Group 1 - A total of 143 stocks reported their latest shareholder numbers as of May 10, with 58 stocks showing a decrease compared to the previous period [1][3] - The stocks with the largest decline in shareholder numbers include Huafeng Super Fiber, *ST Qingyan, and Zhejiang Zhengte, with declines exceeding 5% [3] - The stock with the most significant drop in shareholder numbers is Huafeng Super Fiber, which decreased by 10.62% to 101,000 shareholders [3] Group 2 - Among the concentrated chip stocks monitored from April 30, 74% outperformed the Shanghai Composite Index, with an average increase of 6.93% since April 21 [2] - The stock with the highest increase among those with a decline in shareholder numbers is Shanshui Bide, which rose by 40.47% since April 21 [2] - The latest concentrated chip stocks showed an average increase of 5.24% since May 1, with notable performers including Aoya Shares and *ST Qingyan, which increased by 21.40% and 19.74% respectively [3]