Group 1 - Jiangnan New Materials has seen a stock price increase of 5.21% on December 25, reaching 86.50 CNY per share, with a trading volume of 341 million CNY and a turnover rate of 13.98%, resulting in a total market capitalization of 12.607 billion CNY [1] - The stock has experienced a continuous rise for six days, accumulating a total increase of 20.06% during this period [1] - Jiangnan New Materials, established on July 26, 2007, specializes in the research, production, and sales of copper-based new materials, with its main business revenue composition being 78.30% from copper ball series, 17.26% from copper oxide powder series, and 1.74% from high-precision copper-based heat sinks [1] Group 2 - Changsheng Fund has a significant holding in Jiangnan New Materials, with its Changsheng Craftsmanship Research Mixed A Fund (014885) holding 25,500 shares, accounting for 2.39% of the fund's net value, ranking as the tenth largest holding [2] - The fund has realized a floating profit of approximately 109,100 CNY today and a total of 350,200 CNY during the six-day increase [2] - The Changsheng Craftsmanship Research Mixed A Fund was established on July 5, 2022, with a current scale of 63.4632 million CNY, achieving a year-to-date return of 30.19% and a one-year return of 27.45% [2]

Group 1 - The core viewpoint of the news is that Jingwang Electronics experienced a 6% decline in stock price, reaching 70.49 yuan per share, with a trading volume of 475 million yuan and a turnover rate of 0.71%, resulting in a total market capitalization of 66.433 billion yuan [1] - Jingwang Electronics, established on March 9, 1993, and listed on January 6, 2017, is primarily engaged in the research, production, and sales of printed circuit boards, with 94.67% of its revenue coming from this main business and 5.33% from other supplementary activities [1] Group 2 - From the perspective of fund holdings, Changsheng Fund has one fund heavily invested in Jingwang Electronics, specifically the Changsheng Craft Research Mixed A (014885), which reduced its holdings by 33,500 shares in the second quarter, now holding 83,000 shares, accounting for 2.67% of the fund's net value, ranking as the tenth largest holding [2] - The Changsheng Craft Research Mixed A fund, established on July 5, 2022, has a latest scale of 88.8702 million yuan, with a year-to-date return of 40.11%, ranking 1752 out of 8173 in its category, and a one-year return of 82.08%, ranking 1197 out of 7996 [2] - The fund manager, Guo Kun, has a tenure of 9 years and 322 days, managing total assets of 2.531 billion yuan, with the best fund return during his tenure being 104.04% and the worst being -4.45% [2]