光云科技龙虎榜：营业部净买入4293.65万元

Group 1 - The closing price of Guangyun Technology (688365) on December 19 was 11.58 yuan, reaching the daily limit up with a trading volume of 3.92 billion yuan and a turnover rate of 8.76% [1] - The stock was listed on the trading board due to a price increase of 15% at the close of the day [2] - The top five trading departments had a total transaction amount of 1.15 billion yuan, with a net purchase of 429.365 million yuan after buying 789.002 million yuan and selling 359.638 million yuan [2]