Jin Rong Jie·2026-02-24 10:23Market Overview - On February 24, the market experienced a pullback after an initial rise, with the ChiNext Index briefly increasing over 2% [1] - The total trading volume in the Shanghai and Shenzhen markets reached 2.2 trillion yuan, an increase of 219.4 billion yuan compared to the previous trading day [1] - The Shanghai Composite Index rose by 0.87%, the Shenzhen Component Index increased by 1.36%, and the ChiNext Index gained 0.99% by the market close [1] Sector Performance - Oil and gas stocks saw a collective rise, with several stocks including Tongyuan Petroleum and Zhonghai Oilfield Services hitting the daily limit [1] - The chemical sector experienced a surge, highlighted by Meibang Co. achieving four consecutive limit-ups, along with other stocks like Hongbaoli and Jinpai Titanium Industry also reaching their limits [1] - The cultivated diamond concept stocks surged, with Sifangda hitting the limit and Huanghe Xuanfeng also reaching its limit [1] - The glass fiber sector remained active, with International Composite Materials achieving a historical high after four consecutive limit-ups [1] - In contrast, the film and television sector and AI application stocks faced significant declines, with multiple stocks like Light Media and China Film hitting the daily limit down [1] Limit-Up and Limit-Down Stocks - A total of 92 stocks hit the daily limit, with 7 stocks achieving consecutive limit-ups, and 41 stocks failed to maintain their limit-up status, resulting in a limit-up rate of 69% [1] - Notable stocks included Han Jian He Shan with five consecutive limit-ups and YN Energy with four consecutive limit-ups [1] Sector Highlights 1. Oil and Gas: The ongoing military buildup in the Middle East and escalating US-Iran tensions have led to a recent increase in oil prices [12] 2. Chemicals: The US has classified key herbicides like elemental phosphorus and glyphosate as strategic materials, pushing international phosphate fertilizer prices above $700 per ton [12] 3. Optical Fiber and Communication: A surge in AIDC demand has driven both volume and price increases in optical fibers, with G.652.D single-mode fiber prices reaching a near seven-year high, averaging over 35 yuan per core kilometer [12] 4. Glass Fiber: Rising costs and supply tightness are prompting glass fiber manufacturers to initiate a second round of price increases, with planned monthly adjustments of 10% to 15% [12]