证券时报·2026-03-18 04:21Market Overview - The A-share market showed mixed performance on March 18, with the communication and electronics sectors experiencing significant gains, becoming the highlights of the morning session [1][4]. - By the close of the morning session, the Shanghai Composite Index fell by 0.40%, while the Shenzhen Component Index rose by 0.05%, the ChiNext Index increased by 0.89%, and the Sci-Tech Innovation Index gained 0.6% [4]. Sector Performance - The communication sector led the gains with an increase of nearly 3%, featuring stocks like Century Hengtong (301428) hitting the daily limit with a 20% rise, and Pingzhi Information (300571) soaring nearly 15% [4][5]. - The electronics sector also saw a rise of over 1.4%, with multiple stocks reaching their daily limit, including Aohong Electronics and Aosikang [6][7]. - Other sectors such as computers and defense industries also showed strong performance, while oil, steel, and real estate sectors faced declines [8]. ETF Market - The ETF market remained stable overall, but the ChiNext Composite ETF (159287) experienced a sharp decline of over 18% upon resuming trading [2][10]. - This ETF had previously shown strong performance, closing with a 20% increase the day before its drop [12]. Company Highlights - Notable stocks in the communication sector included: - Century Hengtong (301428) at 39.79, up 19.99% - Pingzhi Information (300571) at 33.77, up 14.98% - Ruisi Kanda (603803) at 13.13, up 9.97% [5]. - In the electronics sector, key performers included: - Lian Dong Technology (301369) at 150.78, up 13.20% - Anlu Technology (688107) at 33.00, up 12.63% - Aibisen (300389) at 19.65, up 11.33% [7].