通知公告
【讲座信息】财金研究所第二十期学术报告
主题:The Reverse Soybean Crush Spread: Evidence of the Hedging Pressure Hypothesis(大宗商品的反向套期图利:以大豆为例来检验对冲压力假说)
主讲:李子燃副教授,西南财经大学
主持:高翔
时间:11月23日(周五)下午14:00 -15:30
地点:上海商学院徐汇校区14楼研讨室
内容提要:Economists have been searching for the hedging pressure–induced futures price bias since John Keynes (1930). So far the literature has reached no consensus. In this paper, we examine a general equilibrium model that features hedging demands of two closely related commodity futures markets. We show that if the hedging demand of both longs and shorts balance out, the risk premium would be zero. However, there is no hedger on the opposite side of the crush spread,namely the hedge trade placed by the commodity processors. As a result, the speculator’s positions are needed to clear the market, which results in a risk premium. We examine the soybean crush spread in the empirical section, and present the first convincing evidence that hedging pressure actually exists.
目前学界尚未就凯恩斯(1930)提出的套期保值压力理论提供有力实证支撑。在本文中,我们就这一现象提供了一种可能的理论解释:绝大多数商品期货存在多空双方的套期保值者,套期保值压力的方向性具有很大的不确定性,而统计检验的前提是假设这一压力的具体方向。因为大豆压榨厂并不存在‘套期保值对手’,所以我们实证检验了大豆压榨厂的套期保值策略在CME市场上的表现。我们发现大豆提油套利的远期期货差额交易确实存在风险溢价。就此差额交易的被动交易策略近50年的无杠杆年化夏普率达到1.04,远高于S&P500的0.46.
演讲者简介:李子燃副教授,2017年毕业于爱荷华州立大学(Iowa State University)获经济学博士学位。现为西南财经大学财税学院投资系副教授,研究领域主要包括:数量金融学,行为经济学和公共政策评价。科研成果已发表在American Journal of Agricultural Economics, Journal of Futures Markets,Agricultural Finance Review等国际知名期刊。
主办单位:上海商学院财金研究所
承办单位:上海商学院财金研究所