Summary: | 碩士 === 國立交通大學 === 工業工程與管理系所 === 102 === Stock market is the most common investment tool in the present time. Although it is easy to get the information of any share, the information sometimes is too much to determine the plausible bid price or selling price for stock investor. Some successful stock investors such as Warren Buffett, Graham, have their own way to make the decisions. Investors can not adopt all of their suggestions. Therefore, the objective of this study is to determine optimal investing share prices for Taiwanese stocks. First, the financial indicators (e.g. gross margin ratio, return on equity etc.) are used to pick up the potential shares, to avoid investment on the financial crisis company. Then, the rolling-bias corrected and accelerated (BCa) bootstrap confidence intervals are employed to estimate the bid price and selling price for these stocks. Finally, the sensitivity analysis of different (1-α)100% confidence intervals is conducted by varying the return on investment (ROI) and trading frequency. Sixteen Taiwan Stocks are selected to demonstrate the effectiveness of the proposed method. The analytical results show that the proposed method can effectively reduce the investment risk and promote the ROI.
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