Nidec Shares Plunge as CEO Exit, Accounting Charges and Delisting Risk Deepen Crisis

Nidec shares suffered their sharpest declines as an accounting scandal widened, Mitsuya Kishida left the chief executive role, and investors confronted the prospect of much larger charges. The stock fell as much as 22.44% in Tokyo during the initial probe, while later disclosures and reports drove additional drops of roughly 17% to 20%.

The immediate trigger was an investigation into suspected accounting irregularities at a Chinese subsidiary, but the market reaction reflects a broader breakdown in confidence. The company’s delayed financial reporting, auditor scrutiny and warnings about impairment charges have turned a regional accounting issue into a governance and balance-sheet crisis.

Nidec’s investigation began with allegations tied to accounting practices at a Chinese unit and expanded into a review of group companies and past financial results. The company warned in March that it might record about ¥250 billion, or $1.6 billion, in impairment charges and said additional adjustments could affect earlier periods.

Later reports put the possible burden at roughly ¥1 trillion, or about $6.4 billion, while Morningstar described a loss linked to a $4 billion impairment. The figures differ because the accounting review developed over time and reflected different estimates or reporting stages. The common thread is a material hit to assets, earnings and the credibility of previously published accounts.

Kishida’s departure after fewer than 3 years as CEO made the leadership consequences impossible to separate from the accounting investigation. His exit followed mounting pressure over the company’s financial disclosures and internal controls, while Nidec founder Shigenobu Nagamori’s long influence has kept attention on the company’s management culture.

Commentary on the scandal has focused on aggressive targets, pressure from senior leaders and a management structure built around strong personalities. Those conditions, Japan Forward wrote, can encourage routine misconduct when employees are pushed to meet numbers that operating results don't support. The leadership change therefore addresses accountability, but it also leaves investors asking whether governance reforms will reach the systems that produced the problem.

Nidec now faces pressure from both its auditor and the Tokyo Stock Exchange. The auditor withheld an opinion on the company’s long-awaited full-year results, a step that signals unresolved concerns over the reliability of the accounts. The exchange separately placed Nidec on special alert and warned that failure to improve could lead to delisting.

A benchmark-index expulsion added another mechanical source of selling, as funds tracking the index must adjust their holdings. Delisting risk also raises the cost of capital and complicates relationships with customers, lenders and suppliers. The company must complete its investigation, publish dependable financial statements and demonstrate control improvements while its market standing is already weakened.

Nidec is a major manufacturer of precision motors and electronic components, with operations spanning automotive, industrial and consumer applications. A prolonged accounting crisis threatens more than its share price because customers depend on the company for components, suppliers depend on its orders, and lenders depend on credible financial information.

The possibility of a breakup or takeover has entered the discussion as the company’s valuation and governance problems intensify. A forced restructuring could separate stronger businesses from troubled assets, while a takeover would test whether buyers can manage the accounting liabilities and restore trust. Competitors in motors and electronic components gain room to pursue customers, employees and acquisition targets as Nidec spends management time on remediation.

The next decisive steps are publication of audited results, clarification of the final impairment total and disclosure of responsibility for the irregularities. Investors will also look for the replacement CEO, the investigation’s conclusions and concrete changes to internal controls, board oversight and reporting procedures.

The company’s recovery depends on whether it can turn a leadership change into a credible governance reset. Special-alert status, possible delisting, index removal and unresolved financial statements keep the crisis active even after the initial share-price shock. Until those issues are addressed, Nidec’s operational scale will compete with a more basic question: whether the market can trust its numbers again.