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Nidec vs Siemens Aktiengesellschaft: why the prices moved differently

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

Nidec Corporation (6594.JP)

Q3 2026
▼3▲1

Nidec hit by accounting crisis, fraud loss, and delisting risk

  • Accounting fraud and governance crisis Nidec delayed filings, found 844 quality misconduct cases, and disclosed a ¥632 billion fraud loss and ¥1 trillion impairment. Shares fell up to 20% as delisting risk rose.

    This was the dominant force driving the stock down during the quarter.

  • Leadership and auditor turmoil The president resigned, PwC issued a second auditor disclaimer, and R&I downgraded Nidec. FY2027 guidance missed consensus by 23%, deepening uncertainty.

    These events compounded the governance crisis and weighed on the stock.

  • Shareholder lawsuit against founder An individual shareholder sued founder Nagamori for ¥28.7 billion, adding legal pressure and raising questions about accountability at the top.

    This legal action was a new negative development during the quarter.

  • Restructuring and activist interest Nidec agreed to sell its electronic components unit to Carlyle for over ¥100 billion, while activist Oasis pushed for a privatization review. Humanoid-robot supply-chain optimism briefly lifted motor makers.

    These were the few positive forces that provided some support amid the crisis.

September 2026
▼2▲1

Nidec's accounting fraud and record losses crush shares; asset sales begin

  • Massive fraud loss and impairment Nidec disclosed a ¥632 billion fraud loss and a ¥1 trillion impairment, leading to a ¥496 billion pretax loss. Shares fell as much as 20% to a year-to-date low as investors reacted to the scale of the accounting scandal.

    This is the core new financial shock that drove the stock down sharply.

  • Leadership shakeup and weak guidance The president resigned, and FY2027 guidance came in 23% below consensus. PwC Japan issued a second consecutive auditor disclaimer, triggering delisting risk. R&I downgraded Nidec to A+ on watch.

    These events compounded uncertainty and signaled deeper governance problems.

  • Activist Oasis pushes for privatization review Activist investor Oasis, holding 7.97%, pushed for a privatization review and asset sales. This could unlock value but also highlights uncertainty about Nidec's future strategy and governance.

    Activist involvement is a new development that could reshape the company but adds uncertainty.

  • First major divestiture to Carlyle Nidec agreed to sell its electronic components unit to Carlyle for over ¥100 billion, its first major divestiture. This signals a streamlining turnaround and helps raise cash amid financial pressure.

    This is a new strategic move that could improve liquidity and focus.

Latest
▼2▲1

Nidec's crisis deepens: auditor disclaimer, downgrade, activist pushes privatization

  • Auditor refuses to sign off, delisting risk grows PwC Japan again gave no audit opinion on Nidec's financials, and the new president says he will fix remaining issues by October. Without a clean audit, the Tokyo exchange could delist the stock, which is why investors keep selling.

    The unresolved audit opinion is the core reason Nidec's shares remain under pressure and delisting risk persists.

  • Credit downgrade and weak earnings confirm damage R&I cut Nidec's rating to A+ and put it on watch for another downgrade after a ¥632 billion write-down and a ¥565 billion net loss. Quarterly profit also fell sharply, showing the accounting mess has hurt real earnings, not just paperwork.

    The downgrade and weak profit numbers show the financial damage is real and ongoing, a key negative for the stock.

  • Activist Oasis pushes for privatization review Oasis, now holding 7.97%, wants outside directors to study going private and has urged asset sales. This could unlock value if it forces change, but it also highlights delisting risk and uncertainty, so the effect on the share price is mixed.

    Oasis's privatization push is a major new force that could either lift the stock through a buyout or deepen uncertainty.

  • First major asset sale aims to streamline turnaround Nidec confirmed it is selling its electronic components unit to Carlyle for over ¥100 billion, its first big divestiture. The move signals a shift away from the founder's deal-driven expansion and could speed up the turnaround, though it also reflects pressure to raise cash.

    The Carlyle sale is a concrete step that could help Nidec recover and is a new positive catalyst for the stock.

▼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 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.

▼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 2026
▲2▼2

Siemens hits record profit on AI demand but shares fall on guidance concerns

  • Record profit and raised guidance Siemens reported record quarterly profit of €3.52bn, up 25%, and raised its full-year guidance. Orders rose 13% to €27.9bn, driven by AI data-center demand. This strong financial performance reflects robust demand for Siemens' industrial technology and automation solutions.

    This point highlights the core positive financial results that drove the quarter.

  • AI partnerships and investments Siemens expanded its partnership with NVIDIA, joined an NVIDIA-led AI-factory power architecture, won contracts from FuelCell Energy and the U.S. Army, and invested over €1bn in industrial AI. It also debuted industrial AI agents in China and was named a key DCIM market player.

    This point shows strategic moves to strengthen Siemens' AI capabilities and market position.

  • Cybersecurity risks CloudSEK flagged Siemens among 2,500+ organizations potentially exposed via a compromised AI component, and U.S. agencies warned of hackers targeting Siemens industrial controls. These cybersecurity concerns could pose risks to Siemens' reputation and operations.

    This point highlights emerging risks that could negatively impact investor sentiment.

  • Share price decline despite higher net income Shares fell 4.4% despite higher net income, signaling investor disappointment over guidance or outlook. This disconnect suggests that the market may have expected even stronger performance or clearer future guidance.

    This point explains the negative price movement despite positive financial results.

August 2026
▲3▼1

Siemens hits record Q3 profit, raises guidance on AI data-center demand

  • Record Q3 profit and raised guidance Siemens reported record quarterly profit of €3.52bn, up 25%, and raised its full-year guidance. Orders jumped 13% to €27.9bn, driven by AI data-center demand. This shows the core business is growing strongly and management expects more ahead.

    This is the central new financial result that drove the stock and sets the tone for the period.

  • Deepened NVIDIA partnership and AI investments Siemens deepened its partnership with NVIDIA, launched an AI shipbuilding platform, and announced over €1bn in industrial AI investment. These moves expand its role in AI infrastructure and industrial software, opening new sales channels.

    This is a major new strategic push that supports future growth and competitive positioning.

  • New orders and software deals Siemens won an $80m U.S. Army contract and expanded software reach through Salesforce AI agents and digital-twin deals. Energy efficiency is now the top building priority, boosting demand for its offerings.

    These are concrete new wins that add revenue and show broadening demand across sectors.

  • Cybersecurity risks and share price drop CloudSEK flagged Siemens among 2,500+ organizations potentially exposed via a compromised AI component, and U.S. agencies warned of hackers targeting Siemens industrial controls. Shares fell 4.4% despite higher net income, signaling investor disappointment over guidance or outlook.

    This is the main counterweight: security concerns and a negative market reaction despite strong results.

Latest
▲3▼1

Siemens bets big on AI and automation as demand for efficiency grows

  • Siemens to invest over €1 billion in industrial AI Siemens will invest more than €1 billion in industrial AI over three years, developing an Industrial Foundation Model with Nvidia that could cut engineering cycles by up to 40%. This positions Siemens at the center of factory automation and digitalization, supporting future revenue growth and a higher valuation.

    This is the largest new strategic commitment and directly drives the investment case for Siemens' technology leadership.

  • Energy efficiency becomes top building priority, boosting Siemens demand Siemens' own survey shows energy efficiency jumped from seventh to first place as a building priority, with over half of organizations planning higher investment in efficiency, smart buildings, and electrification. This creates a strong demand tailwind for Siemens' building and infrastructure offerings.

    It highlights a structural demand shift that benefits Siemens' smart infrastructure business, a key profit driver.

  • Siemens expands AI sales tools and digital twin deals Siemens is rolling out Salesforce AI agents across 132 countries to handle leads and connect engineering data, and signed a digital twin agreement with Rock Tech Lithium in Canada. These moves show Siemens using AI to boost productivity and win industrial digitalization projects.

    These deals demonstrate real-world adoption of Siemens' digital offerings, supporting revenue and efficiency gains.

  • US hacker warning and weak market reaction to earnings US agencies warned of hackers targeting Siemens industrial controls, though Siemens says no new attacks or vulnerabilities were found. Also, Siemens shares fell 4.4% despite higher quarterly net income, suggesting investors were disappointed by guidance or outlook. These create uncertainty and near-term pressure.

    These are the main negative developments that could weigh on sentiment and highlight risks.

▲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 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.

▲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.