---
title: "April 29th Midday Review: Shanghai Composite Index fluctuates slightly and declines, PEEK materials concept surges across the board"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/237965452.md"
description: "On April 29th, the Shanghai Composite Index closed down 0.03%, the Shenzhen Component Index rose 0.09%, and the ChiNext Index increased by 0.05%. The market experienced fluctuations in the morning, with the three major indices showing mixed results. PEEK material concept stocks such as SELON and SINO—HIGH hit the daily limit, robotics concept stocks were active, and the chemical sector performed strongly, with nearly 10 stocks hitting the daily limit. Power stocks adjusted, with Leshan Electric Power and Xichang Electric Power hitting the daily limit down. Overall, more stocks rose than fell, with a morning trading volume of 657.7 billion"
datetime: "2025-04-29T03:31:03.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/237965452.md)
  - [en](https://longbridge.com/en/news/237965452.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/237965452.md)
---

# April 29th Midday Review: Shanghai Composite Index fluctuates slightly and declines, PEEK materials concept surges across the board

The market fluctuated sideways in the morning, with the three major indices showing mixed results. The differentiation between the yellow and white lines was significant, and the micro-cap stock index rose over 2%. The PEEK materials concept continued to explode, with stocks like SELON, SINO—HIGH, and Zhongxin Fluorine Materials hitting the daily limit. Robotics concept stocks became active again, with stocks like Fangzheng Electric, Yinbao Shanjin, and Tianqi Co., Ltd. reaching the limit. The chemical sector continued to rise, with nearly 10 stocks including Xianda Co., Ltd., Dayang Biological, and Lanfeng Biochemical hitting the daily limit. On the downside, power stocks faced adjustments, with Leshan Electric and Xichang Electric hitting the limit down. More stocks rose than fell, with over 3,700 stocks in the Shanghai, Shenzhen, and Beijing markets in the green, and a total turnover of 657.7 billion in the morning session. At the midday close, the Shanghai Composite Index fell 0.03%, the Shenzhen Component Index rose 0.09%, and the ChiNext Index rose 0.05%

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