AlHijjah 15, 1436, September 29, 2015, SPA -- Global stocks slid to their lowest in more than two years on Tuesday as raw materials prices and emerging markets stayed under pressure, Reuters reported. Commodity prices edged up but held near multi-year lows on concern over an economic slowdown in major consumer China. Mining and trading giant Glencore, whose shares fell by almost a third on Monday on investor concern over its debt levels, eked out gains of 4 percent in London but only after its Hong Kong-listed shares fell 29 percent. Asian commodity merchant Noble lost 11 percent, having at one point in the session fallen by 15 percent to levels last seen in October 2008. European shares partially recouped early losses but most major indexes remained near 2015 lows. Wall Street was set to open higher, according to index futures. Earlier, Asian shares slid to 3 1/2-year lows on concerns a slowdown in China will dent its previously massive demand for commodities. Gold fell 0.4 percent to $1,126.60 an ounce on worries U.S. interest rates could rise later this year. The pan-European FTSEurofirst 300 index was down 0.3 percent, having dropped 1.7 percent earlier. Losses were led by biotech firms, which helped push the U.S. Nasdaq index down 3 percent on Monday.