Mumbai, Sept. 4 -- COMEX Copper futures slumped today, giving up latest gains as weakness in Asian stocks weighed on the metal. The commodity currently trades at $4.55 per pound, down 1.60% on the day and pulling back from a five-week top. Meanwhile, equities stayed cautious ahead of the US nonfarm payrolls data. China's Shanghai Composite index fell 1.25%, falling further after recent gains. Hong Kong's Hang Seng dropped 1.25%. Japanese Nikkei average spiked 1.25%. European stocks saw modest gains. The tech-heavy Nasdaq jumped around 1% and the S&P 500 climbed 0.5%. The Dow eased 0.1% though, keeping US equities somewhat mixed yesterday. On MCX, Copper futures broke under Rs 900 per kg and currently trade at Rs 899.55 per kg, down 0.73% on...