A-shares midday review: The three major indices opened lower and then rose collectively into the red, with CPO, optical fiber, and other computing hardware stocks gaining strength.

Mars Finance News: On April 22, A-shares opened lower in early trading, then saw volatility and a rebound upward. All three major indices turned positive. By the midday close, the Shanghai Composite was up 0.24% to 4,095.07 points, while the Shenzhen Component Index and the ChiNext Index both rose 0.63%; the Beijing Securities 50 Index rose 1.24%. The total half-day trading value across the Shanghai, Shenzhen, and Beijing markets was 15,909 billion yuan, up 7.1 billion yuan from the previous day; more than 2,500 stocks across the whole market advanced. In terms of sectors, sectors such as fiber optics, CPO, graphite electrodes, and minor metals led the gains, while sectors including film and television cinemas and pharmaceutical commerce led the declines. On the market, the CPO concept strengthened again; Dongshan Precision and Changguang Huaxin both hit the daily limit to set new historical highs. The fiber optics concept remained active; Yongding Co., Ltd. hit the daily limit and continued to set new historical highs, and Hangdian Co., Ltd. also closed at the daily limit. The indium metal concept surged quickly; Zhuyi Group hit five consecutive daily limit-ups, Yunnan Germanium Industry hit three daily limit-ups in four days and continued to set new historical highs, and Zinc Industry Co., Ltd. also closed at the daily limit. On the downside, the film and television cinema concept saw a broad pullback; Light Media, Bona Film, and Happy Blue Ocean all fell. (Ke Gu Bao Broadcast)