17日集运指数欧线期货下跌4.28%，最新持仓变化

Core Insights - The main contract for the European shipping index futures closed at 2510, with a decrease of 4.28% and a trading volume of 64,600 contracts as of July 17 [1][3] - The total trading volume for all contracts was 80,500, down by 41,900 contracts from the previous day [1][4] - The top 20 positions showed a net short position with a difference of 5,530 contracts [1] Position Data Summary - The top three long positions were held by Guotai Junan (3,957 contracts), CITIC Futures (3,135 contracts), and Dongzheng Futures (3,014 contracts) [1][4] - The top three short positions were also held by Guotai Junan (5,998 contracts), CITIC Futures (3,707 contracts), and Dongzheng Futures (2,923 contracts) [1][4] - The top three long position increases were from CITIC Futures (2,718 contracts, up by 147), Everbright Futures (917 contracts, up by 131), and Zheshang Futures (710 contracts, up by 127) [1][3] - The top three long position decreases were from Guotai Junan (2,764 contracts, down by 514), GF Futures (1,563 contracts, down by 132), and Baocheng Futures (1,259 contracts, down by 65) [1][3] - The top three short position increases were from Fangzheng Zhongqi (1,890 contracts, up by 524), CITIC Futures (2,853 contracts, up by 245), and Dongzheng Futures (2,342 contracts, up by 182) [1][3] - The top three short position decreases were from GF Futures (1,333 contracts, down by 285), Dongwu Futures (1,790 contracts, down by 214), and Donghai Futures (988 contracts, down by 172) [1][3]