Sri Lanka, June 13 -- Elon Musk on Friday became the world's first trillionaire after shares in his SpaceX rocket company soared during the biggest-ever stock market debut.

The Tesla and SpaceX founder comfortably cemented his status as the world's richest man, with his total net worth standing at $1.11tn (£828bn) according to the Bloomberg rich list.

It came as the rocket, telecommunications and artificial intelligence (AI) company listed on the Nasdaq stock exchange with a value of $2.2tn.

The company said its shares would be offered at $135 each, but trading opened at $150 and briefly reached $176.50 in a show of investor enthusiasm for potential business related to space and companies associated with Musk.

SpaceX shares clos...