On June 9, the market rebounded. The Shanghai Composite gained over 1% to reclaim 4,000 points, the Shenzhen Component rose over 3%, the ChiNext opened higher and surged nearly 4%, and the STAR 50 jumped over 4%.
By sector, the semiconductor chain continued to strengthen. NSIG hit the daily 20% limit, hitting a near 4-year high. Kingsemi, Fuchuan Precision, and others also hit limit-up. The fiber optics concept exploded in the afternoon, with Hengtong Optic-Electric hitting the limit-up instantly, achieving 3 limit-ups in 6 days, and Yangtze Optical Fiber also hit the limit-up.
On the downside, oil stocks continued to correct, with Tongyuan Oil leading the decline. Coal stocks collectively fell, with Dayou Energy among the top losers. The real estate sector turned broadly red, with Rongan Real Estate leading the decline.
Overall, gainers outnumbered losers, with over 3,300 stocks rising.
At the close, the Shanghai Composite was at 4,010.03 points, up 1.28%; the Shenzhen Component at 15,268.71 points, up 3.02%; the ChiNext at 3,961.75 points, up 3.93%.
On the board, electronic chemicals, semiconductors, and memory chips led gains; oil & gas extraction, coal mining & processing, and baijiu sectors led declines.
Hot Sectors
1. Fiber Optics Concept
Hengtong Optic-Electric hit the daily limit-up in the afternoon, achieving 3 limit-ups in 6 days. Its stock has surged over 300% year-to-date. Yangtze Optical Fiber also hit the limit-up again, with the latest share price at 484.33 yuan. Compared to its price of 34.50 yuan on June 18, 2025, the stock has achieved over 10x gains.
On the news front, on June 8 local time, Amazon announced a multi-billion dollar agreement with Corning to procure optical fiber, cables, and connection solutions to support its data center expansion across the U.S. The deal will add 1,000 high-skilled jobs and hundreds of construction jobs at Corning's North Carolina plant.
This move extends Amazon's $10 billion cloud infrastructure investment in the state announced last year. Following Meta and Nvidia, the global tech giants' scramble for fiber optics continues to heat up.
Additionally, according to CCTV Finance on June 3, demand for A2-type fiber preforms, a high-end product category, is experiencing explosive growth. Industry insiders say fiber preforms, as upstream material for cables, account for 70% of industry profit distribution.
The most sought-after preform is the “A2-type fiber preform”, which produces fiber with strong bending resistance, widely used in AI computing infrastructure and home access scenarios. Data shows that the quotation for A2-type preforms rose from 22-30 yuan per equivalent core km at the start of 2025 to 160 yuan by mid-2026, a surge of nearly 550%.
2. Semiconductor Chain
NSIG hit the daily 20% limit, reaching a near 4-year high. Kingsemi, Fuchuan Precision, and others also hit limit-up.
On the news front, Jensen Huang visited South Korea and reached a multi-billion dollar long-term HBM supply agreement with SK Hynix, confirming that the AI computing and HBM shortage cycle will continue for years. Samsung, SK Hynix, and Micron are simultaneously advancing advanced packaging and fab expansion, driving demand across the entire semiconductor engineering, equipment, and consumables chain.
Upstream electronic resins, glass fiber (CCL substrate) and other material prices are rising. Capital flows orderly along the chain: “Memory chips → packaging materials → CCL substrates → cleanroom engineering & equipment.”
Coupled with rebounds in Japanese and Korean stock markets, strong performances by global semiconductor leaders, and global AI sentiment boosts from Apple WWDC and OpenAI IPO, capital has notably flowed back into A-share semiconductor stocks, with momentum continuing to consolidate.
