本篇主要是依循Allen, Morris and Shin(2003) 的文章脈絡，利用建立一個帶有雜質的(即受供給面衝擊的)理性預期模型，使期貨價格無法完全反映期貨市場中的真實訊息，並將重覆預期的概念套入商品期貨的價格模型當中，討論是否期貨價格會受公開訊息的影響較大，而較不重視貨市場真實情形的私人訊息，進而了解商品期貨市場中的參與者過度倚賴公開訊息做決策時，可能會造成期貨價格偏離其基本價值的情形。
由模型推導結果我們歸納出與Allen, Morris and Shin(2003) 一致的結論－當市場中的參與者對市場的平均作預期，藉以猜測其他人的想法時，其預期受市場公開訊息的影響程度可能較深，反而受較貼近市場真實價格的私人訊息影響較小，產生使市場被公開訊息支配的情形。 / This paper primary follows the methods derived by Allen, Morris, and Shin (2003), using a contaminated, or with a supply shock, rational expectation model to build the linear relationship for commodity futures price. In this way, the price could not fully reflect the true information in commodity futures price. Besides, we also use the notion of iterated expectation in our futures price model, and try to figure out whether the price is influences mainly by the public information, but no the true information in the market. Thus, we can imply form this that when participants excessively depend on public information to make decisions, it may cause the futures price to deviate from its true information and thus its fundamental value.
From the derivation of our model, we can have identical conclusion as Allen, Morris and Shin (2003) put it－when participants in the market doing expectations about the market’s average to guess other participants’ opinions, their expectation may be influenced mostly by public information in the market but not the true, or private, information they possess, which may result in futures prices dominating by the public information.
| Identifer | oai:union.ndltd.org:CHENGCHI/G0097351013 |
| Creators | 黃琬君 |
| Publisher | 國立政治大學 |
| Source Sets | National Chengchi University Libraries |
| Language | 中文 |
| Detected Language | English |
| Type | text |
| Rights | Copyright © nccu library on behalf of the copyright holders |
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