12月18日上期所沪银期货仓单较上一日上涨240千克

Group 1 - The total silver futures in Shanghai Futures Exchange reached 912,164 kilograms, with an increase of 240 kilograms compared to the previous day [1] - The main silver futures maintained a fluctuating pattern, opening at 15,447 yuan per kilogram, peaking at 15,666 yuan, and closing at 15,521 yuan, reflecting a rise of 3.44% [1] Group 2 - In the Shanghai warehouses, the total silver futures showed a net decrease of 3,483 kilograms, with specific warehouses like Zhonggongmei Supply Chain reporting a drop of 8,819 kilograms [2] - The Guangdong warehouse, Shenzhen Weibao, reported an increase of 3,723 kilograms, contributing to the overall total [2]