After shares of Tesla plunged by more than 10% on Tuesday, worsening a year-long sell-off, CEO Elon Musk reassured employees, saying this shouldn’t be “too bothered by stock market craziness.”

In email, the now-second richest man in the world told staffers that Tesla needs to “demonstrate continued excellent performance” and that “long-term, I believe very much that Tesla will be the most valuable company on Earth!”

Tesla shares have slumped about 68% for the year, though they surged 3.3% on Wednesday to $112.71. The stock is 42% lower in December, and it's prone to close out its worst month quarter, and year on record.

Musk has blamed Tesla’s plunging share price in part on rising interest rates. But critics point to his Twitter takeover as a bigger reason for the slump, which has wiped out about $675 billion in the market value of the electric vehicles manufacturer this year as of Wednesday’s close.

In the email, Musk thanked Tesla employees for their work in 2022, encouraged them to push hard for a strong fourth-quarter finish, and asked them to “volunteer to help deliver” cars to customers before midnight on Dec. 31, if at all possible.

Musk’s attention has been focused on Twitter of late. The Tesla and SpaceX CEO sold tens of billions of dollars worth of shares in his electric vehicle company in 2022 to finance the $44 billion buyout of the social media company.

Here’s the text of the email Musk sent to Tesla employees on Wednesday:

From: Elon Musk

To: Everybody

Subj. Final Few Days

Date: Dec. 28, 2022 [Time Stamp removed]

Just a quick note to thank you for your hard work and congratulate you on exceptional execution in 2022!

Since we have a lot of cars arriving at the last minute, it is important to rally hard and do everything we can to get our cars to customers who have ordered them before midnight on Dec. 31. Also, every incremental car we produce that can be delivered in time also matters.

Please go all out for the next few days and volunteer to help deliver if at all possible. It will make a real difference!

Thanks,

Elon

Btw, don’t be too bothered by stock market craziness. As we demonstrate continued excellent performance, the market will recognize that. Long-term, I believe very much that Tesla will be the most valuable company on Earth!