深水规院低开近5%，消息面上，股东水规院投资拟减持3%股份。

Group 1 - The core point of the article indicates that the company, 深水规院, opened nearly 5% lower in the market due to news regarding a shareholder's intention to reduce their stake by 3% [1] Group 2 - The reduction in shareholding by the investor may signal potential changes in investor confidence or market perception regarding the company's future performance [1] - The stock price reaction reflects immediate market sentiment in response to the news of the planned share reduction [1]