Group 1 - The recent reduction plans by major shareholders of companies like Keli'er, United Precision, and Senba Sensor have raised concerns among investors, especially given the high market valuations and stock prices [1] - Historical cases show that announcements of share reductions by major shareholders at high stock prices often lead to significant declines in those companies' stock prices shortly after [1] - The actions of major shareholders are seen as a direct endorsement of the company's value, and their decisions can significantly impact investor confidence [2] Group 2 - There is a concern that some major shareholders act more like traders rather than guardians of the company, which can negatively affect the confidence of retail investors [2] - A healthy capital market relies on the confidence of all participants, and major shareholders are expected to demonstrate responsibility and commitment to the company's long-term growth [2] - The reputation and market value of a company, as well as the overall health of the capital market, are influenced by the actions and attitudes of its major shareholders [2]