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TrustFinance Global Insights
Mei 13, 2026
2 min read
129

Nidec Corp (TYO:6594) shares experienced a significant drop of as much as 18% after the company confirmed it had discovered suspected improper conduct related to its quality inspection processes. The motor manufacturer is now considering the establishment of an investigation committee to address the matter.
The company's stock fell to 2,329.0 yen in stark contrast to mild gains in the broader Nikkei 225 index. In an official statement, Nidec acknowledged it identified improper conduct in some products. This includes changes to materials, processes, and designs executed without obtaining customer approval. However, the company clarified that it has not yet found any issues that would immediately compromise product functionality or safety.
This development adds a new layer of concern for Nidec, which is already managing the fallout from widespread improper accounting practices. The company recently flagged a 160.7 billion yen, or $1.01 billion, negative impact to its net profit from accounting revisions spanning 2020 to 2025. The new quality control allegations, first reported by Nikkei Asia, shift scrutiny from financial reporting to the company's core manufacturing operations.
The confirmation of quality control misconduct compounds Nidec's existing challenges, raising fundamental questions about its corporate governance and operational integrity. Investors will be closely watching the findings of the potential investigation committee and any subsequent actions taken by the company to restore confidence.
Q: What did Nidec Corp admit to?
A: Nidec confirmed suspected improper conduct in its quality inspection, including unauthorized changes to materials, processes, and designs for some of its products.
Q: How did the market react to the Nidec news?
A: Nidec's shares fell sharply, dropping by as much as 18% following the announcement, significantly underperforming the Japanese market.
Source: Investing.com

TrustFinance Global Insights
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