board to form a special board oversight committee, the CEO's response was as immediate as it was dismissive.

"Shut up, Dan," Elon Musk responded after Wedbush Securities' Dan Ives called for Tesla's ( NASDAQ: TSLA) board of directors to set ground rules for its CEO's political endeavors.