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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 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.

Sungrow Power Supply Co Ltd (300274.CS)

Q3 2026
▲2▼2

Sungrow hit by US/EU inverter bans, but AI pivot and buyback offer support

  • US and EU regulatory bans on Chinese inverters The US FCC banned Chinese internet-connected inverters, and the EU moved to restrict them, threatening a key market that provides 15–20% of revenue and causing sharp share declines.

    This is the main new negative force that pressured the stock during the quarter.

  • US executive order bans foreign battery storage procurement A US executive order banning foreign battery storage procurement added further pain, while weak H1 results—revenue down 29% and profit down 32%—highlighted core-business struggles.

    This new policy and weak financials compounded the negative sentiment.

  • AI data-center pivot gains traction Sungrow advanced its AI data-center pivot with EnerNeo solid-state transformers, 130 MW framework deals, roughly 2 GWh of AIDC orders, and a 152MW/606MWh Chile storage contract.

    This shows a new growth avenue that could offset core-business weakness.

  • Price hikes, Thailand orders, and buyback proposal It raised inverter and storage prices 5–15%, won Thailand orders, confirmed US sales unaffected by FCC rules, and proposed a 500 million–1 billion yuan buyback.

    These actions provide near-term support and signal confidence amid regulatory challenges.

August 2026
▲2▼2

US battery ban and weak H1 results hit Sungrow, but storage wins and price hikes offset

  • US battery storage procurement ban Trump's executive order banning US procurement of certain foreign battery storage equipment caused a 14% share drop, adding to existing US regulatory pressures.

    This was a major new US policy shock that directly hit the stock.

  • Weak first-half financials First-half revenue fell 29% and profit 32% year-on-year due to weak demand, showing the company's core business struggled in the period.

    These results revealed fundamental demand weakness that weighed on investor sentiment.

  • Chile storage contract and AIDC orders Sungrow signed a 152MW/606MWh Chile storage contract with a 25-year service agreement and secured roughly 2 GWh of AIDC orders with over 10 GWh in pipeline.

    These new orders demonstrate growth in energy storage and data-center demand, offsetting some weakness.

  • Price hikes and buyback Sungrow raised inverter and storage prices by 5–15%, won a ~100MW Thailand inverter deal, confirmed US sales unaffected by FCC rules, and proposed a 500 million–1 billion yuan buyback.

    These actions support margins and shareholder value, providing a counterweight to negative news.

Latest
▲4

Sungrow raises prices, wins orders, and buys back stock

  • Sungrow raises product prices 5–15% Sungrow will raise prices for solar inverters, energy storage converters, and storage systems by 5–15% from September 20, citing higher copper, aluminum, and chip costs and a push to end cutthroat price competition. Higher prices can lift revenue and profit if customers accept them, though weak demand could limit the benefit.

    This is the biggest new price driver and directly affects Sungrow's revenue and margins.

  • New inverter supply deal in Thailand Thai Solar Energy signed an agreement with Sungrow to supply inverters for 15 solar projects totaling about 100 megawatts, with operations from 2027 to 2030. This adds to Sungrow's order book and supports future revenue, though the projects are years away from completion.

    It shows new demand for Sungrow's core products and supports the growth story.

  • US sales unaffected by FCC certification rule Sungrow said the FCC policy mainly restricts new product certifications, not sales of already-certified products, so its US inverter and storage sales are not impacted. This removes a regulatory worry that could have hurt its US business.

    It clarifies a regulatory risk that investors were concerned about, supporting the stock.

  • Buyback program supports shareholder returns Sungrow's chairman proposed a buyback of 500 million to 1 billion yuan, and the company has already repurchased 325 million yuan worth of shares for employee ownership or incentives. Buybacks can support the stock price and signal confidence, though they are a gradual, ongoing program.

    It shows capital being returned to shareholders and management confidence, a positive for the stock.

▲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 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.

▲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.

▲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.