氧化铝：主力跌超 3% 有色金属行情多变

Core Viewpoint - The performance of the non-ferrous metals sector in the domestic futures market on April 30 showed mixed results, with significant fluctuations in various metal prices and changes in warehouse receipts [1] Price Movements - The main contract for alumina fell over 3%, down 3.10% to 2721.00 CNY/ton - The main contract for industrial silicon decreased by 1.10%, priced at 8550.00 CNY/ton - The main contract for aluminum rose by 0.23%, reaching 19965.00 CNY/ton - The main contract for nickel declined by 0.59%, priced at 123750.00 CNY/ton [1] Warehouse Receipts Data - As of April 29, copper futures warehouse receipts totaled 34042 tons, a decrease of 2842 tons - Aluminum futures warehouse receipts were at 70211 tons, down 2379 tons - Zinc futures warehouse receipts stood at 2429 tons, a reduction of 427 tons - Tin futures warehouse receipts were 8606 tons, down 116 tons - Lead futures warehouse receipts increased by 427 tons to 38398 tons - Nickel futures warehouse receipts decreased by 264 tons to 24368 tons - International copper futures warehouse receipts were at 9863 tons, down 100 tons - Alumina futures warehouse receipts increased by 6008 tons to 285530 tons - Lithium carbonate futures warehouse receipts were at 33477 lots, up 630 lots - Industrial silicon futures warehouse receipts totaled 69367 lots, down 50 lots [1] Basis Data - As of April 29, various commodities showed a "backwardation" phenomenon in basis data, including copper, zinc, aluminum, nickel, tin, industrial silicon, lithium carbonate, polysilicon, and international copper contracts - Copper basis was 511 with a basis rate of 0.65% - Zinc basis was 435 with a basis rate of 1.89% - Aluminum basis was 46 with a basis rate of 0.23% - Lead basis was -52 with a basis rate of -0.31% - Nickel basis was 1137 with a basis rate of 0.91% - Tin basis was 965 with a basis rate of 0.37% - Industrial silicon basis was 1315 with a basis rate of 13.20% - Lithium carbonate basis was 2486 with a basis rate of 3.60% - Polysilicon basis was 2680 with a basis rate of 6.70% - International copper basis was 143 with a basis rate of 0.21% [1]