JoulWatt(SH:688141) Xin Lang Cai Jing·2025-09-24 02:29Group 1 - The core point of the article highlights the recent performance of Jiewa Microelectronics, with a stock price increase of 5.31% to 54.13 CNY per share, a trading volume of 521 million CNY, and a total market capitalization of 24.19 billion CNY [1] - Jiewa Microelectronics, established on March 18, 2013, specializes in the research and sales of analog integrated circuits, providing high-efficiency, high-performance, and high-reliability solutions [1] - The company's main revenue sources include power management chips (93.09%), with specific contributions from DC-DC chips (56.79%), AC-DC chips (20.48%), linear power chips (14.40%), signal chain chips (4.37%), and battery management chips (1.43%) [1] Group 2 - From the perspective of fund holdings, Jiewa Microelectronics is a significant investment for Changcheng Fund, with the Changcheng Jiuheng Mixed A Fund increasing its holdings by 6,897 shares, representing 3.75% of the fund's net value [2] - The Changcheng Jiuheng Mixed A Fund has shown impressive performance, with a year-to-date return of 57.35% and a one-year return of 131.07%, ranking 685th out of 8,173 funds and 244th out of 7,996 funds respectively [2] - The fund manager, Shuwenyu, has a tenure of 10 years and 140 days, with the best fund return during this period being 64.9% [3]