Mike Ashley, the billionaire bruiser who founded Sports Direct, is gradually taking his brand upmarket. His track record suggests we shouldn’t dismiss his chances of reviving House of Fraser. Jane Lewis reports.

Patrick Soon-Shiong made a $9bn fortune in biotechnology. Now he wants to spend it curing a very different kind of disease – the spread of bad journalism. Jane Lewis reports.

The death of Sergio Marchionne, the “saviour” of Fiat and Chrysler, leaves a massive gap in the leadership of the global car industry, reports Jane Lewis.

A self-made businesswoman, or just famous for being famous? Either way, Kylie Jenner is on track to become the youngest billionaire on record. Jane Lewis reports.

James Benamor escaped a troubled childhood and survived the 2008 financial crisis. Now he has carved out a profitable niche in a controversial industry. Jane Lewis reports.

Over 50 years and more than 1,500 deals, Stefano Pessina turned a struggling family firm into an international healthcare giant. What’s his next target? Jane Lewis reports.

Atul Gawande doesn’t have the sort of CV you’d expect for someone running a healthcare joint venture between Amazon, Berkshire Hathaway and JPMorgan. That’s exactly why he was chosen. Jane Lewis reports.

Carlos Ghosn, aka “Le Cost Killer”, managed to resuscitate Renault and Nissan in the 1990s and 2000s. But can he stay ahead of the game in the era of electric and self-driving cars? Jane Lewis reports.

Over 35 years, Martin Gilbert has built a small Scottish investment trust into a £660bn powerhouse. Yet the jury is still out on how successful his constant deal-making has been. Jane Lewis reports.

Sergei Galitsky built Russia’s largest private company before selling it to a state-owned bank earlier this year. Was he pushed out by the Kremlin, or did football fever drive him to it?