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 ...
Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
December 19, 2025 • Nick Harkaway grew up hearing his dad read drafts of his George Smiley novels. He picked up le Carré's beloved spymaster character in the novel Karla's Choice. Originally broadcast ...
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