Jeremy Grantham has been called many things. Permabear. Doom merchant. Cassandra with a British accent. For decades, the cofounder of the Boston-based asset manager GMO has warned that financial markets were inflated to dangerous, unsustainable heights—and he has made enemies for it. But ask him how he feels about all of it, and he sounds almost cheerful.
“Data is data,” he told Fortune in a recent interview. “I quite like thinking these things through.”
