“…The reason is that, on the one hand, M&A is one of the important ways for the company to achieve exogenous growth, which will help the company to achieve the expansion of asset scale, the rapid growth of sales revenue and profits, and then bring the growth of market value to the company. On the other hand, it is difficult for small and medium-sized investors to judge the economic essence of M&A transactions of listed companies and identify potential opportunistic behaviors, such as interest transfer or hollowing out ( Murray et al, 2017 ), and they can only respond positively to M&A news habitually or in conformity. Considering that the controlling shareholder of the pledged shares is most concerned about raising the stock price to avoid the potential transfer of control caused by margin calls and forced sale of shares, we suggest that the equity pledge of the controlling shareholder may encourage enterprises to seek value-added investment opportunities and actively participate in M&A activities.…”