---
title: "The \"A Series\" broad-based index experienced fluctuations and adjustments during the week, with improvements in industrial enterprise profits releasing positive signals"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/280808990.md"
description: "This week (from March 23 to 27), the A-share \"A series\" broad-based indices experienced fluctuations and adjustments, with market sentiment being cautious. The CSI A100 Index fell by 1.2%, the CSI A500 Index fell by 1.0%, and the CSI A50 Index fell by 0.9%. Macroeconomic data shows that the total profit of industrial enterprises above designated size nationwide increased by 15.2% year-on-year in January and February, maintaining positive improvement for seven consecutive months, injecting positive signals into the market"
datetime: "2026-03-27T14:14:13.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/280808990.md)
  - [en](https://longbridge.com/en/news/280808990.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/280808990.md)
---

# The "A Series" broad-based index experienced fluctuations and adjustments during the week, with improvements in industrial enterprise profits releasing positive signals

This week (March 23 - 27), the A-share "A Series" broad-based indices experienced a turbulent adjustment, with market sentiment being cautious. By the close, the CSI A100 Index fell by 1.2%, the CSI A500 Index dropped by 1.0%, and the CSI A50 Index decreased by 0.9%, with the three major broad-based indices showing highly similar trends.

From the perspective of index characteristics and valuations (data source: Wind, as of March 26, 2026):

CSI A500 Index: Rolling price-to-earnings ratio of 16.7 times, with a valuation percentile of 70.9% since its release in 2004, covering 89 sub-industries, widely distributed across sectors, and possessing strong market representation;

CSI A100 Index: Rolling price-to-earnings ratio of 16.9 times, with a valuation percentile of 82.1% since its release in 2006, focusing on core large-cap leaders, covering 46 sub-industries;

CSI A50 Index: Rolling price-to-earnings ratio of 17.3 times, released in January 2024, covering 50 industries, with a prominent style of ultra-large market capitalization leaders.

On the macro level, on March 27, the National Bureau of Statistics announced that from January to February, the total profit of industrial enterprises above designated size nationwide reached CNY 10,245.6 billion, a year-on-year increase of 15.2%, with the growth rate accelerating by 14.6 percentage points compared to the entire previous year, maintaining positive improvement for seven consecutive months, indicating a continuous recovery in the profitability of industrial enterprises and injecting positive signals into the market.

The "A Series" broad-based ETFs under E Fund are all low-fee products, as detailed in the image below:

Risk warning: Funds carry risks; investment should be cautious

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