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The Trump administration announced that the company, a pharmacy benefit manager, had agreed to make significant changes to its practices. By Rebecca Robbins and Reed Abelson The reporters have ...

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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 ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Somer G. Anderson is CPA, doctor of ...