Li Ka-Shing — or "Superman, as he's been nicknamed" — retired from running CK Hutchison Holdings and CK Asset Holdings in 2018.
His current net worth is $31.7 billion.
Ka-Shing has an incredible rags-to-riches tale. As Business Insider's Harrison Jacobs reported, after his family fled to Hong Kong from southern China during WWII, Ka-Shing's father died of tuberculosis. Ka-Shing had to leave school before age 16 to work in a plastics factory.