Shanghai, Jan 26, 2026, 08:16 China Standard Time — Premarket
- JCET shares ended Friday at 49.02 yuan, wrapping up a volatile week with sharp swings in both directions.
- The advanced-packaging sector has remained active through January, fueling volatility in chip stocks.
- China’s central bank is set to adjust liquidity this week, while the next earnings date also draws attention.
JCET Group Co., Ltd.’s Class A shares on the Shanghai exchange are set to open Monday following a weaker close last week, as investors took a breather after a rapid January rally in chip stocks. The shares ended last session at 49.02 yuan, marking roughly a 33% gain since the beginning of 2026.
The spotlight is on “advanced packaging” — the crucial back-end process that transforms chips into ready-to-use components — which has turned into a hot topic in the market, driven by the move toward chiplet designs. Wind’s advanced packaging index has surged 33.16% year-to-date through Jan. 22. JCET stands out as one of the key players caught up in this momentum. Sina Finance
Macro liquidity factors are at work as mainland markets kick back into gear after the weekend. According to wind data reported by China Securities Journal, reverse repos worth 1.181 trillion yuan are set to mature during the week of Jan. 26–30. Monday alone sees 158.3 billion yuan maturing, paired with 200 billion yuan in one-year MLF loans.
JCET’s shares have been volatile. On Jan. 16, the stock surged to the 10% daily limit-up—the highest gain permitted on China’s main exchanges—then climbed another 6.3% on Jan. 21. It fell 6.1% the following day and edged down 0.8% on Friday, according to Investing.com data.
The broader market showed more stability on Friday. The Shanghai Composite closed 0.33% higher at 4,136.16, with the Shenzhen Component gaining 0.79%, according to state news agency Xinhua.
The tech tape showed some cracks. A market wrap from Securities Times flagged the CPO theme as one of the day’s weaker spots, highlighting how fast momentum money can shift away from once-“hot” plays. STCN
JCET grabbed headlines last week by announcing advances in co-packaged optics (CPO) products. The company delivered a silicon photonic engine sample to a customer and cleared client-side testing. Operating in chip packaging and testing—the OSAT segment—JCET occupies a crucial bottleneck spot for cutting-edge chips.
“The move toward high‑integration CPO devices boosts system performance and changes the value chain,” JCET vice president Jin Yujie told EET-China. CPO, a rising technique, places optical links nearer processors, reducing power consumption and increasing bandwidth in data-centre setups. EE Times China
Not every peer moved together on Friday. Tongfu Microelectronics inched up 0.61%, Huatian Tech climbed 3.10%, but JCET dropped 0.77%, per Investing.com’s HS China A Semiconductors components list.
The downside is clear: the stock has already made a big move and now trades below its 52-week high, opening the door for steep profit-taking if the sector loses steam or early-stage CPO milestones fall short. According to Investing.com, JCET’s 52-week range stands between 28.90 and 54.63 yuan.
JCET’s upcoming earnings report is scheduled for April 10. Investors will be keen to see updates on advanced-packaging demand, revenue visibility tied to CPO, and margins.
