长城证券：控股股东华能资本增持计划实施完成

Group 1 - The core point of the article is that the controlling shareholder of Changcheng Securities, Huaneng Capital, plans to increase its stake in the company through a centralized bidding transaction, with an investment amount between 50 million and 100 million yuan [3] - Huaneng Capital has completed its share buyback plan, acquiring a total of 6.3709 million shares, which represents 0.16% of the company's total share capital, with a total investment of 50.1707 million yuan (excluding transaction fees) [3] - Following the completion of the buyback, Huaneng Capital's ownership in Changcheng Securities increased from 46.38% to 46.53% of the total share capital [3]