Elizabeth Anne Holmes (/hoʊmz/; born February 3, 1984) is the founder, Chairman, and CEO of Theranos, a privately held company known for its false claims to have devised revolutionary blood tests that used very small amounts of blood. In 2015, Forbes named Holmes as the youngest self-made female billionaire in the world due to a $9 billion valuation of Theranos. The next year Forbes revised her net value to zero dollars, given an updated $800 million valuation of Theranos and the fact that many of Theranos' investors hold preferred shares and so would be paid before Holmes (who holds common stock) in a liquidation event.
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