POET vs GigaDevice Semiconductor(Beiji: why the prices moved differently

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

POET Technologies Inc (POET)

Q2 202619 Jun – 2 Jul 2026

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POET's AI optical tech draws buyers, but legal and order-cancellation risks weigh

Class action lawsuits over tax status and confidentiality Multiple law firms filed a securities class action against POET, alleging it hid its likely passive foreign investment company tax status and that an executive broke a confidentiality agreement. This legal cloud can scare investors and pressure the stock down.
This is a major new legal risk that directly weighs on POET's price.
Marvell/Celestial AI order cancellations Marvell Semiconductor canceled all purchase orders from Celestial AI, citing unauthorized disclosures. This removed a key customer and caused a sharp stock drop. The lost orders hurt revenue expectations and investor confidence.
This is a concrete demand loss that explains recent price weakness.
AI data center optical bottleneck opportunity POET's optical interposer technology addresses data movement bottlenecks in AI data centers. Investors see big upside if it scales, as AI clusters need faster, lower-power connections. This is the main growth story pushing the stock up.
This is the core positive driver behind POET's long-term appeal.
Lumilens supply agreement and $50M order POET signed a supply deal with Lumilens for an electrical-optical interposer, with an initial $50 million order that could grow to over $500 million in five years. This validates its tech and adds a new revenue stream.
This is a new commercial win that supports the bullish case.

June 202619 Jun – 2 Jul 2026

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POET's AI optical tech draws buyers, but legal and order-cancellation risks weigh

Class action lawsuits over tax status and confidentiality Multiple law firms filed a securities class action against POET, alleging it hid its likely passive foreign investment company tax status and that an executive broke a confidentiality agreement. This legal cloud can scare investors and pressure the stock down.
This is a major new legal risk that directly weighs on POET's price.
Marvell/Celestial AI order cancellations Marvell Semiconductor canceled all purchase orders from Celestial AI, citing unauthorized disclosures. This removed a key customer and caused a sharp stock drop. The lost orders hurt revenue expectations and investor confidence.
This is a concrete demand loss that explains recent price weakness.
AI data center optical bottleneck opportunity POET's optical interposer technology addresses data movement bottlenecks in AI data centers. Investors see big upside if it scales, as AI clusters need faster, lower-power connections. This is the main growth story pushing the stock up.
This is the core positive driver behind POET's long-term appeal.
Lumilens supply agreement and $50M order POET signed a supply deal with Lumilens for an electrical-optical interposer, with an initial $50 million order that could grow to over $500 million in five years. This validates its tech and adds a new revenue stream.
This is a new commercial win that supports the bullish case.

Latest19 Jun – 2 Jul 2026

▲2▼2

POET's AI optical tech draws buyers, but legal and order-cancellation risks weigh

Class action lawsuits over tax status and confidentiality Multiple law firms filed a securities class action against POET, alleging it hid its likely passive foreign investment company tax status and that an executive broke a confidentiality agreement. This legal cloud can scare investors and pressure the stock down.
This is a major new legal risk that directly weighs on POET's price.
Marvell/Celestial AI order cancellations Marvell Semiconductor canceled all purchase orders from Celestial AI, citing unauthorized disclosures. This removed a key customer and caused a sharp stock drop. The lost orders hurt revenue expectations and investor confidence.
This is a concrete demand loss that explains recent price weakness.
AI data center optical bottleneck opportunity POET's optical interposer technology addresses data movement bottlenecks in AI data centers. Investors see big upside if it scales, as AI clusters need faster, lower-power connections. This is the main growth story pushing the stock up.
This is the core positive driver behind POET's long-term appeal.
Lumilens supply agreement and $50M order POET signed a supply deal with Lumilens for an electrical-optical interposer, with an initial $50 million order that could grow to over $500 million in five years. This validates its tech and adds a new revenue stream.
This is a new commercial win that supports the bullish case.

GigaDevice Semiconductor(Beiji (603986.CG)

Q3 20269 Jul – 31 Jul 2026

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GigaDevice surged on profit jump, then slid on memory selloff

Profit surge and strategic stakes GigaDevice forecast a first-half profit jump of over 1,000%, driven by memory-chip shortages, its stake in CXMT's Shanghai IPO, and China's carbon-peak plan boosting chip demand.
This was the main positive catalyst that initially drove the stock higher.
Memory selloff and overcapacity fears The stock then slid amid a global memory selloff and overcapacity fears, with GigaDevice dropping 10% in a broad tech rout, highlighting its exposure to volatile sector sentiment.
This was the key negative force that reversed the early gains.
Chairman buyback and stake increase Sentiment later improved as Chairman Zhu Yiming proposed a 1–2 billion yuan buyback for cancellation and increased his stake, signaling insider confidence.
This insider action helped stabilize and lift the stock after the selloff.
DRAM expansion and LPDDR4 production The company expanded DRAM investment and prepared LPDDR4 mass production, supporting its long-term growth prospects in the memory market.
This fundamental development underpins future revenue potential.

July 20269 Jul – 31 Jul 2026

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GigaDevice surged on profit jump, then slid on memory selloff

Profit surge and strategic stakes GigaDevice forecast a first-half profit jump of over 1,000%, driven by memory-chip shortages, its stake in CXMT's Shanghai IPO, and China's carbon-peak plan boosting chip demand.
This was the main positive catalyst that initially drove the stock higher.
Memory selloff and overcapacity fears The stock then slid amid a global memory selloff and overcapacity fears, with GigaDevice dropping 10% in a broad tech rout, highlighting its exposure to volatile sector sentiment.
This was the key negative force that reversed the early gains.
Chairman buyback and stake increase Sentiment later improved as Chairman Zhu Yiming proposed a 1–2 billion yuan buyback for cancellation and increased his stake, signaling insider confidence.
This insider action helped stabilize and lift the stock after the selloff.
DRAM expansion and LPDDR4 production The company expanded DRAM investment and prepared LPDDR4 mass production, supporting its long-term growth prospects in the memory market.
This fundamental development underpins future revenue potential.

Latest16 Jul – 31 Jul 2026

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GigaDevice slides on memory selloff, then chairman's buyback and DRAM plans lift it

Memory-stock selloff drags GigaDevice down A global memory selloff hit the sector: Demingli fell limit-down twice and US memory names dropped over 8%, with GigaDevice among leading decliners. Worries that memory price rises are slowing and that chip supply may outrun demand pushed the stock down.
Explains the main downward force on the stock this period.
Overcapacity fears spark broad chip selloff Chinese stocks hit a one-week low as investors worried about semiconductor overcapacity and huge AI spending. The STAR 50 fell 6.3% and GigaDevice dropped 10% in the broad tech selloff, showing how sector-wide sentiment, not company news, can move the stock.
Shows a second, market-wide negative driver hitting the shares.
Chairman's buyback and stake increase signal confidence Chairman Zhu Yiming proposed buying back 1-2 billion yuan of shares for cancellation and raising his stake by at least 1 billion yuan, while pledging no sales for 12 months. Cancelling shares lifts earnings per share and signals insiders see the stock as cheap.
This is the biggest new positive catalyst for the stock.
DRAM expansion and new LPDDR4 product near mass production GigaDevice is injecting 500 million yuan into its Zhuhai subsidiary for a DRAM project, and says niche DRAM prices keep rising on shortages, with its own LPDDR4 chip about to enter mass production and LPDDR5 in development. That points to future sales growth.
Shows the company's own growth pipeline beyond the buyback.

9 Jul – 9 Jul 2026

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GigaDevice profit surge and CXMT IPO lift chip shares

First-half profit to jump over 1,000% on memory chip shortage GigaDevice expects first-half net profit of about 6.9 billion yuan, up roughly 1,099% from a year earlier, as tight memory chip supply lifted both sales volumes and prices, with microcontroller shipments also growing. This is the core reason the stock hit its daily limit up.
The profit forecast is the main fundamental force behind the move and is new this period.
CXMT Shanghai IPO bookbuilding boosts GigaDevice as shareholder Bookbuilding began for ChangXin Memory Technologies' Shanghai listing, and GigaDevice, as a CXMT shareholder, jumped 10% as part of a broad semiconductor rally. The stake gives GigaDevice a direct link to China's memory-chip expansion.
This is a separate, new catalyst driving the stock beyond its own earnings.
Carbon-peak plan targets energy storage and EVs, lifting chip demand The State Council's 15th Five-Year Carbon Peaking Action Plan sets 2030 goals for energy storage and new energy vehicles, which should raise demand for the memory and microcontroller chips GigaDevice sells into those sectors.
A new policy driver that supports future demand for GigaDevice's products.
Profit surge partly from investment gains, not only chip sales Part of the profit jump came from fair value gains on securities investments, which are less predictable than chip sales. The memory shortage driving prices and volumes is the durable force, but the investment gains add a one-off element investors should weigh.
Gives the fair counterweight that not all of the profit surge is from core operations.