Elon Musk is a billionaire many times over, but he's not exactly a darling of his shareholders today.
That's because the price of Tesla stock plunged 10.3 percent after the mercurial tech tycoon tweeted that the share price was too high.
It's still at the astronomical figure of US$701.32.
The market capitalization of the electric vehicle maker and energy company is US$130 billion.
That wasn't the only newsworthy comment today from the SpaceX founder and PayPal cofounder.
He also declared that he was selling all of his worldly possessions, save a house that was once owned by actor Gene Wilder.
And he confessed that Grimes, his Vancouver-raised musician girlfriend, is mad at him.
Musk has been with Grimes for a couple of years. They're expecting their first child in early May, according to Rolling Stone.
In today's tweetstorm, Musk also recited some words from the U.S. national anthem, "The Star Spangled Banner".
It came after he had been tweeting in previous days that Americans' freedom was being taken away by public-health measures designed to curb the spread of COVID-19.