The tweet, sent late Friday evening less than an hour before Musk tweeted that he would take a break from Twitter "for a few days," was in response to a question from a Twitter follower.
The Securities and Exchange Commission in September charged Musk, 47, with misleading investors with tweets on August 7 that said he was considering taking Tesla private at $420 a share and had secured funding. The tweets had no basis in fact, and the ensuing market chaos hurt investors, regulators claimed.
Tesla and Elon Musk have agreed to pay $20 million each to financial regulators and the billionaire will step down as the company's chairman but remain as chief executive, under a settlement.
Under the settlement agreement, Tesla needs to appoint an independent chairman by Nov. 13.