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利用月差和曲线结构预测原油库存变化

2017-09-28 09:47:51   

指导意义及不足

对比上述三个阶段,可以发现在C结构下,市场补库存的情绪比B结构下要积极。特别是在原油期货处于下降趋势的情况下,且处于C结构,价差预测库存变化最有效。研究成果可以帮助解决择时的问题,在趋势不明朗的情况下,可以借助研究结果验证目前的情况,帮助投资者选择入场时间。

然而研究依然存在不足,首先利用美国库存代表整体数据,不能完全包含所有样本的特点;其次,利用ICE的价差结合美国的库存数据会出现日期不吻合的情况,但影响不大,而且,价差选择、库存变化周期很可能出现变化。最后,突发事件未能考虑进入模型,不能更好地贴合市场。

产量对库存的传导作用

产量和库存

图为库存与产量对比

库存和产量通过单因素模型,统计结果如下:

R Square 0.149191

Adjusted R Square 0.144616

从大方向来说,库存和产量的走势趋同,但不能直接就认为产量增加就一定会导致库存的增加。一是产量不会直接导致库存增加,产量的影响传导至库存变化一定要考虑消费、进口、出口等因素;二是产量与库存之间的线性关系很弱,R平方只有0.15,不能完全解释库存变化。

产量与价格

图为产量与价格对比

价格和产量通过单因素模型,统计结果如下:

R Square 0.383084357

Adjusted R Square 0.379767606

为了更好地发现数据的特征,统计学结果如上。

从大方向来说,价格和产量的走势有较强的背离,但不能直接就认为产量增加就一定会导致价格的走低。产量不会直接导致价格变化,产量的影响传导至价格变化一定要考虑金融环境、投机度、消费等因素。另外,产量与价格之间的线性关系很弱,R平方只有0.38,不能完全解释库存变化,但快速增长的产量会导致价格的下跌。

指导意义

产量和库存的传导没有明显的线性关系,有一定的滞后性,但结合研究成果,从价格和产量的趋势来看,过高的产量会对价格打压,导致曲线结构的变化从而传导至库存的上升。

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