上交所深夜火速出手！亚辉龙、英集芯因信息披露不准确收监管函

Core Viewpoint - The "brain-computer interface" has become a market hotspot, leading to significant stock price increases for several companies, which has drawn regulatory scrutiny [1][2]. Group 1: Regulatory Actions - On January 7, the Shanghai Stock Exchange issued regulatory warnings to companies including Yahui Long and Yingjixin for inaccurate and incomplete disclosures related to their "brain-computer interface" business [1][2]. - Yahui Long's stock price rose by 6.52% on January 6, with trading volume increasing by 299% compared to the previous trading day [2]. - Yingjixin's response to investor inquiries about its IPA1299 chip, which is designed for high-precision measurement of biological electrical signals, led to regulatory scrutiny due to misleading implications about its market readiness and performance [2][3]. Group 2: Company Disclosures - Yahui Long disclosed a strategic cooperation agreement with Shenzhen Brain Machine Star Chain Technology Co., stating that the latter is a leading company in both non-invasive and invasive technology paths, which prompted regulatory inquiries [1]. - Following regulatory pressure, Yahui Long clarified that Brain Machine Star Chain is currently focused on non-invasive technology and that its products are still in early research and development stages [1][3]. - Yingjixin's IPA1299 chip is a joint product with a subsidiary and is still in the market cultivation phase, with no significant impact on the company's performance yet [3]. Group 3: Market Reactions - Several companies, including Weisi Medical, Xiangyu Medical, and Mailande, experienced significant stock price increases, with cumulative price deviations exceeding 30% over two consecutive trading days, triggering abnormal trading notifications [3][4]. - Despite their involvement in the brain-computer interface sector, these companies primarily focus on rehabilitation medical devices, and their related business activities are still in the research or early exploration stages, not significantly impacting their operational performance in the short term [4].