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The impact of the Shanghai–Hong Kong stock market connection on corporate innovation: Evidence from mainland China

Guanming He, Xiaorong Li and Jingbo Luo

International Journal of Finance & Economics, 2023, vol. 28, issue 3, 3132-3161

Abstract: The Shanghai stock market and the Hong Kong stock market were connected by the Chinese government in 2014, allowing Hong Kong investors to trade on a group of stocks on the Shanghai stock market. Using a difference‐in‐differences approach, we examine how this stock market connection affects corporate innovation in mainland China. We argue, and find, that the stock market connection enhances the informational feedback effect of stock prices and involves more‐sophisticated investors' monitoring and advising on firm management, and thereby spurs corporate innovation. We further show that the positive effect of the stock market connection on innovation is more pronounced for non‐state‐owned firms, firms with few political connections, firms with weak intellectual property rights protection or firms that are headquartered in non‐high‐tech economic zones. Our study sheds light on how the opening of a developing stock market to a more developed stock market shapes corporate innovation.

Date: 2023
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International Journal of Finance & Economics is currently edited by Mark P. Taylor, Keith Cuthbertson and Michael P. Dooley

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