Even so, Mr Ellison remains the world’s fifth-richest man, and Oracle the third-biggest software firm. He has a thing or two to teach fellow tech titans, in particular his friend Elon Musk, about ...

Boosted by strong demand and company forays into health care and digital transformation of government, Amazon stock moves into buy range.

Other potential buyers include the philanthropist Frank Mccourt ’s Project Liberty, which is raising capital to make a bid for TikTok in order to “rearchitect the platform” and protect user data.