To calculate the number of hedging hands, we must first calculate the beta value of China Southern Airlines relative to the Shanghai and Shenzhen 300 Index. GARCH model is usually used to regress the daily returns of China Southern Airlines and Shanghai-Shenzhen 300 Index from April 20, 2009 to September 20, 2009, and the beta value of China Southern Airlines' stock price relative to Shanghai-Shenzhen 300 Index is equal to 1. 13. As of September 16, the Shanghai and Shenzhen 300 index was 2857.79 points. In the same period, the futures contract price is 2940 points, and the number of hedging contracts is1103 = (1100,000 /(2940 * 3003).
In the past 1 year, the maximum absolute value of the Shanghai and Shenzhen 300 Index was 5.6%, which was 28% of the volatility of the futures index according to the leverage of 5 times. Therefore, it is recommended to deduct the position deposit. Keep at least 30% of available funds to prevent the risk of forced liquidation caused by large fluctuations in futures index. According to the market data of September 16, combined with the position margin and the ratio of available funds, it is suggested to invest about 2.98 million yuan in the stock index futures account.