我搜了一下“impact on firm value of a large shareholder changing stake”,找到一篇“when blockholders le**e feet first: do ownership and control affect firm value?”,感觉和你要写的不是完全一样,不过还算沾边。这一篇能搜到pdf的又搜了一下“impact of a large shareholder increasing stake”,找到一篇“intra-industry effects analys** of increasing stake by major shareholder” 。不过这个我只找到了abstract 20210311