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 ...

Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.

April 20, 2026 • Traders have made millions betting on the Iran War. They are also suspiciously timed. No public information, then boom: a Truth Social post from President Trump. Cue fat windfalls for ...