Mr. Musk's post came nearly a week after he reached a deal with the SEC to settle a lawsuit over Tweets he posted on 7 August when he said he had secured funding to take the his niche EV company private at 420/share, causing the company's stock to soar.
Musk reached a settlement with the SEC in September, in which he agreed to step down as the chairman of Tesla's board and pay a $20 million fine, in addition to other penalties and mandated changes levied at the company. However, in what could be seen as a win for shareholders, the agreements essentially require Musk and the company to pay the fines out of their own funds.
According to an account by the Detroit Free Press, West had a busy day in the Motor City, which he documented on social media.
"Just want to (say) that the Shortseller Enrichment Commission is doing incredible work".
Musk has been in hot water with the SEC since August 7, when he claimed on Twitter that he had secured funding to take Tesla private at $420 a share.
Tesla chief executive Elon Musk stands on the podium as he attends a forum on startups in Hong Kong, China January 26, 2016.
Representatives for the Palo Alto, California-based company didn't respond to requests for comment.
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The tweet appeared to jar investors, who drove Tesla shares down 2.4 percent in after-hours trading to $275.
The tweet came less than four hours after U.S. District Judge Alison Nathan in Manhattan ordered Musk and the SEC to explain by October 11 in a joint letter why their settlement was fair and reasonable and would not hurt the public interest. Musk is Tesla's largest shareholder, holding some 22% of the company's outstanding shares at the end of previous year.
"Keep it coming, Elon", one person said. Ryan White, an SEC spokesman, declined to comment.
That Musk stirred further controversy on Twitter could irk regulators, since his tweets are what prompted the SEC's accusations.
The 2nd Circuit has jurisdiction over Nathan's court, and lawyers said Musk's settlement would likely win approval, though orders such as Nathan's are not too common.
Thomas Gorman, a partner at Dorsey & Whitney in Washington, D.C., said Musk might argue that the latest tweet might be a mere "personal lament", and not a violation of the settlement. "It also bolsters the SEC argument that the motive for the false and misleading tweets about taking the company private was to thwart the short sellers".
"I have lost 30 years of my life savings all in $tsla thanks to your tweets please stop", TrendTrader007 wrote.