A total of 236 people became billionaires over the past year, here are the newcomers to the 2022 ForbesBillionaires list
-born cofounders of grammar checking tool Grammarly, which was valued at $13 billion by investors in November. NFT marketplace OpenSea’s cofounders, 31-year-old, became billionaires when the business was valued at $13.3 billion in a January funding round. A month later, 34-year-old, closed a funding round for their startup, Alchemy, whose software powers thousands of blockchain-based computing firms, that valued the firm at $10.2 billion.
, who chairs Milan-based Amplifon, the world's largest retailer of hearing aids, founded by her late father Algernon Charles Holland in 1955. Another Italian, 86-year-old, also debuted on this year’s list, three decades after founding Technoprobe in his garage and attic. The Cernusco Lombardone-based manufacturer of microchip testing devices went public on Euronext Milan in February.