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A-share afternoon review | The GEM index rose 2.35%, and the semiconductor industry chain came to a standstill

Zhitongcaijing·09/16/2026 03:49:01
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The Zhitong Finance App learned that on September 16, the three major A-share indices opened slightly lower, then fluctuated and collectively became popular. The Science and Technology Innovation 50 Index strongly led the way, and the market showed a structural differentiation pattern of “leading technological growth and strengthening of the entire semiconductor industry chain”. By the midday close, the Shanghai Index rose 0.57% to 3886.48 points, the Shenzhen Index rose 1.42% to 13476.85 points, the GEM index rose 2.35% to 3324.36 points, and Science Innovation 50 rose 4.50% to 1621.75 points. More than 4,200 stocks rose across the market. The half-day turnover of the Shanghai, Shenzhen and Beijing markets was 1173.8 billion yuan, an increase of 108.6 billion yuan over the previous trading day. In terms of capital, the main capital flowed net into sectors such as communications, electronics, and semiconductors in early trading, with the largest inflow in the communications direction.

Overview of the plate

On the upward side, on the upward side, semiconductor materials, lithography, optical fiber concepts, and CPO sectors registered the highest gains, while precious metals and PCB concepts showed active performance; on the downside, the automotive, banking, and insurance sectors registered the highest declines. Overall, capital flows were concentrated in the direction of electronic technology such as semiconductors and communications, and there was a slight correction in the direction of weighted finance and consumption such as automobiles, vehicles, pork, etc., and individual stocks in the entire market rose more or less.

Popular sections

1. The semiconductor industry chain is strengthening across the board

Strong performance in the direction of semiconductor materials was strong. There was a 20% increase or decrease in Sinocrystalline Technology, two consecutive sales, and Luciao Technology, and Jingsheng Co., Ltd. and Minde Electronics also rose and stopped 20%, while Shanghai Hejing, Tianyue Advanced, and Shanghai Silicon had the highest gains.

Comment: According to the news, on September 15, the Ministry of Industry and Information Technology and the National Development and Reform Commission jointly issued the “15th Five-Year Plan for the Development of the Electronic Information Manufacturing Industry”, which proposes that the operating income of enterprises above scale will exceed 30 trillion yuan by 2030, clearly promote the full integrated circuit chain research, promote the high-end development of electronic components and electronic materials, and consolidate the foundation for the development of the photonic industry.

2. The optical fiber concept runs low, runs high

The optical fiber concept sector opened low and moved higher. Guangxun Technology, Huamai Technology, Yongding Shares, and Zhishang Technology rose and stopped, while Changxin Bochuang, Changguang Huaxin, and JPT registered the highest gains.

Comment: According to the news, Goldman Sachs drastically raised the demand forecast for high-speed optical modules after visiting 15 optical communication companies in China, raised the 2027 and 2028 demand forecasts for 800G and above optical modules by 39% and 36%, respectively, and determined that the price of 1.6T optical modules would remain above 700 US dollars. At the same time, the FCC's final rule did not include optical modules in the scope of restrictions, and the supply chain restrictions previously feared by the market did not occur. In addition, at the 27th China International Optoelectronics Expo (CIOE 2026), a number of optical communication manufacturers focused on exhibiting NPO solutions and supporting external light source modules.

3. The precious metals sector fluctuated higher

The precious metals sector fluctuated higher, and Lai Shen Tongling rose or stopped, while Sichuan Gold, Zhaojin Gold, and Chifeng Gold registered the highest gains.

Comment: According to the news, spot gold once hit 4,330 US dollars/ounce, up about 0.8% during the day; spot silver increased by more than 1.5% during the day.

4. The PCB concept rebounds

The PCB concept rebounded. Aohong Electronics had 4 consecutive boards, Welco went up and down 20%, Oshcon went up and down, and Yibo Technology, Jinlu Electronics, and Zhongjing Electronics followed suit.

Comment: According to news, the price of upstream PCB copper-clad sheets and electronic cloth continues to rise. According to data from Zhuochuang Information, the factory price of 7628 electronic cloth has risen to 11.5 yuan/meter to 12.1 yuan/meter, up 10% to 20% month-on-month; China Jushi's electronic cloth price increased in September, with thick cloth rising 15% and thin cloth 20%.