It’s only when markets are choppy that investors find out what their real risk tolerance is. It’s easy to fill out a questionnaire and say you’d be able to withstand a correction or bear market, but it’s another thing entirely to actually see 10%, 20%, or more of your portfolio wiped out — often more quickly than you’d expect.

If you’re finding that you’re less tolerant of risk than you expected in the downturn over the past month, then the concept of an “all-weather portfolio” might appeal to you. One well-known investor has come up with a popular strategy for building such a portfolio, and exchange-traded fund investors now have access to it through the State Street Bridgewater All Weather ETF (ALLW +1.08%). There have been two…