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Expert System for Portfolio Optimization under Multi-tree ModelsHuang, Kuo-Chan 05 July 2009 (has links)
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The Arbitrage Opportunities between Taiwan Depositary Receipt and Underlying Stocks.Chou, Yueh-Chin 24 July 2012 (has links)
The issue of depositary receipt gets more attention in investors in recent year because of the explosion of Taiwan Depositary Receipt (hereafter, TDR) in Taiwan. The depositary receipts should equal to the value of primary listing stocks because they are represent the same value to a company. Therefore, we would discuss the price relationship between TDR and the primary listing stock it represents at first.
In addition, because all the TDRs in Taiwan have the price spread (i.e. the price difference between TDRs and the primary listing stocks) with its original stocks, we discuss what the reasons to cause the price spread from a point of market segment. And we find it is because of liquidity, demand, information asymmetry, and stock price manipulation to lead to the price spread. After we takes market emotion into account, the market index has significant influence on price spread and individual investors also have a large influence on price spread.
Finally, we try to find that whether the market has the arbitrage opportunity from the price spread after we consider the transaction cost. And the result shows that when TDR is in discount, it really has the arbitrage opportunity in market after we use the close price as the transaction price. Furthermore, if we use the open price in the next day as the transaction price, it still has excess return in market, but the profit will be lower than the strategy using the close price as the transaction price.
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Opportunistic Fresh-Produce Commercialization under Two-Market DisintegrationJanuary 2011 (has links)
abstract: This thesis develops a low-investment marketing strategy that allows low-to-mid level farmers extend their commercialization reach by strategically sending containers of fresh produce items to secondary markets that present temporary arbitrage opportunities. The methodology aims at identifying time windows of opportunity in which the price differential between two markets create an arbitrage opportunity for a transaction; a transaction involves buying a fresh produce item at a base market, and then shipping and selling it at secondary market price. A decision-making tool is developed that gauges the individual arbitrage opportunities and determines the specific price differential (or threshold level) that is most beneficial to the farmer under particular market conditions. For this purpose, two approaches are developed; a pragmatic approach that uses historic price information of the products in order to find the optimal price differential that maximizes earnings, and a theoretical one, which optimizes an expected profit model of the shipments to identify this optimal threshold. This thesis also develops risk management strategies that further reduce profit variability during a particular two-market transaction. In this case, financial engineering concepts are used to determine a shipment configuration strategy that minimizes the overall variability of the profits. For this, a Markowitz model is developed to determine the weight assignation of each component for a particular shipment. Based on the results of the analysis, it is deemed possible to formulate a shipment policy that not only increases the farmer's commercialization reach, but also produces profitable operations. In general, the observed rates of return under a pragmatic and theoretical approach hovered between 0.072 and 0.616 within important two-market structures. Secondly, it is demonstrated that the level of return and risk can be manipulated by varying the strictness of the shipping policy to meet the overall objectives of the decision-maker. Finally, it was found that one can minimize the risk of a particular two-market transaction by strategically grouping the product shipments. / Dissertation/Thesis / M.S. Industrial Engineering 2011
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由市場的選擇權價格還原風險中立機率分布張瓊方, Chang, Chiung-Fang Unknown Date (has links)
本論文提出線性規劃的方法以還原隱藏於選擇權市場價格中的風險中立機率測度,並利用該機率測度計算選擇權的合理價格。模型中假設選擇權對應同一標的資產與到期日,資產價格於到期日的狀態為離散點且個數有限,當市場不具任何套利機會時,以極小化市場價格與合理價格之離差總和作為挑選風險中立機率測度的準則。最後,以臺指選擇權(TXO)的交易資料做為實證對象。實證中發現,加入平滑限制式與離差權重之線性規劃模型在評價歐式選擇權合理價格的效能最為優異。 / The thesis proposes a liner programming to recover the risk-neutral probability distribution of an underlying asset price from its associated market option prices, and we evaluate the fair prices of options via the resulting risk-neutral probability distribution. Assume that we face a series of European options with different exercise prices on the same maturity and underlying asset in this linear programming model. The criterion of choosing a risk-neutral probability distribution is minimizing the sum of total deviations subject to requiring that the fair prices of options are consistent with observed market option prices. Finally, we take the trading data of TXO as an empirical study. The empirical study indicates that the model with smooth constraints and weighted deviations has the best performance in pricing the rational price of European options.
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