Elon Musk spends $10 million of his own money on Tesla shares

Listen: Elon Musk's strange reactions on Tesla's earnings call

Listen: Elon Musk’s strange reactions on Tesla’s earnings call

Elon Musk doesn’t have much tolerance for critics of Tesla. And he just spent nearly $10 million of his own money to prove it.

The electric automaker’s CEO spent $9.9 million to buy 33,000 additional shares of Tesla (TSLA) at market prices. The purchase is unusual, since CEOs typically don’t buy shares of their company stock on the open market. Most of their shares come via stock grants from the company, or from exercising stock options. This was the first purchase of Tesla stock Musk has made in more than a year.