Wall Street Journal | Asian Shares Tumble on Oil, Junk-Bond Worries Wall Street Journal Asian markets fell early Monday amid sharpening worries about the stability of the junk-bond market and tumbling oil prices. Japan's Nikkei Stock Average was down 3.2%, Australia's S&P/ASX 200 fell 1.4% and South Korea's Kospi was down 1.3%. Materials ... |