2 1 Shi Ji Jing Ji Bao Dao·2026-02-24 05:07Group 1 - Tianfeng Securities and Yingjixin both disclosed being under investigation on the last working day before the 2026 Spring Festival, leading to significant stock price declines and potential compensation claims for investors [2] - Tianfeng Securities faced multiple regulatory actions on February 14, 2026, including administrative penalties and a new investigation, due to serious violations related to fund transactions amounting to 5.502 billion yuan from 2020 to 2022 [3] - The company was fined a total of 25 million yuan, with 9 responsible individuals penalized a total of 34.8 million yuan, reflecting the regulatory authority's commitment to addressing industry misconduct [3] Group 2 - Yingjixin was investigated for misleading statements made on an interactive platform regarding its brain-machine interface chip, which was claimed to be comparable to leading overseas products, but later clarified to be in a different application field [6] - Despite the misleading information, Yingjixin's stock price rose by 4.51% on January 7, 2026, indicating the impact of market speculation driven by the initial claims [6] - Investors who purchased Yingjixin shares between January 6 and February 13, 2026, and sold or held them at a loss after February 14, 2026, may prepare for legal claims [7]