We live in an age of serial asset bubbles and spectacular busts. Economists, policymakers, central bankers and most people in the financial world have been blindsided by these busts, while investors have lost trillions. Economists argue that bubbles can only be spotted after they burst and that market moves are unpredictable. Yet Marathon Asset Management, a London-based investment firm managing over $50 billion of assets has developed a relatively simple method for identifying and potentially avoiding them: follow the money, or rather the trail of investment. Bubbles whether they affect a...