Nidec vs Siemens Aktiengesellschaft: why the prices moved differently

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

Nidec Corporation (6594.JP)

Q3 202629 Jun – 1 Oct 2026

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Nidec hit by accounting crisis, delisting risk; robot demand offers brief lift

Humanoid robot supply-chain optimism Nidec shares briefly rallied on hopes that demand from humanoid robot makers would boost sales, as Nidec supplies many robot companies. But the lift was speculative and faded with AI-related valuations.
This was the only positive force during the quarter, though temporary.
Accounting and governance crisis Nidec delayed its annual securities report, missed its April–June earnings deadline, and disclosed 844 quality misconduct cases, including 60 serious ones. An external panel blamed weak controls and short-term target pressure.
This was the core negative event that dominated the quarter and damaged investor trust.
Shareholder lawsuit and leadership turmoil A shareholder derivative suit seeks ¥28.7 billion from founder Shigenobu Nagamori and former directors. Later, Nidec confirmed the president’s resignation, adding to leadership uncertainty.
These events deepened the governance crisis and raised concerns about management stability.
Massive impairment, loss, and delisting risk Nidec confirmed a possible ¥1 trillion impairment, a ¥496 billion pretax loss, weak FY2027 guidance, and a second auditor disclaimer from PwC Japan. Delisting risk intensified, and shares fell sharply.
These financial and regulatory blows directly caused the stock’s sharp decline and heightened delisting fears.

September 202628 Sep – 1 Oct 2026

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Nidec's ¥632B fraud loss, auditor disclaimer, and delisting risk crush shares

¥1 trillion impairment and president's dismissal confirmed Nidec admitted it is considering a massive write-down of about ¥1 trillion and executive changes, including removing its president. A write-down that size would erase roughly a decade of profits, so investors sold the stock hard, with shares falling as much as 18%.
This is the first concrete confirmation of the scale of the financial damage and the leadership shake-up, directly driving the sell-off.
President resigns; EV business impairment balloons President Kishida resigned immediately, and the EV-related impairment is now expected to far exceed the earlier ¥250 billion estimate. A sudden leadership exit and a much larger loss than guided add uncertainty and weigh on the shares.
The resignation and the ballooning EV loss are new events that increase uncertainty and confirm deeper problems than previously disclosed.
FY2026 pretax loss of ¥496 billion; weak FY2027 guidance Nidec reported a ¥496 billion pretax loss for the year ended March 2026, far worse than analysts expected, and guided next year's profit 23% below consensus. The huge loss and weak outlook show the damage is not contained and future earnings will suffer.
The actual loss and disappointing guidance quantify the financial hit and signal a slow recovery, pushing the stock down.
Auditor disclaimer and delisting risk hit year-to-date low PwC Japan refused to give an opinion on Nidec's financial statements for a second straight year, saying it lacked enough evidence. With the Tokyo Stock Exchange reviewing whether to delist the company, shares fell nearly 20% to a year-to-date low as investors fear the stock could be removed from the exchange.
The auditor's disclaimer and the imminent delisting review are the most severe regulatory threats, directly causing the stock's plunge to a new low.

Latest28 Sep – 1 Oct 2026

▼4

Nidec's ¥632B fraud loss, auditor disclaimer, and delisting risk crush shares

¥1 trillion impairment and president's dismissal confirmed Nidec admitted it is considering a massive write-down of about ¥1 trillion and executive changes, including removing its president. A write-down that size would erase roughly a decade of profits, so investors sold the stock hard, with shares falling as much as 18%.
This is the first concrete confirmation of the scale of the financial damage and the leadership shake-up, directly driving the sell-off.
President resigns; EV business impairment balloons President Kishida resigned immediately, and the EV-related impairment is now expected to far exceed the earlier ¥250 billion estimate. A sudden leadership exit and a much larger loss than guided add uncertainty and weigh on the shares.
The resignation and the ballooning EV loss are new events that increase uncertainty and confirm deeper problems than previously disclosed.
FY2026 pretax loss of ¥496 billion; weak FY2027 guidance Nidec reported a ¥496 billion pretax loss for the year ended March 2026, far worse than analysts expected, and guided next year's profit 23% below consensus. The huge loss and weak outlook show the damage is not contained and future earnings will suffer.
The actual loss and disappointing guidance quantify the financial hit and signal a slow recovery, pushing the stock down.
Auditor disclaimer and delisting risk hit year-to-date low PwC Japan refused to give an opinion on Nidec's financial statements for a second straight year, saying it lacked enough evidence. With the Tokyo Stock Exchange reviewing whether to delist the company, shares fell nearly 20% to a year-to-date low as investors fear the stock could be removed from the exchange.
The auditor's disclaimer and the imminent delisting review are the most severe regulatory threats, directly causing the stock's plunge to a new low.

August 202629 Jun – 10 Sep 2026

▼4▲1

Nidec's governance crisis deepens: delayed filings, 844 quality cases, derivative suit

Annual report filing delayed to September 30 Nidec asked regulators to push its annual securities report deadline from June 30 to September 30 because investigations into past financial statements, product quality and unpaid customs duties are taking too long. A delayed report signals serious compliance problems and keeps investors in the dark about the company's true finances.
This is the first sign this period that governance problems are delaying required disclosures, a core negative force on the stock.
Humanoid robot supply-chain optimism lifts motor makers Component suppliers like Nidec rallied as investors bet on faster humanoid robot production, since these suppliers sell to many robot makers at once. But the same report warned AI-related valuations may be overextended, so this lift is speculative and could fade.
It is the only positive price driver this period and shows a real demand-side counterweight to the governance news.
April–June earnings release missed Nidec failed to publish its April–June 2026 results within the Tokyo Stock Exchange's 45-day limit because it is still investigating accounting irregularities and quality misconduct. Missing a required deadline adds to the picture of a company whose basic reporting cannot be trusted, weighing on the shares.
It shows the governance problems are now disrupting routine financial reporting, not just past statements.
844 quality misconduct cases and delisting risk An external panel found 844 cases of quality misconduct, including 60 serious ones, blaming pressure for short-term targets and weak quality controls. Nidec is already a special attention stock and could be delisted if it fails to fix internal management within one year, a direct threat to shareholders.
This is the biggest new negative: confirmed widespread misconduct plus an explicit delisting risk that directly threatens the investment.
Derivative suit seeks 28.7 billion yen from founder An individual shareholder sued founder Shigenobu Nagamori and two former directors for about 28.7 billion yen, alleging illegal buybacks and dividends beyond the legal limit. It is the first such suit since the accounting fraud surfaced, raising the risk of more legal claims and further management distraction.
It is a new legal front that could cost the company and its former leaders money and keep governance concerns in the headlines.

29 Jun – 10 Sep 2026

▼4▲1

Nidec's governance crisis deepens: delayed filings, 844 quality cases, derivative suit

Annual report filing delayed to September 30 Nidec asked regulators to push its annual securities report deadline from June 30 to September 30 because investigations into past financial statements, product quality and unpaid customs duties are taking too long. A delayed report signals serious compliance problems and keeps investors in the dark about the company's true finances.
This is the first sign this period that governance problems are delaying required disclosures, a core negative force on the stock.
Humanoid robot supply-chain optimism lifts motor makers Component suppliers like Nidec rallied as investors bet on faster humanoid robot production, since these suppliers sell to many robot makers at once. But the same report warned AI-related valuations may be overextended, so this lift is speculative and could fade.
It is the only positive price driver this period and shows a real demand-side counterweight to the governance news.
April–June earnings release missed Nidec failed to publish its April–June 2026 results within the Tokyo Stock Exchange's 45-day limit because it is still investigating accounting irregularities and quality misconduct. Missing a required deadline adds to the picture of a company whose basic reporting cannot be trusted, weighing on the shares.
It shows the governance problems are now disrupting routine financial reporting, not just past statements.
844 quality misconduct cases and delisting risk An external panel found 844 cases of quality misconduct, including 60 serious ones, blaming pressure for short-term targets and weak quality controls. Nidec is already a special attention stock and could be delisted if it fails to fix internal management within one year, a direct threat to shareholders.
This is the biggest new negative: confirmed widespread misconduct plus an explicit delisting risk that directly threatens the investment.
Derivative suit seeks 28.7 billion yen from founder An individual shareholder sued founder Shigenobu Nagamori and two former directors for about 28.7 billion yen, alleging illegal buybacks and dividends beyond the legal limit. It is the first such suit since the accounting fraud surfaced, raising the risk of more legal claims and further management distraction.
It is a new legal front that could cost the company and its former leaders money and keep governance concerns in the headlines.

Siemens Aktiengesellschaft (SIE.XETRA)

Q3 202622 Jun – 14 Aug 2026

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Siemens hits record on AI demand, but security risk lingers

Record profit and orders on AI demand Siemens reported record industrial profit of €3.52bn, up 25%, with 7% revenue growth and record orders of €27.9bn, driven by AI-related demand for data-center equipment and software. Guidance was raised.
This is the core positive driver of the quarter, showing strong financial performance and outlook.
Expanded AI partnerships and contract wins Siemens expanded its NVIDIA partnership for AI chip design, joined an NVIDIA-led AI-factory power architecture, won an $80m U.S. Army contract, and advanced fuel-cell, DCIM, and China industrial-AI initiatives.
These strategic moves strengthen Siemens' position in AI and industrial technology, supporting future growth.
Potential exposure to compromised AI component CloudSEK flagged Siemens among 2,500+ organizations potentially affected by a compromised AI component (LiteLLM), creating headline and security-review risk, though no breach was confirmed.
This is the main counterweight to the positive momentum, introducing uncertainty and potential reputational risk.

August 202624 Jul – 14 Aug 2026

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Siemens hits record profit on AI demand, wins new orders

Record Q3 profit and raised outlook on AI demand Siemens reported record industrial profit of €3.52bn, up 25%, with revenue up 7% and orders up 13% to a record €27.9bn. AI-related demand for data-center equipment, factory and building software drove the beat, and full-year earnings guidance was raised. This directly boosts investor confidence and supports a higher share price.
This is the single biggest new fundamental event for Siemens this period, showing accelerating profit and demand.
Expanded NVIDIA partnership for AI chip design Siemens deepened its partnership with NVIDIA to deliver self-verifying AI agents for chip and PCB design, integrated into its EDA tools. Early results show over 10x faster characterization and 5–10x lower token costs. This strengthens Siemens' software moat and opens new recurring revenue from AI-driven design workflows.
It is a concrete new technology partnership that expands Siemens' high-margin software business.
New AI shipbuilding platform and $80M Army contract Siemens Digital Industries will help build an AI-powered shipyard platform with HD Korea Shipbuilding, and Siemens Government Technologies won an $80m U.S. Army contract for a digital manufacturing hub. Both deals show Siemens' industrial software and digital-twin technology winning new customers in defense and heavy industry.
These are fresh contract wins that add to Siemens' order book and demonstrate real-world demand for its digital tools.
AI supply-chain exposure flagged by CloudSEK CloudSEK named Siemens among 2,500+ organisations potentially affected by a compromised AI software component (LiteLLM), which may have exposed credentials and source code. While not proof of a breach, it creates headline risk and could force costly security reviews, weighing on sentiment until the impact is clarified.
It is the main new risk factor this period and a genuine counterweight to the positive news.

Latest24 Jul – 14 Aug 2026

▲3▼1

Siemens hits record profit on AI demand, wins new orders

Record Q3 profit and raised outlook on AI demand Siemens reported record industrial profit of €3.52bn, up 25%, with revenue up 7% and orders up 13% to a record €27.9bn. AI-related demand for data-center equipment, factory and building software drove the beat, and full-year earnings guidance was raised. This directly boosts investor confidence and supports a higher share price.
This is the single biggest new fundamental event for Siemens this period, showing accelerating profit and demand.
Expanded NVIDIA partnership for AI chip design Siemens deepened its partnership with NVIDIA to deliver self-verifying AI agents for chip and PCB design, integrated into its EDA tools. Early results show over 10x faster characterization and 5–10x lower token costs. This strengthens Siemens' software moat and opens new recurring revenue from AI-driven design workflows.
It is a concrete new technology partnership that expands Siemens' high-margin software business.
New AI shipbuilding platform and $80M Army contract Siemens Digital Industries will help build an AI-powered shipyard platform with HD Korea Shipbuilding, and Siemens Government Technologies won an $80m U.S. Army contract for a digital manufacturing hub. Both deals show Siemens' industrial software and digital-twin technology winning new customers in defense and heavy industry.
These are fresh contract wins that add to Siemens' order book and demonstrate real-world demand for its digital tools.
AI supply-chain exposure flagged by CloudSEK CloudSEK named Siemens among 2,500+ organisations potentially affected by a compromised AI software component (LiteLLM), which may have exposed credentials and source code. While not proof of a breach, it creates headline risk and could force costly security reviews, weighing on sentiment until the impact is clarified.
It is the main new risk factor this period and a genuine counterweight to the positive news.

July 202622 Jun – 10 Jul 2026

▲4

Siemens expands AI, data-center, and energy partnerships

Siemens joins Nvidia AI-factory power architecture Siemens is part of an Nvidia-led group providing electrical and power architecture for next-generation AI factories, integrating Fluence battery storage into its data-center reference design. This opens a large new sales channel for Siemens' electrical gear as AI data centers are built.
A concrete new partnership that directly drives demand for Siemens' data-center electrical solutions.
FuelCell Energy picks Siemens for power systems Siemens will design and supply electrical balance-of-plant systems for FuelCell Energy's large fuel-cell installations, targeting projects over 100 megawatts. This adds a new order stream in distributed power for energy-hungry data centers and industry.
A new commercial agreement that expands Siemens' addressable market in on-site power generation.
Siemens named key player in fast-growing DCIM market A market report projects data-center management software to grow from $3.8 billion in 2025 to $8.4 billion by 2030, with Siemens listed among major players. Rising cloud and AI data-center investment supports demand for Siemens' data-center management offerings.
Shows a growing market where Siemens is positioned to benefit, supporting its data-center growth story.
Siemens debuts industrial AI agents in China At a Beijing supply-chain expo, Siemens showcased industrial AI agents and smart decision-support systems, reinforcing its smart-manufacturing leadership in China. This supports its competitive position in a key industrial market.
A new product showcase that strengthens Siemens' technology and competitive standing in China.

22 Jun – 10 Jul 2026

▲4

Siemens expands AI, data-center, and energy partnerships

Siemens joins Nvidia AI-factory power architecture Siemens is part of an Nvidia-led group providing electrical and power architecture for next-generation AI factories, integrating Fluence battery storage into its data-center reference design. This opens a large new sales channel for Siemens' electrical gear as AI data centers are built.
A concrete new partnership that directly drives demand for Siemens' data-center electrical solutions.
FuelCell Energy picks Siemens for power systems Siemens will design and supply electrical balance-of-plant systems for FuelCell Energy's large fuel-cell installations, targeting projects over 100 megawatts. This adds a new order stream in distributed power for energy-hungry data centers and industry.
A new commercial agreement that expands Siemens' addressable market in on-site power generation.
Siemens named key player in fast-growing DCIM market A market report projects data-center management software to grow from $3.8 billion in 2025 to $8.4 billion by 2030, with Siemens listed among major players. Rising cloud and AI data-center investment supports demand for Siemens' data-center management offerings.
Shows a growing market where Siemens is positioned to benefit, supporting its data-center growth story.
Siemens debuts industrial AI agents in China At a Beijing supply-chain expo, Siemens showcased industrial AI agents and smart decision-support systems, reinforcing its smart-manufacturing leadership in China. This supports its competitive position in a key industrial market.
A new product showcase that strengthens Siemens' technology and competitive standing in China.