Core Viewpoint - The establishment of a regular communication mechanism between relevant authorities and the China Securities Regulatory Commission (CSRC) aims to support the capital market in Shenzhen's comprehensive reform, with expectations for a series of reforms, including the return of companies listed on the Hong Kong Stock Exchange to the Shenzhen Stock Exchange [1][2] Group 1: Market Dynamics - The Shenzhen authorities have enhanced communication with various ministries since the issuance of the "Opinions on Deepening the Reform and Innovation of Shenzhen's Comprehensive Reform Pilot" [2] - The market anticipates that the return of companies from the Guangdong-Hong Kong-Macao Greater Bay Area to the Shenzhen Stock Exchange will provide more investment opportunities for investors and contribute to the growth of the A-share market [2][3] Group 2: Eligible Companies - There are over 250 companies listed on the Hong Kong Stock Exchange that are registered in the Guangdong-Hong Kong-Macao Greater Bay Area, with 30 already listed on the A-share market and 220 yet to return [3] - Among the 220 companies, the top three by market capitalization are AIA Group (737.19 billion HKD), Hong Kong Exchanges and Clearing (548.47 billion HKD), and Bank of China (Hong Kong) (379.03 billion HKD) [3] Group 3: Regulatory Framework - The National Development and Reform Commission has indicated support for eligible Hong Kong-listed companies to issue depositary receipts on the Shenzhen Stock Exchange, clarifying the path for different types of Hong Kong companies to return to A-shares [3][4] - The current rules require that red-chip companies seeking secondary listings on the Shenzhen Stock Exchange must have a market capitalization of at least 200 billion CNY and possess strong technological innovation capabilities [5][6] Group 4: Economic Implications - The return of Hong Kong-listed companies to the Shenzhen Stock Exchange is expected to enrich the industry matrix and enhance the valuation system of the A-share market, potentially attracting international capital [6][7] - The dual listing on both the Shenzhen and Hong Kong exchanges may facilitate the return of offshore RMB, thereby promoting the internationalization of the RMB and enhancing cross-border capital flow [7]