商用车板块8月14日跌1.55%，曙光股份领跌，主力资金净流出1.8亿元

Group 1 - The commercial vehicle sector experienced a decline of 1.55% on August 14, with Shuguang Co. leading the drop [1] - The Shanghai Composite Index closed at 3666.44, down 0.46%, while the Shenzhen Component Index closed at 11451.43, down 0.87% [1] - Key stocks in the commercial vehicle sector showed varying declines, with Shuguang Co. closing at 3.55, down 3.01%, and Foton Motor at 2.64, down 2.94% [1] Group 2 - The commercial vehicle sector saw a net outflow of 180 million yuan from main funds, while retail investors contributed a net inflow of 196 million yuan [2] - Speculative funds experienced a net outflow of approximately 16.34 million yuan [2]