Do, muscular portfolios by Brian Livingston work?

"The Papa Bear Portfolio
The Papa Bear is based on the book Muscular Portfolios (BenBella Books, 2018). The strategy is a clone of a 2013 whitepaper by Mebane Faber. It is an extension of his book The Ivy Portfolio, which has been tracked with real money since 2006.

The Papa Bear is designed to (1) keep losses small during bear markets, (2) underperform the S&P 500 with less volatility during bull markets, and (3) wind up with superior performance over each complete bear-bull market cycle.

The investing menu consists of low-cost exchange-traded funds (ETFs) that track 13 asset classes. Your portfolio allocates roughly equal dollar amounts to the three ETFs with the strongest momentum, as determined by the strategy rules.

The table below updates every 10 minutes during market hours. But don’t trade every day! Check and tune up your portfolio only once a month, on the same day of your choosing. According to several independent studies, the largest gain is achieved by reallocating on or around the last trading day of the month, as described in Newsletter #52."

See Link to see the asset classes.

muscularportfolios.com - Papa bear