Noted investment manager Mark Mobius predicted the start of the long bull market in 2009, but now he’s cautioning investors to brace for a steep selloff. In an interview with the London-based Financial News, as reprinted by MarketWatch, Mobius said: “I can see a 30% drop. When consumer confidence is at an all time high, as it is in the U.S., that is not a good sign. The market looks to me to be waiting for a trigger that will cause it to tumble. You can’t predict what that event might be—perhaps a natural disaster or war with North Korea.” Mobius also warns that the growing popularity of ETFs and algorithmic trading pose huge risks to the market.