Markets for everything from home-building materials to bitcoin to stocks are soaring, stirring up fresh fears that global markets are in a bubble. Rarely have so many assets been up this much at once. The price of lumber has shot up to all-time highs. Residential home sales in the U.S. are at levels last seen in 2006, before the housing bubble collapsed. And stocks are on a tear. …The frenzy has extended far beyond conventional markets tracked by Wall Street firms. …Today’s market environment stands in contrast to the boom in asset prices of the 1920s, 1980s, 1990s and mid-2000s, which investors and analysts say was driven by robust economic growth. In most of those periods, the Fed played the role of bubble-popper by raising interest rates. …This time around, the Fed has dismissed notions that low interest rates are fueling a bubble in asset prices. [We respect the copyrights of the source publication – full access may require a subscription]