Nidec vs Sungrow Power Supply: 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

▼3▲1

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

▼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.

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.

Sungrow Power Supply Co Ltd (300274.CS)

Q3 202628 Jun – 31 Aug 2026

▲2▼2

Sungrow hit by US/EU bans, but AI data-center pivot advances

US and EU regulatory crackdowns US and EU regulators banned Chinese inverters over grid-security concerns, with the US FCC ban affecting 15–20% of revenue and a Trump executive order targeting foreign battery storage, causing sharp share declines.
This was the main negative force driving the stock down during the quarter.
Weak first-half financials First-half revenue fell 29% and net profit dropped 32%, confirming weak demand and adding to investor concerns.
The poor financial results reinforced the negative sentiment from regulatory pressures.
AI data-center pivot gains traction Sungrow advanced its AI data-center pivot, launching solid-state transformers and securing 130 MW framework deals, with roughly 2 GWh of AIDC orders and a 10+ GWh pipeline.
This new business direction provided a positive offset to the regulatory headwinds.
New orders and shareholder returns Sungrow won a major Chile battery storage contract (152MW/606MWh), invested in storage and EVB ventures, proposed a 500 million–1 billion yuan buyback, and landed a 229 MW Thailand order.
These developments showed continued business wins and efforts to support the stock price.

August 202617 Aug – 31 Aug 2026

▲2▼2

US ban and profit slump hit Sungrow, but storage orders boom

Trump executive order threatens US battery storage sales On August 26, Trump signed an executive order banning US procurement or installation of certain foreign power equipment, including battery storage. Sungrow's shares fell as much as 14% as investors feared lost US business. The company is still reviewing the impact, and this is the second US policy shock this year.
This is the biggest new negative force on the stock, directly hitting a key market and causing a sharp sell-off.
First-half profit falls 32% on lower revenue Sungrow reported first-half revenue down 29% and net profit down 32% from a year earlier, mainly because of smaller revenue scale. Gross margin improved slightly, and second-quarter profit rose 29% from the first quarter. The profit drop confirms weak overall demand, weighing on the stock.
The earnings miss is a core new fundamental negative that explains why the stock is under pressure beyond US policy.
Chile battery storage order adds overseas demand Sungrow won a contract to supply a 152MW/606MWh battery storage system and solar inverters for Chile's Observatorio project, with a 25-year service agreement. This large order shows demand outside the US and helps offset lost American business, supporting future revenue.
It is a concrete new overseas win that counters the negative US news and shows the company can grow elsewhere.
AIDC energy storage orders and pipeline signal strong growth Sungrow said it expects very high growth in AIDC-related business over the next two years, with about 2 GWh of orders in hand and over a dozen GWh in pipeline. It also delivered solid-state transformers for data centers, potentially a first. This points to a new demand driver beyond solar.
It reveals a fresh growth area that could replace lost US solar business and lift future profits.

Latest17 Aug – 31 Aug 2026

▲2▼2

US ban and profit slump hit Sungrow, but storage orders boom

Trump executive order threatens US battery storage sales On August 26, Trump signed an executive order banning US procurement or installation of certain foreign power equipment, including battery storage. Sungrow's shares fell as much as 14% as investors feared lost US business. The company is still reviewing the impact, and this is the second US policy shock this year.
This is the biggest new negative force on the stock, directly hitting a key market and causing a sharp sell-off.
First-half profit falls 32% on lower revenue Sungrow reported first-half revenue down 29% and net profit down 32% from a year earlier, mainly because of smaller revenue scale. Gross margin improved slightly, and second-quarter profit rose 29% from the first quarter. The profit drop confirms weak overall demand, weighing on the stock.
The earnings miss is a core new fundamental negative that explains why the stock is under pressure beyond US policy.
Chile battery storage order adds overseas demand Sungrow won a contract to supply a 152MW/606MWh battery storage system and solar inverters for Chile's Observatorio project, with a 25-year service agreement. This large order shows demand outside the US and helps offset lost American business, supporting future revenue.
It is a concrete new overseas win that counters the negative US news and shows the company can grow elsewhere.
AIDC energy storage orders and pipeline signal strong growth Sungrow said it expects very high growth in AIDC-related business over the next two years, with about 2 GWh of orders in hand and over a dozen GWh in pipeline. It also delivered solid-state transformers for data centers, potentially a first. This points to a new demand driver beyond solar.
It reveals a fresh growth area that could replace lost US solar business and lift future profits.

July 202628 Jun – 3 Aug 2026

▲2▼2

US inverter ban hits Sungrow; AI data-center pivot offers counterweight

US ban on Chinese inverters The US FCC banned imports of Chinese internet-connected inverters over grid-security concerns. Since the US is 15–20% of revenue, shares fell nearly 20% on draft news and about 5% on the final ban.
This was the biggest new negative force on the stock during the period.
EU restricts Chinese inverters The EU also moved to restrict Chinese-made inverters over grid-security concerns. Management said the impact would be limited, but the news added to regulatory worries.
It shows the regulatory pressure was not just a US issue, broadening the risk.
AI data-center pivot Sungrow launched EnerNeo solid-state transformers and signed 130 MW framework deals, with large-scale sales expected by 2028. Data centers were flagged as solar's fastest-growing demand driver.
This is a new growth avenue that could offset regulatory setbacks.
Buyback and investments Sungrow proposed a 500 million–1 billion yuan buyback to support the stock, invested in Sunwoda EVB and an energy-storage fund, and won a 229 MW Thailand inverter order.
These actions show management confidence and new business wins, providing a positive counterweight.

26 Jul – 3 Aug 2026

▲3▼1

US inverter ban hits Sungrow; buyback and new deals offset

US bans Chinese inverters, stock falls The US FCC banned imports of Chinese internet-connected inverters, directly hitting Sungrow's US sales. The stock fell nearly 5% on the news. This is a real threat because the US is a key market, though Sungrow says its products comply and local US production is years away.
This is the biggest new negative event and directly explains the stock's recent drop.
Buyback plan supports share price Sungrow plans to repurchase 500 million to 1 billion yuan of its own shares. Buybacks reduce the number of shares and signal management thinks the stock is undervalued, which can put a floor under the price after the US ban sell-off.
This is a new capital action that directly counters the negative US news.
New investments expand downstream reach Sungrow invested 655 million yuan in Sunwoda EVB and committed 199 million yuan to a 1 billion yuan energy storage fund. These moves build ties with customers and projects, supporting future demand for Sungrow's inverters and storage systems.
Shows Sungrow is actively growing its business despite US restrictions.
Thailand solar deal adds demand Sungrow signed an agreement to supply inverters for Thailand's 229 MW Solar Big Lot project, with first phase starting early 2027. This is a concrete overseas order that helps offset lost US business and shows demand outside America.
A new international order that diversifies away from the US market.

28 Jun – 24 Jul 2026

▲3▼1

Sungrow's AI data-center pivot and buyback offset US/EU inverter restrictions

US and EU plan to restrict Chinese solar inverters The US and EU are drafting rules to limit Chinese-made inverters over grid security concerns. Sungrow gets 15–20% of revenue from the US, so its shares fell nearly 20% intraday on the news. The rules are still in draft form, and Sungrow says the EU funding limits have limited impact.
This is the biggest near-term risk to Sungrow's revenue and explains the sharp stock drop.
New solid-state transformers and 130 MW AI data-center deals Sungrow launched its EnerNeo solid-state transformers and signed 130 MW framework deals with two data-center firms. It is also talking to North American cloud providers. This opens a new AI-driven market, with large-scale sales expected by 2028, giving the stock a fresh growth story beyond solar.
This is a new product and revenue stream that directly ties Sungrow to the fast-growing AI data-center power market.
Chairman proposes 500 million–1 billion yuan share buyback Sungrow's chairman proposed a buyback of 500 million to 1 billion yuan. Buybacks reduce the number of shares outstanding and signal that management thinks the stock is undervalued, which can support the share price and boost investor confidence.
This is a concrete capital action that can put a floor under the stock after the regulatory sell-off.
AI data centers seen as fastest-growing solar demand driver At an industry workshop, Sungrow's vice president said data-center electricity demand will be the fastest-growing market for solar over the next five years. This supports demand for Sungrow's solar and storage products, even as overall Chinese solar installations are falling sharply.
It shows a new demand source that can offset the slowdown in traditional solar installations.