A multi-stage financial hedging approach for the procurement of manufacturing materials

A multi-stage financial hedging approach for the procurement of manufacturing materials
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制造材料采购的多阶段财务对冲方法

DOI:
10.1016/j.ejor.2012.03.031
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发表时间:
2012-09
影响因子:
6.4
通讯作者:
Y. Shi
Y. Shi
中科院分区:
管理学2区
文献类型:
--
作者:
J.Ni;L. K. Chu;F. Wu;D. Sculli;Y. Shi

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本文件提出了一种多阶段时间框架内的套期保值战略,以解决减轻商品价格波动引起的采购风险的问题。建议的多阶段对冲策略要求正确初始化商品期货头寸,并以足够数量的短/长头寸重新平衡,以减少因商品现货价格变化而产生的总采购成本波动。这一方法的新奇在于在确定的中间阶段对商品期货头寸进行再平衡。为了获得有效或接近最优的多阶段套期保值策略,建立了离散时间随机控制模型。数值实验和蒙特卡罗模拟表明,提出的多阶段套期保值策略优于最小方差套期保值和一阶段套期保值。当采购量和价格相互独立时,给出了最优解的解析表达式。
This paper addresses the problem of mitigating procurement risk that arises from volatile commodity prices by proposing a hedging strategy within a multi-stage time frame. The proposed multi-stage hedging strategy requires a commodity futures position to be correctly initialised and rebalanced with adequate volumes of short/long positions, so as to reduce the volatility in the total procurement cost that would otherwise be generated by varying commodity spot prices. The novelty in the approach is the introduction of the rebalancing of commodity futures position at defined intermediate stages. To obtain an efficient or near optimal multi-stage hedging strategy, a discrete-time stochastic control model (DSCM) is developed. Numerical experiments and Monte Carlo simulation are used to show that the proposed multi-stage hedging strategy compares favourably with the minimal-variance hedge and the one-stage hedge. A close-form optimal solution is also presented for the case when procurement volume and price are independent.
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