The trading day was dominated by a surge in technology stocks.
The market opened lower but climbed throughout the session on June 17th. The ChiNext Index rose over 1% in the afternoon, while the STAR 50 Index surged more than 4%. At the close, the Shanghai Composite Index was up 0.4%, the Shenzhen Component Index gained 1.31%, and the ChiNext Index increased by 1.56%.
Overall, 1,723 stocks advanced, with 96 hitting their daily limit-up, while 3,734 stocks declined.
Chip stocks strengthened significantly in the afternoon session. Companies like GigaDevice, Puya Semiconductor, and ACM Research saw their shares hit limit-up and reach new highs.
Shares related to glass substrates experienced a collective surge. Boe Technology Group Co.,Ltd. (SHE: 000725), Wogene, and Caihong Group were among those that rose by the 10% limit.
The PCB (printed circuit board) sector continued its strong performance, with Shennan Circuits, Huazheng New Material, and China Jushi also reaching limit-up and setting new record highs.
On the downside, the coal sector faced selling pressure, with Yunnan Coal & Energy dropping over 6%.
Tourism-related stocks, as well as sectors like poultry, entertainment consumption, and pre-made dishes, were among the day's worst performers.
Catalysts for the Tech Rally
The significant gains in the technology sector were driven by policy announcements. The Chairman of the China Securities Regulatory Commission stated at the 2026 Lujiazui Forum that recent reforms for the STAR Market will include expanding the application of the fifth set of listing standards to the artificial intelligence sector, actively supporting high-quality large AI model companies to go public. Additionally, to implement the strategic deployment for developing future industries, support will be given to "hard tech" companies in fields like quantum technology, bio-manufacturing, and embodied intelligence to list on the STAR Market.
Focus on a Key Stock
In a notable move, Boe Technology Group Co.,Ltd. (SHE: 000725), often referred to as a hub for retail investors in the A-share market, quickly rallied to its limit-up at the open. By the market close, buy orders queued at the limit-up price exceeded 2 million lots.
The surge followed news that the company's Chengdu 8.6-generation OLED production line, China's first such facility with a total investment of 63 billion yuan, officially commenced mass production and delivered its first batch of products. This development is expected to drive the large-scale adoption of medium-sized high-end OLED panels and aid the expansion of the AI PC market.
AMOLED is a display technology known for purer blacks, higher color saturation, thinner profiles, and bendability. Currently, only South Korea and China have established 8.6-generation AMOLED production lines globally.
In related industry news, TSMC announced a development plan for glass substrates in its CoWoS advanced packaging to its supply chain, confirming collaboration with ABF substrate supplier Ibiden and panel maker Innolux to verify the feasibility of integrating glass substrates. This marks TSMC's first public disclosure of progress in glass substrate technology application, signaling its formal entry into the industrial validation phase.
Boe Technology Group Co.,Ltd. (SHE: 000725) has historically been known as a "retail investor hub" due to its large shareholder base. As of March 6, 2026, the number of its shareholders reached 1 million.
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