开评：三大指数集体低开 券商等板块跌幅居前

Core Viewpoint - The A-share market opened lower with all three major indices declining, indicating a bearish sentiment among investors [1] Market Performance - The Shanghai Composite Index fell by 0.19% - The Shenzhen Component Index decreased by 0.26% - The ChiNext Index dropped by 0.21% [1] Sector Performance - Sectors that performed well included: - Aquaculture - Computing power leasing - Deep-sea technology - Heavy machinery - Sectors that underperformed included: - Brokerage firms - Satellite internet - GPU - Cultivated diamonds - Precious metals - Semiconductors [1]