Shanghai, Jan 18, 2026, 09:45 CST — Market closed.
JCET Group Co., Ltd. Class A shares (600584.SS) closed Friday at a 52-week peak, hitting the daily limit-up at 48.39 yuan. On the Shanghai exchange, the main board typically restricts single-session moves to 10%. 1
The stock gained 17.5% over the past five sessions and has climbed roughly 31.6% year-to-date, according to MarketScreener data. This rally in early January has pushed JCET into one of the more heavily traded chip names for the upcoming week. 2
Friday saw chip sectors rally despite a softer overall market. China’s “storage chip” segment jumped 4.08%, and “advanced packaging” climbed 3.53%, according to Securities Times. The Shanghai Composite dipped 0.26% on the day. JCET stood out with some of the largest net “main fund” inflows within these themes. 3
Why it matters now: With turnover hitting record levels and the benchmark lingering near decade highs, Beijing is clamping down on what it calls excessive speculation. Chinese exchanges announced they will raise the minimum margin requirement for new borrowings to 100% from 80%, effective Jan. 19. This means investors must now put up full cash collateral when borrowing to buy shares, a move greenlit by the securities regulator. 4
JCET’s Friday session stood out, even among chip stocks. It kicked off at 45.00 yuan, fluctuated from 44.80 up to 48.39, and racked up roughly 9.29 billion yuan in turnover, reflecting an 11.01% turnover ratio, according to Moomoo data. 5
Optimism around chips continues to fuel the market. TSMC announced plans to spend $52 billion to $56 billion on capital projects in 2026, sparking a strong rally in the sector. Han Dieperink, CIO at Aureus, commented, “The market has underestimated again how large is the demand for AI, and the implementation is going faster than everybody expected.” 6
JCET offers chip manufacturing and technical services, covering packaging and testing. According to Reuters company data, its applications span mobile devices, high-performance computing, and automotive electronics. 7
This wasn’t a solo surge. Tongfu Microelectronics (002156.SZ) jumped 10% on Friday, closing at 46.86 yuan. Huatian Technology (002185.SZ) also gained 6.54%, ending the day at 12.70 yuan, according to data from exchange-linked services. 8
But daily limit-ups aren’t a one-way street. When leverage retreats or profit-taking hits momentum names, that same liquidity pushing shares up can vanish fast—especially in sectors already showing heavy turnover.
The next hurdle arrives when onshore trading kicks back in on Monday, Jan. 19, under the new higher margin rules. Attention is also on JCET’s upcoming earnings report, set for April 9, per Investing.com’s earnings calendar. 9
