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From metaphysics to mortgages
Former philosophy professor Donald Brownstein crafts investment strategies as eclectic as his thinking at hedge fund firm SPM
December 17, 2025
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By Irwin Speizer       Donald Brownstein: Logic is kind of dry, but it has important ramifications Photographs by Chris ClintonDonald Brownstein struggles to remember what life was like back when he was a shaggy-haired

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