仕佳光子龙虎榜数据（10月17日）

Core Points - The stock price of Shijia Photon (688313) closed at 54.44 yuan on October 17, experiencing a decline of 18.58% with a trading volume of 28.39 billion yuan [2] - The stock was the only one listed on the daily trading limit due to a price drop exceeding 15% [2] - The net outflow of main funds for the stock reached 2.92 billion yuan on the same day [3] Trading Activity - The top five trading departments accounted for a total transaction of 870 million yuan, with a buying amount of 347 million yuan and a selling amount of 523 million yuan, resulting in a net sell of 176 million yuan [2] - The largest buying department was the Shanghai-Hong Kong Stock Connect, with a buying amount of 1566.49 million yuan, while the largest selling department was also the Shanghai-Hong Kong Stock Connect, with a selling amount of 1955.47 million yuan [3] - Institutional proprietary seats were involved in both buying and selling, with net selling by institutional seats amounting to 586.15 million yuan and net selling by the Shanghai-Hong Kong Stock Connect at 388.98 million yuan [2][3]