Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

An investigative reporter best known for exposing fraud at Silicon Valley blood-testing startup Theranos sued Elon Musk's xAI, Anthropic, Google , OpenAI, Meta Platforms and Perplexity on Monday for ...