過去外匯避險之相關文獻多僅針對局部策略或單一工具加以探討，缺乏全面性之比較。本研究針對台幣兌美元避險，利用G-K外匯選擇權訂價模型並考量避險成本，讓不同外匯避險部位、策略、工具及期間長度等情境能具有一致的比較基準。避險部位分成完全避險、最適比率避險與不避險三種；避險策略分為定期性避險、投機型選擇性避險與中立型選擇性避險等三種；避險工具則使用遠期外匯合約與外匯選擇權二種；避險長度使用一週、一個月、二個月、三個月及六個月等五種期間。實證結果顯示：外匯選擇權的避險效果優於遠匯合約；避險長度以一至三個月為最佳；除台幣處於短期急貶或狹幅盤整外，整體而言以外匯選擇權做最小變異數法定期避險，其避險效果最佳。

The currency hedging related studies in Taiwan merely focus on parts of the variables rather than all of them together. Scenarios in this empirical study are designed for USD/TWD hedging with different hedging positions, strategies, tools and period lengths. Hedging positions for simulation include ‘Naïve Hedge’ and ‘Optimal Ratio Hedge’. Strategies consist of ‘Periodic Hedge’, ‘Advantaged Selective Hedge’ and ‘Neutral Selective Hedge’. Tools contain ‘Forward Contract’ and ‘Option’. And period lengths cover ‘1 Week’, ‘1 Month’, ‘2 Month’, ‘3 Month’ and ‘6 Month’. G-K Option Pricing Model are applied with transaction cost so that all the different scenarios can be compared at a neutral and consistent basis. The result shows that: First, hedging by option is superior to forward. Second, the best length of currency hedging is one to three months. Third, periodically hedging by option with minimum variance ratio can get the best hedging effectiveness in most scenarios except while TWD depreciates sharply or fluctuates in a narrow band.

國內文獻
(1)王凱立，陳美玲，「台灣外匯市場交互動態關聯之研究」，第五屆全國實證經濟學論文研討會，民國96年。
(2)向碧盈，「外匯交易風險的避險策略－針對遠期外匯及期貨交叉避險之比較研究」，國立交通大學，碩士論文，民國84年。
(3)岑蕙娟，「匯率風險管理－期貨契約最適交叉避險之研究」，國立台灣大學，碩士論文，民國78年。
(4)張伯聖，「企業外匯風險之規避方法及匯率預測之研究：以電子電機產業為例」，中華大學，碩士論文，民國87年。
(5)張傳章， 期貨與選擇權，初版，雙葉書廊，台北市，民國94年。
(6)梁儷文，「遠期外匯及外匯選擇權避險之有效性－以台灣某上市公司為例」，逢甲大學，碩士論文，民國94年。
(7)黃玉芳，「企業外匯風險管理與避險策略之評估」，國立中山大學，碩士論文，民國91年。
(8)黃富纖，「外匯避險模型下之避險績效評估」，國立台灣大學，碩士論文，民國97年。
(9)劉孟宜，「新台幣匯率風險管理－外匯期貨及遠期外匯契約交叉避險效益分析」，逢甲大學，碩士論文，民國90年。
(10)潘昶安，「亞洲金融風暴對我國外匯市場影響之研究」，中正大學，碩士論文，民國89年。
 
國外文獻
(1)Albuquerque, R., "Optimal currency hedging.", Global Finance Journal, Vol 18, 1, pp.16-33, 2007.
(2)Anderson, R. and Danthine, J., "Cross Hedging.", The Journal of Political Economy, Vol 89, 6, pp.1182-1196, 1981.
(3)Black, F. and Scholes, M., "The Price of Option and Corporate Liabilities.", Journal of Political Economics, Vol 81, 3, pp.637-659, 1973.
(4)Ederington, L., "The Hedging Performance of the New Futures Markets.", The Journal of Finance, Vol 34, 1, pp.55-60, 1979.
(5)Fishburn, P., "Mean-Risk Analysis with Risk Associated with Below-Target Returns.", The American Economic Review, Vol 67, 1, pp.116-126, 1977.
(6)Garman, M. and Kohlhagen, S., "Foreign Currency Option Values.", Journal of International Money and Finance, Vol 2, 3, pp.231-237, 1983.
(7)Heifner, R., "Optimal Hedging Levels and Hedging Effectiveness in Cattle Feeding.", Agricultural Economics Research, 24, pp.25-36, 1972.
(8)Howard, C. and D''Antonio, L., "A Risk-Return Measure of Hedging Effectiveness.", Journal of Financial and Quantitative Analysis, Vol 19, 1, pp.101-112, 1984.
(9)—. "A Risk-Return Measure of Hedging Effectiveness: A Reply.", Journal of Financial and Qujantitative Analysis, Vol 22, 3, pp.377-381, 1987.
(10)Johnson, L., "The Theory of Hedging and Speculation in Commodity Futures.", Review of Economic Studies, Vol 27, 3, pp.139-151, 1960.
(11)Kahl, K., "Determination of The Recommended Hedging Ratio.", American Journal of Agricultural Economics, Vol 65, 3, pp.603-605, 1983.
(12)Long, D., "Testing the Efficiency of the Canadian- U.S. Exchange Market under the Assumption of No Risk Premium.", Journal of Finance, Vol 36, 1, pp.43-51, 1981.
(13)Markowitz, H., "Portfolio Selection.", The Journal of Finance, Vol 7, 1, pp.77-91, 1952.
(14)McCarthy, S., "Hedging versus Not Hedging, Strategies for Managing Foreign Exchange Transaction Exposure.", Discussion Papers in Economics, Finance and International Competitiveness., Queensland, School of Economics and Finance, Queensland University of Technology, 2003.
(15)Millar, W., New Directions in Finanacial Risk Management., New York, Business International Corporation, 1989.
(16)Ng, N., "Detecting Spot Price Forecasts in Futures pricing Using Causality Tests.", The Review of Futures Markets, pp.250-267, 1987.
(17)Rawls, S. and Smithson C., Strategic Risk Management., New York, McGraw-Hill, 1993.
(18)Shapiro, A., Multinational Financial Management., Edition 9, John Wiley & Sons, 2009.
(19)Sharpe, W., "Mutual Fund Performance.", The Journal of Business, Vol 39, 1, pp.119-138, 1966.
(20)Stein L., "The Simultaneous Dtermination of Spot and Futures Prices.", American Economic Review, Vol 51, 5, 1961.
(21)Working, H., "Futures Trading and Hedging.", American Economic Review, Vol 43, 3, pp.431-459, 1953.
(22)—., "New Concepts Concerning Futures Markets and Prices.", American Economic Review, Vol 52, 3, pp.431-459, 1962.