Jiangsu Yitong High-tech vs Yangtze Optical Fibre and Cable Joint Stock: why the prices moved differently

Weekly · monthly · quarterly news summaries, side by side in time

Jiangsu Yitong High-tech Co Ltd (300211.CS)

Yangtze Optical Fibre and Cable Joint Stock Ltd Co (601869.CG)

Q3 20269 Jul – 27 Aug 2026

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AI Data-Centre Demand and Policy Support Drive Yangtze Optical, but Insider Selling and Capacity Fears Weigh

Explosive H1 2026 Earnings Net profit surged 888.88% to 2.925 billion yuan on 53.64% revenue growth, with a sixth straight quarterly margin gain, driven by AI data-centre demand, overseas expansion, and Nvidia's CPO mass production.
This is the primary positive fundamental driver of the stock's performance during the period.
State Council Backing for Next-Generation Networks China's State Council announced support for next-generation networks, providing a policy tailwind that benefits Yangtze Optical as a key player in optical fibre and cable.
This new policy support adds to the positive outlook and investor sentiment for the company.
Major Shareholder Selling Near Highs Yangtze Communications sold nearly 1 million A-shares for 412 million yuan after a 279% run, signalling that a large holder is cashing out and raising concerns about the stock's valuation.
This insider selling is a significant negative signal that likely pressured the stock price during the period.
Capacity-Expansion Fears and Tech Slump Fears of industry-wide capacity expansion triggered a sector selloff, and a July tech slump sent CPO names, including Yangtze Optical, to limit down, leaving sentiment fragile despite the strong upcycle.
These factors caused sharp price declines and reflect ongoing risks to the stock's momentum.

August 202620 Jul – 27 Aug 2026

▲3

Record profit surge and AI-driven fiber demand lift Yangtze Optical

Interim profit jumps 888.88% on strong margins Yangtze Optical's first-half net profit soared 888.88% to 2.925 billion yuan, with revenue up 53.64% and gross margin at 53.36% for a sixth straight quarterly gain. This shows the company is earning far more from each sale, directly boosting its value.
The profit surge is the core fundamental driver of the stock's recent strength.
Nvidia's blowout results and CPO mass production boost fiber demand Nvidia's earnings beat expectations and it announced full mass production of its CPO optical switching platform, signaling a surge in AI data center demand for optical fiber and cable. This directly increases the need for Yangtze Optical's products, pushing the stock up.
Nvidia's news is a fresh demand catalyst that lifts the whole optical communications sector.
State Council backs next-generation communications networks China's State Council pledged to advance next-generation communications network construction, a policy that supports long-term demand for fiber and cable. This gives investors confidence in steady future orders for Yangtze Optical.
Government support is a new positive signal for the company's demand outlook.

Latest20 Jul – 27 Aug 2026

▲3

Record profit surge and AI-driven fiber demand lift Yangtze Optical

Interim profit jumps 888.88% on strong margins Yangtze Optical's first-half net profit soared 888.88% to 2.925 billion yuan, with revenue up 53.64% and gross margin at 53.36% for a sixth straight quarterly gain. This shows the company is earning far more from each sale, directly boosting its value.
The profit surge is the core fundamental driver of the stock's recent strength.
Nvidia's blowout results and CPO mass production boost fiber demand Nvidia's earnings beat expectations and it announced full mass production of its CPO optical switching platform, signaling a surge in AI data center demand for optical fiber and cable. This directly increases the need for Yangtze Optical's products, pushing the stock up.
Nvidia's news is a fresh demand catalyst that lifts the whole optical communications sector.
State Council backs next-generation communications networks China's State Council pledged to advance next-generation communications network construction, a policy that supports long-term demand for fiber and cable. This gives investors confidence in steady future orders for Yangtze Optical.
Government support is a new positive signal for the company's demand outlook.

July 20269 Jul – 17 Jul 2026

▼3▲1

Profit surge confirmed, but insider selling and capacity fears weigh

Major shareholder cashes out near highs Yangtze Communications sold nearly 1 million A-shares for 412 million yuan, booking a 376 million yuan gain — more than its own 2025 net profit. It still holds 14.23%, but the sale signals a large holder taking money off the table after a 279% run, which can pressure the stock.
A concrete large-holder sale is a real supply overhang that can cap the share price.
Capacity expansion worries hit fibre stocks Optical fibre shares plunged, with Changyingtong down 20% and Yangtze Optical Fibre off over 6%, as investors feared a wave of new industry capacity could repeat the sector's boom-bust cycle. Insiders say new capacity faces hurdles, but the fear itself is a drag.
This is the main counterweight to the bullish demand story and explains sector-wide selling pressure.
First-half profit to jump 711%-914% Yangtze Optical Fibre expects net profit of 2.4-3 billion yuan for the first half, up 711%-914%, driven by data-centre construction, strong demand for new fibre and cable products, and overseas expansion. Peers Hengtong and ZTT also posted strong forecasts, confirming an industry upcycle.
The earnings pre-announcement is the core fundamental driver behind the stock's re-rating.
Tech selloff drags CPO names to limit down On July 17 the tech sector slumped, with CPO concept stocks plunging; Yangtze Optical Fibre, Dongshan Precision and Accelink all hit the daily limit down as the ChiNext fell 4.71%. The broad market retreat shows sentiment is fragile after the huge run.
It shows the stock is now exposed to sharp sector-wide sentiment swings, a risk to near-term price.

9 Jul – 17 Jul 2026

▼3▲1

Profit surge confirmed, but insider selling and capacity fears weigh

Major shareholder cashes out near highs Yangtze Communications sold nearly 1 million A-shares for 412 million yuan, booking a 376 million yuan gain — more than its own 2025 net profit. It still holds 14.23%, but the sale signals a large holder taking money off the table after a 279% run, which can pressure the stock.
A concrete large-holder sale is a real supply overhang that can cap the share price.
Capacity expansion worries hit fibre stocks Optical fibre shares plunged, with Changyingtong down 20% and Yangtze Optical Fibre off over 6%, as investors feared a wave of new industry capacity could repeat the sector's boom-bust cycle. Insiders say new capacity faces hurdles, but the fear itself is a drag.
This is the main counterweight to the bullish demand story and explains sector-wide selling pressure.
First-half profit to jump 711%-914% Yangtze Optical Fibre expects net profit of 2.4-3 billion yuan for the first half, up 711%-914%, driven by data-centre construction, strong demand for new fibre and cable products, and overseas expansion. Peers Hengtong and ZTT also posted strong forecasts, confirming an industry upcycle.
The earnings pre-announcement is the core fundamental driver behind the stock's re-rating.
Tech selloff drags CPO names to limit down On July 17 the tech sector slumped, with CPO concept stocks plunging; Yangtze Optical Fibre, Dongshan Precision and Accelink all hit the daily limit down as the ChiNext fell 4.71%. The broad market retreat shows sentiment is fragile after the huge run.
It shows the stock is now exposed to sharp sector-wide sentiment swings, a risk to near-term price.