Zheng Quan Shi Bao Wang·2025-12-19 09:39Group 1 - The National Big Fund holding concept declined by 0.56%, ranking among the top declines in concept sectors, with stocks like Jiangbolong, Nanda Optoelectronics, and Saiwei Electronics experiencing significant drops [1][2] - Among the 23 stocks that rose, Beidouxingtong, Sitwei, and Robot saw increases of 2.06%, 1.94%, and 1.49% respectively [1][2] - The National Big Fund holding concept experienced a net outflow of 1.604 billion yuan, with 29 stocks seeing net outflows, and 5 stocks exceeding 100 million yuan in outflows, led by Saiwei Electronics with a net outflow of 692.86 million yuan [2][3] Group 2 - The top net inflow stocks included ShenNan Circuit, SMIC, and Northern Huachuang, with net inflows of 147 million yuan, 125 million yuan, and 108 million yuan respectively [2][4] - The stocks with the highest net outflows included Saiwei Electronics (-3.49%), Jiangbolong (-5.64%), and Nanda Optoelectronics (-3.53%) [3][4] - The trading activity showed that the turnover rates for these stocks varied, with Saiwei Electronics at 17.14% and Jiangbolong at 6.72% [3]