Amsterdam, Netherlands - February 24, 2017: Black Tesla model S

Elon Musk has made headlines yet again with another controversial comment, sending Tesla (NASDAQ: TSLA) shares down 4.4 percent.

Just days after reaching an agreement with over fraud charges, Musk mocked the US Securities and Exchange Commission on Twitter.

He wrote: “Just want to that the Shortseller Enrichment Commission is doing incredible work. And the name change is so on point!”

Last week, Musk was ordered to pay a $20 million fine and step down as the group’s chairman after tweeting plans to take Tesla private.

Musk misled investors in on 7 August by writing on Twitter that there was “funding secured” to take the electric car company private at $420 a share.

The tweet caused shares to rise, before later falling again when it became clear that funding was not secured.

The SEC said claims on Twitter were “false and misleading”.

Following the tweets, short-sellers claimed to have lost millions. Musk famously has a dislike for short-sellers and once called them “jerks who want us to die”.

Musk has been fined $20 million and will step down as chairman for three years whilst carrying on as the chief executive. Tesla was also given a fine of $20 million.

Elon Musk has not shied away from the headlines over the year. His biggest controversies include calling the British cave diver who was involved in helping rescue the Thai boys a “pedo” as well as smoking marijuana on a live podcast.