One of Wall Street’s most bearish skeptics told Business Insider last month that he thinks the “worst market crash since 1929” is coming.

Mark Spitznagel, chief investment officer of Universa Investments, is known for being a “permabear” when it comes to the stock market outlook.

Spitznagel told Bloomberg in an earlier interview that we’re witnessing the “greatest credit bubble in human history.” Spitznagel’s main advice to everyday investors is not to chase the market, but rather to build a portfolio that can withstand the impact if the market crashes. If you share Spitznagel’s incredibly bearish view on the state of the U.S. economy, here’s how you can prepare your portfolio.

In an interview with New York Magazine’s Intelligencer last year,Spitznagel likened the Fed’s “constant monetary intervention” to forest fire suppression.

He went on to say “when you suppress it enough, it gets to a point where you can no longer afford to have any fires burn because they would be too big and too intense.”

That’s where the U.S. economy is at, according to the hedge fund manager.

If Spitznagel’s dire market predictions come true, you really don’t want to have all of your eggs in one basket — because that basket could easily go up in flames.

Diversifying your portfolio with a mix of assets — including stocks, bonds, real estate, and other alternative assets — will help you spread your risk and secure your money.

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