| 1. | The arbitrage of commodity futures takes advantage of the price relation in different delivery month futures contracts . as market factors affecting short - term and long - term commodity future prices are not same , or the same factors may affect the market to different extent in the short term and long term , therefore their spread will change . the spread may deviate from the range of the price variation of the two contracts , or it may possibly form trend 商品期货套利交易利用不同期货合约之间的价格关系来获利,由于影响短期和长期期货价格的市场因素不尽相同,或者同一因素对市场的短期影响和长期影响有别,反映在期价的变化上就是近期合约价格和远期合约价格的变化幅度不一,最终导致不同期货合约间的价差关系发生变化,价差可能脱离两合约之间正常的价差变动范围,也可能形成趋势。 |