Tesla (TSLA) Chief Executive Officer Elon Musk took to Twitter to break some news, saying the green car company will be profitable and cash flow positive during the second half of 2018.

Musk’s tweet came in response to an Economist article, citing Wall Street firm Jefferies, which said the company is facing a cash crunch and will need to raise between $2.5 billion and $3 billion. Musk said as the company will be cash flow positive in the third and fourth quarters of this year there is no reason to raise capital.

Earlier in April, the company said while reporting quarterly earnings that it won’t need to raise any equity or debt this year outside of standard credit lines. What’s more, Tesla claimed it is the fastest growing automotive company and that Model 3 production pace could soon surpass "even that of Ford and the Model T."  While it missed its target of 2,500 Model 3s per week, it did make 2,020 over the course of a seven day time frame, which was higher than what many analysts expected. Tesla also said it should hit the production rate of 5,000 a week by the end of the year.  (See more: Tesla Misses a Target, But Progress Eases Concerns.)

While lots of Wall Street analysts are skeptical, Musk offered a rebuttal with a tweet:

The Economist used to be boring, but smart with a wicked dry wit. Now it’s just boring (sigh). Tesla will be profitable & cash flow+ in Q3 & Q4, so obv no need to raise money.

— Elon Musk (@elonmusk) April 13, 2018

According to Electrek, which first spotted the Musk Tweet, Tesla ended the fourth quarter with more than $3.3 billion in cash but was burning through it at a fast clip. Revenue from Model 3 sales hasn’t been enough to cover production costs. (See more: Tesla 'On The Verge' of Bankruptcy: Vilas Capital.)

Musk's comments come as naysayers have been increasing their short positions in the stock. According to financial analytics firm S3 Partners, Tesla is once again the most shorted stock, surpassing Apple (AAPL). With production snafus preventing it from reaching its goals for the Model 3, its first mass-market vehicle, investors have been increasingly betting shares will fall.