HK Stocks Midday: Hang Seng Index Falls 1.19%, Optical Communication Sector Bucks Trend to Lead Gains
Claire Weston
The Hang Seng fell 1.19% to 22,752 at midday, yet the Hang Seng Tech Index rose 1.4% — optical communications and robotics led as Corning's new tech and overseas capital flows gave the sectors a double catalyst.
The broad market fell — so why are tech stocks rising?
The Hang Seng shed 273 points to 22,752; morning turnover hit HK$139.9 billion, signalling real selling pressure.
The Hang Seng Tech Index bucked the trend, climbing 1.4% — money visibly rotated out of heavyweight names and into the tech chain.
This means → the market is not short of cash; it is changing direction. Capital is betting on two supply chains: optical communications and robotics.
Why did optical communications suddenly become the hottest sector?
Corning unveiled its Glass Bridge technology, targeting CPO architecture — co-packaged optics, a design that puts optical components inside a chip package to sharply boost data-transfer speeds.
A leading optical-communications stock was simultaneously added to the FTSE Russell index family, meaning passive funds that track these indices will buy in automatically.
Under this double catalyst, O-Net Technologies (01191) surged 15% and YOFC (06869) rose 7.9%.
In plain terms = new technology opens the market's imagination on one side, and index inclusion brings real buying power on the other — both forces arrived at the same time.
What is driving the robotics and semiconductor-equipment rally?
Robotics names stayed strong: L.K. Technology (00558) rose 8%, Estun Automation (02715) gained 10%, and Sanhua Intelligent Controls (02050) climbed over 6%.
South Korea announced a major government AI-industry investment plan. Semiconductor-equipment maker ASMPT (00522) jumped more than 11%, hitting a fresh all-time high.
This means → government-level capex expansion overseas directly benefits equipment makers with Asian capacity — the market is pricing in "order certainty."
Four IPOs debuted on the same day — who won, who lost?
Zhenjian Healthcare-B (02697) soared 197% by midday. The company makes puncture-surgery robots and is the first listed pure-play in that niche.
Xunlong Technology (06715) rose 45% — the world's top caviar seller by volume for 11 straight years. Laifuharmonic (03952) gained 12%; it ranks second among China's harmonic-reducer suppliers — a precision gear component at the heart of every robot joint.
Jiangxi Biological (06915) fell 9.8%. The company is the world's largest producer of human TAT (tetanus antitoxin), yet broke its IPO price on day one.
This reflects a clear preference: the market pays up for "hard tech + scarcity" but stays cautious on traditional biologics.
Which single-stock moves stand out?
DiDi Chuxing (02559) surged over 90% after Tongcheng Travel offered a full buyout at a premium exceeding 9% and proposed a special dividend — a textbook event-driven spike.
Yidu Tech (02158) rose more than 13% after swinging to profit in FY2026 with operating cash flow turning positive. Tsugami China (01651) jumped over 15% post-results; full-year net profit grew nearly 40% year-on-year, sending the stock to an all-time high.
Shenghong Tech (02476) climbed over 8%; its Huizhou mSAP workshop meets 1.6T optical-module production requirements, tying it directly to the optical-communications expansion story.
Which sectors are dragging the market down?
Airlines fell again: China Eastern (00670) dropped 8% and Air China (00753) lost 5%. Brokerages flagged that Q2 earnings may slide sharply on fuel costs; cross-strait tensions and oil prices will shape the trajectory.
Gold miners led decliners: expectations of sustained high rates plus a strong dollar weighed on bullion. Spot gold briefly broke below US$3,950; Zijin Gold International (02259) and Lingbao Gold (03330) each fell 7%.
Budweiser APAC (01876) slid more than 4%, approaching its historic low — second-quarter performance trailed expectations as rising marketing costs squeezed gross margins.
In plain terms = airlines answer to oil prices, gold stocks answer to the dollar, and consumer names answer to costs — all three lines face pressure from external variables, not company-specific problems.
Content is for reference only, not financial advice.