Summary of Key Points Core Viewpoint - A total of 900 stocks reported their latest shareholder numbers as of May 31, with 396 stocks showing a decline compared to the previous period, indicating a trend of decreasing shareholder engagement in certain companies [1][3]. Group 1: Shareholder Changes - Among the 900 stocks, 29 stocks experienced a decline in shareholder numbers exceeding 10% [3]. - The stock with the largest decline in shareholder numbers was Ha Sanlian, which saw a decrease of 25.74% to 40,260 shareholders [3]. - Zhongxin Fluorine Materials followed with a 23.76% decrease in shareholder numbers, totaling 47,067 [3]. Group 2: Stock Performance - The average increase for concentrated stocks since May 11 was 4.30%, outperforming the Shanghai Composite Index, which rose by 1.28% [2]. - Among the stocks with a decline in shareholder numbers, *ST and Ke achieved the highest increase of 36.06% since May 11 [2]. - Stocks such as Gongchuang Lawn, Tainkang, and Taotao Automotive saw significant increases of 92.94%, 59.73%, and 40.03%, respectively, since the last monitoring period [3]. Group 3: Industry Concentration - The concentrated stocks were primarily found in the machinery, basic chemicals, and electronics sectors, with 47, 39, and 39 stocks respectively [3].

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]