Abstract
Using a large sample of A-share listed companies on the Chinese stock market, we investigate the impact of information interaction among institutional investors (IIAII) on stock price crash risk. IIAII is measured using a multiplex network constructed from data on the multiple social relations of institutional investors. We find a positive and significant relationship between IIAII and crash risk. The results of the influencing mechanism analysis show that IIAII influences crash risk through the herd effect rather than the monitoring effect. Overall, our findings elucidate the important role of institutional investors in corporate governance and promote the application of multiplex network theory to the financial field.
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