赛微电子：董事长杨云春累计质押股份7928万股

Group 1 - The core point of the news is that Saiwei Electronics announced the shareholding and pledge status of its controlling shareholder, Yang Yunchun, indicating significant ownership and pledge levels [1] - Yang Yunchun holds approximately 179 million shares, accounting for 24.46% of the total share capital of the company [1] - A total of 79.28 million shares have been pledged, which represents 44.27% of Yang Yunchun's total holdings and 10.83% of the company's total share capital [1] Group 2 - As of the report, the market capitalization of Saiwei Electronics is 16.5 billion yuan [2]