It has expanded to other markets including Greater China, Singapore, Japan, South Korea, Russia, South Africa and most countries and regions in Southeast Asia and Europe.[15][16] According to Forbes, Lei Jun, the founder and CEO, has an estimated net worth of US$12.5 billion.[17] Xiaomi is the world's 4th most valuable technology start-up after receiving US$1.1 billion funding from investors, making Xiaomi's valuation more than US$46 billion.[18] Ranked 468th, Xiaomi is the youngest company on Fortune Global 500 list for 2019.[19] In 2019, Xiaomi's mobile phone shipments reached 125 million units,[20] ranking fourth globally since 2018.