ChiNext Index Surges Past 4,200 to Hit All-Time High as AI Computing Hardware Stocks Soar
Miles Bennett
China's ChiNext index jumped over 3% Wednesday to a record high, led by AI computing hardware — Tifu Communication rose more than 12% and multiple optical-module leaders hit all-time peaks, signaling a broad repricing of China's AI hardware supply chain.
Which stocks led the charge?
Tifu Communication (天孚通信) surged over 12%, topping the sector. The company makes optical components — the small parts that route light signals between fibers — and is a core name in China's CPO and high-speed optical-module supply chain.
Eoptolink (新易盛) and Zhongji Innolight (中际旭创) both rallied more than 8%, hitting intraday record highs. Both benefit directly from surging demand for 400G/800G optical modules in data centers.
This means → capital is not chasing a single stock but buying the entire "AI optical-communication" chain at once — a stronger signal than any one name hitting a new high.
Why did mid-stream suppliers hit limit-up too?
Hengtong Optic-Electric hit the daily limit. The company runs both fiber-optic cable and submarine cable lines, and both are catching orders from AI infrastructure buildouts.
Xunjie Xing and Ebo Technology both hit limit-up. The former makes PCBs — printed circuit boards, the base plates that chips and optical modules sit on — while the latter provides high-speed PCB design services. More AI computing capacity means more work for both.
Dongcai Technology, a copper-clad laminate maker (the core raw material for PCBs), also hit limit-up. In plain terms = from raw copper-foil material all the way to finished optical modules, the entire supply chain rallied — not a single link was left behind.
What does the ChiNext record high tell us?
The ChiNext index rose over 3% on the day, breaking through its previous all-time high — the strongest performance among China's major broad-market indices.
Tech and healthcare carry heavy weight in ChiNext's market-cap structure, so this hardware-driven rally lifted the whole index.
This reflects a shift in market logic from "AI concept speculation" to "hardware supply-chain order delivery." Institutional buying rests on improving order visibility as overseas hyperscale data-center capex keeps getting revised upward — not just narrative.
What is the core driver behind this rally?
Major global cloud operators continue to raise data-center capital spending, and Chinese optical-module, PCB, and upstream-material companies are seeing a clear pickup in export-order visibility.
This means → the money is not appearing out of thin air — behind it are real purchase orders ramping up, and capital is repricing the entire Chinese AI hardware supply chain accordingly.
Put simply = overseas operators need more data centers, data centers need optical modules and circuit boards, Chinese firms are key suppliers — so order growth is showing up directly in share prices.
Content is for reference only, not financial advice.