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Drew Housman

The Firewall Principle, and Why Diversification Isn’t Just for Investing

My personal portfolio is predicated on the idea of building “firewalls” between my assets. I’m referring to the original meaning of the word firewall — an actual wall constructed, often between buildings, to prevent the spread of fire. I invest in multiple uncorrelated assets so that if a “fire” breaks out (e.g., the stock market […]