---
title: "A-share midday review: The STAR 50 Index rose over 1% in half a day, with more than 1,400 stocks in the market rising, led by PCB and CPO concepts"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/289995555.md"
description: "The A-share midday review on June 17 showed mixed performance among the three major indices, with the Shanghai Composite Index slightly down and the STAR 50 rising over 1%. The PCB, glass substrate, and supercapacitor concepts led the gains, while the shipping and power sectors performed actively due to positive news. The electronic specialty gas concept rebounded. Over 4,000 stocks in the entire market declined, with a trading volume of nearly 2 trillion"
datetime: "2026-06-17T03:45:39.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/289995555.md)
  - [en](https://longbridge.com/en/news/289995555.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/289995555.md)
---

# A-share midday review: The STAR 50 Index rose over 1% in half a day, with more than 1,400 stocks in the market rising, led by PCB and CPO concepts

On June 17, the three major indices showed mixed results, with the Shanghai Composite Index turning negative and the STAR 50 Index rising over 1%. The half-day trading volume in the Shanghai and Shenzhen markets was 1.95 trillion yuan, a decrease of 99.4 billion compared to the previous trading day. The market was somewhat chaotic, with over 4,000 individual stocks declining.

From the sector perspective, the PCB concept surged again, with more than a dozen constituent stocks hitting the daily limit. Hongchang Electronics had five consecutive limit-ups in seven days, Huazheng New Materials achieved three consecutive limit-ups, and Shenzhen South Circuit hit the limit, with its stock price reaching a historical high. The glass substrate (core stock) concept continued to be strong, with Qibin Group achieving three consecutive limit-ups, BOE A, Mediatek, and Rainbow Shares hitting the limit. The supercapacitor (core stock) concept saw a sudden rise, with Haixing Shares achieving three consecutive limit-ups, and Aihua Group and Tongfeng Electronics hitting the limit. On the downside, the large consumption (core stock) sector experienced fluctuations and adjustments, with tourism and film sectors leading the declines, as Tianfu Cultural Tourism, Caesar Travel, and Bainaqiancheng all fell sharply. By the close of the morning session, the Shanghai Composite Index was down 0.18%, the Shenzhen Component Index was up 0.39%, and the ChiNext Index closed in the green.

**Hot Industries**

**1\. Shipping (core stock) sector performed actively**

COSCO Shipping Energy hit the limit, with China Merchants Industry, China Merchants South Oil, China Shipbuilding (core stock), and Air China Oceanic following suit.

In terms of news, Goldman Sachs released a research report stating that with the reopening of the Strait of Hormuz, the previous oversupply situation of about 9% to 11% in crude oil and refined oil tanker transportation caused by the closure of the strait will be reversed.

**2\. Power sector saw intraday fluctuations and rises**

Yue Electric Power A hit the limit, with Jiuzhou Group, Datang Power, Jinkong Power, Gansu Energy, and Jiantou Energy following suit.

In terms of news, the latest forecast from State Grid (core stock) indicates that the highest electricity load across the network this summer will exceed 1.3 billion kilowatts, a year-on-year increase of about 6%, with a clear trend of sustained demand growth. Two main factors provide core support: first, the normalization of high summer temperatures significantly increases residential cooling loads, driving basic electricity growth; second, the accelerated production of AI computing centers and data centers continues to expand industrial computing (core stock) electricity consumption, becoming a new main force.

**3\. Electronic special gases (core stock) concept rebounded during the day**

Zhongjuxin rose over 10%, continuing to set historical highs, with Guanggang Gas, Yake Technology, Zhengfan Technology, Silane Technology, Haohua Technology, and China Shipbuilding Special Gas all rising.

In terms of news, customs data showed that the average export price of domestic hexafluorotungsten in April surged by 203.83% year-on-year, and as of early June, the domestic market price of 5N-grade products had increased by over 230% year-on-year, with the average price in June expected to rise further; simultaneously, categories such as helium are also in short supply, leading to increased market price fluctuations.

**4\. Optical fiber concept (core stock) was repeatedly active**

Tongding Interconnection approached the limit, with Hangzhou Electric Co. achieving three consecutive limit-ups, and Yongding Shares, Zhongtian Technology, and Fenghuo Communication following suit.

In terms of news, Guosheng Securities' research report stated that the volume increase of high-speed optical modules directly drives a surge in MPO demand, as MPO connectors are standard supporting devices for high-speed optical modules. With the accelerated construction of AI computing (core stock), the demand for high-speed optical modules continues to rise, directly driving the simultaneous explosion in demand for MPO connectors as their core connecting components.

**5\. A-share market PCB concept stocks collectively strengthened** Among them, Yibo Technology approached a 20% limit up, Kexiang Co., Ltd. rose over 18%, Nanya New Materials rose over 12%, Zhongjing Electronics, Huazheng New Materials, Shennan Circuit, Xingsen Technology, and Ultrasonic Electronics hit a 10% limit up, Chaoying Electronics and Mingyang Circuit rose over 7%, Shengyi Electronics and Baoding Technology rose over 6%, Bomind Electronics, Hu Dian Co., Ltd., Shengyi Technology, Zhongfu Circuit, and Yidun Electronics rose over 5%. Yibo Technology, Kexiang Co., Ltd., Nanya New Materials, Huazheng New Materials, Shennan Circuit, Xingsen Technology, Chaoying Electronics, Shengyi Electronics, Hu Dian Co., Ltd., Shengyi Technology, Baoding Technology, and Aoshikang reached historical highs. On the news front, on June 16, the global copper-clad laminate industry leader, Kingboard Laminates, officially released a new round of product price increase notice, announcing a unified price increase of 15% for all specifications of FR-4 copper-clad laminates and PP prepregs, effective from the date of receiving new orders. As a benchmark enterprise in the domestic and even global copper-clad laminate industry, Kingboard's significant price adjustment directly reflects the severe industry situation of supply-demand imbalance and high production costs in the upstream raw materials of the copper-clad laminate industry.

**Institutional Views**

**Galaxy Securities: AI servers and data centers drive simultaneous increase in CCL volume and price**

Galaxy Securities released its mid-term strategy for the electronics industry in 2026, stating that AI servers and data centers are driving simultaneous increases in CCL volume and price. PCBs are mainly composed of CCL, copper lines, insulation layers/protective layers, etc. CCL accounts for about 50%-60% of the value in AI PCs (core stocks). The R&D and mass production of low dielectric, low loss CCL are accelerating, with global M8 and below products already in mass production by 2025. The demand structure for CCL continues to shift towards emerging fields. In the AI computing power (core stocks) sector, AI servers and data centers are driving demand for high-layer, low-loss CCL. Since 2026, leading CCL companies have continued to raise prices frequently and significantly, with a total of 4 price increases this year; Shengyi Technology, Nanya New Materials, and others have also followed suit. The trend of price increases is expected to continue in the second half of 2026, benefiting materials such as copper foil, electronic cloth, and resin in the CCL composition.

**CITIC Construction Investment: Rapid growth in high-frequency and high-speed demand for computing power (core stocks), electronic-grade PTFE expected to be widely applied**

The main characteristics of PTFE materials include excellent thermal stability, chemical resistance, and dielectric properties. The three major demands for PTFE downstream—military (core stocks), high-speed server cables, and high-speed boards—are expected to grow rapidly. As NVIDIA's new generation server Rubin ultra approaches mass production, there is active discussion within the industry about the possibility of using PTFE materials as orthogonal backplanes. CITIC Construction Investment believes that with the continuous growth of high-frequency and high-speed transmission demand led by computing power (core stocks) infrastructure, the downstream fields of PTFE are expected to be redefined.

**Huatai Securities: Oil price drop catalyzes airline rebound**

Huatai Securities' research report states that against the backdrop of high oil prices, airlines further cut low-yield routes. In May, civil aviation (core stocks) supply was under pressure year-on-year, but the passenger load factor and ticket prices of retained routes remained relatively strong. The three major airlines (Air China/Eastern Airlines/Southern Airlines) + Spring Airlines + Juneyao Airlines saw ASK/RPK decrease by 3.6%/2.1% respectively, while the passenger load factor increased by 1.3 percentage points to 85.9%. Meanwhile, according to data from Flight Manager, from week 18 to week 22 (April 27 to May 30), domestic routes with oil ticket prices increased by 17.5%, and airlines maintained strong pricing power Looking ahead, the recent drop in oil prices is expected to alleviate cost pressures for airlines and issues related to flight reductions, catalyzing a rebound in the sector. The medium to long-term trend of tightening supply remains unchanged; if the oil price center continues to decline, it may lead to a reversal in the sector.

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