Elizabeth Anne Holmes is an American biotechnology entrepreneur who was convicted of fraud in connection to her blood-testing company, Theranos. The company's valuation soared after it claimed to have revolutionized blood testing by developing methods that needed only very small volumes of blood, such as from a fingerprick. In 2015, Forbes had named Holmes the youngest and wealthiest self-made female billionaire in the United States on the basis of a $9-billion valuation of her company. In the following year, as revelations of fraud about Theranos's claims began to surface, Forbes revised its estimate of Holmes's net worth to zero, and Fortune named her in its feature article on "The World's 19 Most Disappointing Leaders".

Theranos Inc. was an American privately held corporation that was touted as a breakthrough health technology company. Founded in 2003 by then 19-year-old Elizabeth Holmes, Theranos raised more than US$700 million from venture capitalists and private investors, resulting in a $10 billion valuation at its peak in 2013 and 2014. The company claimed that it had devised blood tests that required very small amounts of blood and that could be performed rapidly and accurately, all using compact automated devices that the company had developed. These claims were proven to be false.