必易微涨2.09%，成交额4611.64万元，主力资金净流出91.59万元

Group 1 - The core viewpoint of the news is that Biyimi's stock has shown significant growth this year, with a 40.60% increase, and recent trading activity indicates a mixed sentiment among investors [2][3] - As of September 12, Biyimi's stock price rose by 2.09% to 44.85 CNY per share, with a total market capitalization of 3.132 billion CNY [1] - The company's main business involves the design and sales of high-performance analog and mixed-signal integrated circuits, with revenue composition primarily from AC-DC (51.04%), driver ICs (44.33%), and DC-DC (3.94%) [2] Group 2 - Institutional holdings show that as of June 30, 2025, the sixth largest shareholder is Nuoan Multi-Strategy Mixed A, which holds 312,100 shares as a new shareholder [3] - The number of shareholders increased by 28.86% to 6,014 as of June 30, 2025, while the average circulating shares per person decreased by 20.74% to 6,267 shares [2] - For the first half of 2025, Biyimi reported a revenue of 283 million CNY, a year-on-year decrease of 6.99%, while the net profit attributable to the parent company was -8.8146 million CNY, reflecting a year-on-year increase of 16.92% [2]