Summary
Nidec Corp. shares rallied on Monday following the release of a final third-party probe into improper accounting at the Japanese electric motor maker. The report quantified multiple financial hits related to accounting revisions and duties, confirmed the problems were accounting-related rather than operational, and prompted the company to adjust its improvement plans in line with the findings.
Market reaction
Shares of Nidec Corp (TYO:6594) rose sharply on the day the report was published. The stock gained as much as 7.8% to reach 2,445.0 yen, before easing back to trade at 2,407.0 yen by 00:54 ET (04:54 GMT). The move followed investor reassessment of the company’s risk profile after the release of the probe’s final findings.
Findings from the probe
The final third-party report concluded that accounting revisions covering the period from fiscal 2020 through early-2025 produced a net profit hit of 160.7 billion yen, a figure larger than an earlier estimate that cited an overall net asset drag of 139.7 billion yen. The probe also affirmed earlier conclusions that issues were confined to accounting practices and did not extend to Nidec’s manufacturing operations.
Separately, the report maintained that the effect of improper accounting on goodwill and other asset impairment stood at 250 billion yen. It also identified an additional 11.1 billion yen impact from U.S. customs duties.
Governance and causes identified
The report found that much of the improper accounting was linked to performance targets and pressure associated with Nidec’s founder and former Chairman Shigenobu Nagamori, who stepped down from the board in December. The probe’s findings are expected to inform revisions to the company’s improvement plans.
Implications for filings and listing status
With the final report now published, Nidec indicated the release reduces the risk of possible de-listing and clears a path for the company to prepare and file amended financial reports with the Tokyo Stock Exchange. The company said it will revise its improvement plans in accordance with the report’s conclusions.
Context on stock performance
Nidec shares have recovered from a slump to record lows in late-2025 and are trading up nearly 15% so far in 2026, reflecting investor confidence that the company’s manufacturing business remains intact despite the accounting scandal.
What remains uncertain
The company has committed to revising improvement plans and pursuing amended filings, but the timeline and final scope of those regulatory filings were not specified in the report. The market reaction indicates a partial relief, yet questions remain about the full operational and financial remediation process.
Note: This article presents the findings and market response as reported in the company’s final probe report and the observed stock movements on the day of publication.