8日工业硅上涨2.82%，最新持仓变化

Core Insights - The main contract for industrial silicon (2509) closed at a price increase of 2.82% as of July 8, with a trading volume of 1.7073 million lots and a net short position of 64,061 lots among the top 20 positions [1][3]. Trading Volume and Positions - Total trading volume for all industrial silicon contracts reached 1.9544 million lots, with an increase of 1.225 million lots compared to the previous day [1][3]. - Among the top 20 positions, long positions totaled 408,000 lots, an increase of 14,300 lots from the previous day, while short positions totaled 492,900 lots, an increase of 15,100 lots [1][3]. Major Players - The top three long positions were held by Guotai Junan Futures (total position 52,578), CITIC Futures (39,533), and CITIC Jiantou (33,493) [1][3]. - The top three short positions were held by Guotai Junan Futures (64,104), CITIC Futures (40,344), and Galaxy Futures (37,546) [1][3]. Changes in Long Positions - The top three increases in long positions were from Guotai Junan Futures (36,440, increase of 10,813), CITIC Futures (22,201, increase of 2,716), and Zhonghui Futures (5,629, increase of 816) [1][3]. - The top three decreases in long positions were from Shenyin Wanguo (5,572, decrease of 1,301), Dongzheng Futures (10,904, decrease of 1,123), and Founder Futures (15,813, decrease of 831) [1][3]. Changes in Short Positions - The top three increases in short positions were from Chuangyuan Futures (15,992, increase of 5,847), Yong'an Futures (25,875, increase of 4,614), and Guangfa Futures (13,956, increase of 4,446) [1][3]. - The top three decreases in short positions were from Guotai Junan Futures (41,406, decrease of 9,846), Guotou Futures (16,510, decrease of 2,489), and Zhongtai Futures (5,464, decrease of 2,419) [1][3].