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Nov 5 (Reuters) - Shares of Chinese electric vehicle maker Seres Group , the EV partner of technology firm Huawei (HWT.UL), fell almost 2% in the company's Hong Kong Stock Exchange debut on Wednesday after it raised $1.84 billion in a listing. Seres Group, already listed in Shanghai, sold 108.6 million shares at HK$131.50 each in the deal where the initial number of shares was increased during the bookbuilding process due to strong demand. Sign up here. The retail portion of Seres' listing was nearly 133 times oversubscribed while the institutional tranche was about 9 times oversubscribed, according to the company's regulatory filings. Reporting by Scott Murdoch in Sydney; Editing by Muralikumar Anantharaman