Mei Ri Jing Ji Xin Wen·2025-10-09 14:04Core Viewpoint - Semiconductor Manufacturing International Corporation (SMIC) has faced a sudden situation where its A-share margin financing ratio has been adjusted to zero by major brokerages due to its static price-to-earnings (P/E) ratio exceeding 300 times, as per the revised rules of the Shanghai and Shenzhen Stock Exchanges [1][2] Group 1: Impact on SMIC - As of September 30, SMIC's static P/E ratio was just over 300, leading to the adjustment of its A-share margin financing ratio to zero by brokerages like CITIC Securities and Guotai Junan [1][2] - Prior to this adjustment, SMIC's A-share margin financing ratio was 70% at Guotai Junan [1] - Other stocks, such as Bawei Storage, also had their margin financing ratios adjusted to zero due to similar P/E ratio conditions [2] Group 2: Market Regulations - The Shanghai Stock Exchange's revised margin financing rules state that A-shares with a static P/E ratio above 300 or negative values will have a margin financing ratio of 0% [2] - The static P/E ratio is calculated based on the stock's closing price and the audited earnings per share from the most recent fiscal year [2] Group 3: Investor Implications - Investors holding stocks with a margin financing ratio reduced to zero may need to provide additional collateral or liquidate some assets to continue financing [3] - Existing positions are generally not forced to be liquidated, but new positions cannot be opened until the margin financing ratio changes [3] Group 4: Comparison with Hong Kong Market - The Hong Kong market has a more flexible approach, allowing brokerages to set their own margin financing ratios without strict rules on high P/E ratios or losses [4][5] - SMIC's Hong Kong shares currently have a margin financing ratio of around 50%, despite its static P/E ratio being 175 times [5] - Other stocks with high P/E ratios in the Hong Kong market, such as Hua Hong Semiconductor, can still be used as collateral for financing [5]