Sliding oil prices triggered extreme volatility in commodities as disappointing news from some of the world’s biggest economies adds to pressure on the sector while causing nerves in equity markets. The recent sharp fall in the cost of resources is also exacerbating concerns about global disinflation, pushing many benchmark sovereign bond yields to record lows. More On this story Global Market Overview The price of Brent crude is down 0.7 per cent to $69.68, after earlier in the day dropping to $67.53, its cheapest in almost five years. The move adds to the 12.7 per cent slide seen last week, which came after Opec held its production ceiling at 30m barrels a day despite a supply glut. Commodity currencies are getting hit, though they, too, have pared losses. The Australian dollar is off 0.2 per cent to US$0.8490, near its weakest since July 2010, and the […]