何錦安 袁佳鑫 賴明聰 張士瑜


摘要:由于股票交易中實際存在的交易費用是影響投資決策的一個重要因素,考慮帶交易費用的在線投資組合策略。大幅度調整股票頭寸會產生較高的交易費用,將上一期策略與所有歷史數據對應的最優定常再調整策略進行加權平均,設計了一個在線投資組合策略。考慮到股票市場往往波動劇烈,過去較長時間的歷史數據對當前的投資決策影響不大,僅利用近期固定時間長度的歷史數據構造策略,設計了一個適應性的在線投資組合策略。在考慮交易費用的情況下對策略進行實證分析,結果表明策略仍然具有較好的性能。
Abstract: As transaction costs exist in the actual stock trading is an important factor in investment decision making, this article presents an online portfolio strategy with transaction costs. As we all know, massively adjustment of portfolios brings large transaction costs. According to the latest portfolio and the corresponding best constant rebalanced portfolio based on historical data, we compute weighted mean and design an online portfolio strategy. The stock market always fluctuates intensely, so the stock prices far from now have little impact on the current investment decision, and thus we design online portfolio strategy only basing on the recent fixed length of historical data. An empirical analysis is carried out in consideration of transaction costs, which shows that the strategy has a better performance.
關鍵詞:在線投資組合;交易費用;實證分析
Key words: online portfolio;transaction costs;empirical analysis
中圖分類號:F830.59 文獻標識碼:A 文章編號:1006-4311(2017)01-0156-02