Stafford marks his third consecutive year on the international Midas List, with six prior appearances on the Midas List Europe.The Irish-born investor led the Series D round into Nubank in 2016, which went on to IPO in 2021 and has a market cap of $55.7 billion as of May 2024.He led the firm's 2016 investment into fintech Klarna, last valued at $6.7 billion, and co-led the Series A into payments provider Checkout.com, last valued at $11 billion.He is a cofounder of DST Global, an early investor in Facebook and Twitter, and joins this year's list alongside DST cofounders Saurabh Gupta, Rahul Mehta and John Linfors.