Core Viewpoint - Nidec Corporation is under investigation for potential improper accounting practices, leading to significant stock price declines and investor losses [5][6][7]. Group 1: Investigation and Findings - On September 3, 2025, Nidec announced the establishment of a third-party committee to investigate suspicions of improper accounting, revealing documents suggesting management involvement in these practices [5]. - On September 26, 2025, Nidec disclosed further findings of inappropriate accounting, including undervaluation for customs purposes, and received an audit report with a disclaimer of opinion due to ongoing investigations [6]. - On October 23, 2025, Nidec withdrew its year-end forecast and decided not to pay a surplus dividend, citing ongoing investigations into suspected accounting practices [7]. Group 2: Stock Price Impact - Following the announcement on September 4, 2025, Nidec's stock price fell by $0.81, or 16.5%, closing at $4.11 per share [5]. - After the September 26 disclosure, the stock price decreased by $0.29, or 6.6%, closing at $4.09 per share [6]. - On October 23, 2025, the stock price dropped by $1.17, or 25.4%, closing at $3.43 per share [7]. - On October 27, 2025, the stock price fell by $0.80, or 20.3%, closing at $3.15 per share following a designation under a Special Security alert by the Tokyo Stock Exchange [8][9]. Group 3: Regulatory Response - The Tokyo Stock Exchange designated Nidec under a Special Security alert, indicating a need for significant improvement in the company's internal management systems and identifying deficiencies in internal controls related to accounting and financial processes [8].

Core Viewpoint - Nidec Corporation is under investigation for potential improper accounting practices, leading to significant stock price declines and investor losses [5][6][7]. Group 1: Investigation and Findings - On September 3, 2025, Nidec announced the establishment of a third-party committee to investigate suspicions of improper accounting, revealing documents suggesting management involvement in these practices [5]. - On September 26, 2025, Nidec disclosed further findings of inappropriate accounting, including undervaluation for customs purposes, and received an audit report with a disclaimer of opinion due to ongoing investigations [6]. - On October 23, 2025, Nidec withdrew its year-end forecast and decided not to pay a surplus dividend, citing ongoing investigations into suspected inappropriate accounting practices [7]. Group 2: Stock Price Impact - Following the announcement on September 4, 2025, Nidec's stock price fell by $0.81, or 16.5%, closing at $4.11 per share [5]. - After the September 26 disclosure, the stock price dropped by $0.29, or 6.6%, to close at $4.09 per share [6]. - On October 23, 2025, the stock price fell by $1.17, or 25.4%, closing at $3.43 due to the withdrawal of the year-end forecast [7]. - On October 27, 2025, the Tokyo Stock Exchange designated Nidec under a Special Security alert, leading to a further decline of $0.80, or 20.3%, with the stock closing at $3.15 per share [8][9]. Group 3: Regulatory Response - The Tokyo Stock Exchange indicated that improvements in Nidec's internal management system are highly necessary, noting deficiencies in internal controls related to accounting and financial processes [8].