Tesla boss Elon Musk revealed a 9.2% stake in microblogging site Twitter on Monday, probably making him the biggest shareholder in the social media company and triggering a 26% rise in its shares.
Musk's move comes close on the heels of his tweet that he was giving “serious thought” to building a new social media platform, while questioning Twitter's commitment to free speech.
A filing showed that Musk owns 73.5-million Twitter shares, valuing his passive stake in the company at up to $2.9bn (roughly R42.43bn) based on the stock's Friday close. The shares are held by the Elon Musk Revocable Trust, of which he is the sole trustee.
A prolific Twitter user, Musk has more than 80-million followers since joining the site in 2009 and has used the platform to make several announcements, including teasing a go-private deal for Tesla that put him under regulatory scrutiny.
However, he has been critical of the platform and its policies, saying the company is undermining democracy by failing to adhere to free-speech principles.
“We would expect this passive stake as the start of broader conversations with the Twitter board/management that could ultimately lead to an active stake and a potentially more aggressive ownership role of Twitter,” Wedbush analyst Dan Ives wrote in a note.