Group 1 - 28 companies listed on the ChiNext board reported their latest shareholder numbers as of December 20, with 17 companies experiencing a decline in shareholder numbers compared to December 10, and 3 companies seeing a decline of over 5% [1] - The company with the largest decline in shareholder numbers is Silver Bond Co., Ltd., which reported 60,353 shareholders, a decrease of 13.20%, and has seen a cumulative drop of 3.29% in stock price since the concentration of shares began [1] - Shouhua Gas reported 19,035 shareholders, down 9.56%, with a cumulative stock price drop of 8.42% since the concentration began [1] Group 2 - Four companies have shown a continuous decline in shareholder numbers for more than three consecutive periods, with the most significant drop being 5 periods [1] - Chuangyitong reported 8,003 shareholders, a cumulative decline of 13.26% over five periods, while Hongming Co., Ltd. reported 4,199 shareholders, with a cumulative decline of 16.14% over four periods [2] - The average stock price of concentrated shares has decreased by 3.30% since December 11, with Hongming Co., Ltd. and Longlide showing increases of 0.67% and 0.29%, respectively [2]