結合「公司治理評鑑」與指標選股之投資績效

Portfolio Performance Based on Corporate Governance Evaluation System and Financial Ratios

邱萬益(Wan-Yi Chiu) ； 林思妘(Sz-Yun Lin) ； 盧聖雅(Sheng-Ya Lu) ； 劉丞軒(Cheng-Hsuan Liu)

《應用經濟論叢》 Issue 115 (2024/06) Pp. 149-216

https://doi.org/10.7086/TJAE.202406_(115).0004

Abstracts

公司治理評鑑（corporate governance evaluation system, CGES）的宗旨包含：「獎勵優良企業，發揮標竿功能」。經由持續評鑑，可望提升企業因應ESG風險之能力。本研究探討CGES投資的相關議題。首先，針對不同評等的投資組合是否存在差異，本研究整合滾動式抽樣，7個CGES評等級距，8項財務指標，等權與最小變異數2種權重策略，評比各種CGES投資組合。其次，探討資訊取得成本較低的CGES策略，是否可以比擬ESG投資。將以元大台灣ESG永續發展ETF成分股為基礎，建構8種「模擬的ESG投資組合」並評比之。最後，進行2017年7月至2023年6月的實證研究。從報酬績效觀點來看，實證顯示：80%以上的CGES投資組合，打敗標竿（元大台灣50）；另一方面，CGES和ESG兩組投資組合，在等權與最小變異數策略則各具有優勢。

Keywords

公司治理評鑑 ； ESG ； 財務指標 ； 最小變異數 ； 等權 ； 滾動式抽樣

Parallel abstracts

The aim of Taiwan's Corporate Governance Evaluation System (CGES) is to reward excellent companies and serve as a benchmark. Continual evaluations are expected to improve the ability of companies to respond to environmental, social, and governance (ESG) risks. Accordingly, this study investigates two main questions related to CGES investment. First, do investment portfolios with varying CGES rankings differ? To answer this question, we use rolling sampling across seven CGES rankings, eight financial ratios, and two weighting strategies (averaged weights and minimum variance) to evaluate diverse CGES portfolios. Second, can CGES strategies with relatively low information acquisition costs perform similarly to ESG portfolios? To answer this question, we use the same method to construct eight simulated ESG portfolios by using the constituents of the Yuanta Taiwan ESG Sustainability (00850) exchange-traded fund. We conduct an empirical analysis for the period from July 2017 to June 2023 to examine the monthly returns of TAIEX and OTC companies. In terms of reward performance, the results demonstrate that more than 80% of the CGES portfolios outperform the benchmark (Yuanta Taiwan 50). In addition, the CGES and ESG portfolios exhibit excellent averaged weights and minimum variance, respectively.

Parallel keywords

Corporate Governance Evaluation System ； ESG ； Financial Ratios ； Minimum-variance ； Averaged Weights

References

邱萬益，2020，「臺灣股市局部最小變異數投資組合之績效」，應用經濟論叢，108：165-206。(Chiu, W. Y., 2020, “The Performance of Local Minimum-Variance Portfolio based on Taiwan Stocks”, Taiwan Journal of Applied Economics, 108: 165-206.)

張惠晴、林昆立與張元，2022，「家族傳承與公司績效－企業社會責任的調節作用」，應用經濟論叢，111：121-178。(Chang, H. C., K. L. Lin, and Y. Chang, 2022, “Family Succession and Corporate Performance-The Moderating Effects of Corporate Social Responsibility”, Taiwan Journal of Applied Economics, 111: 121-178.)

梁連文、張海燕與柳君翰，2019，「企業社會責任能使銀行更有成本效率嗎？」，應用經濟論叢，106：109-148。(Liang, L. W., H. Y. Chang, and J. H. Liu, 2019, “Does Corporate Social Responsibility Make Banks More Cost Efficient?”, Taiwan Journal of Applied Economics, 106: 109-148.)

陳賢名、馮鴻璣、林楚雄與王立勳，2015，「報酬偏態、實質選擇權與公司治理」，財務金融學刊，23：1-39。(Chen, H. M., H. G. Fung, C. H. Lin, and L. H. Wang, 2011, “Return Skewness, Real Options, and Corporate Governance”, Journal of Financial Studies, 23: 1-39.)

賴靖宜、董澍琦、楊聲勇與苗建華，2011，「價值投資：財務報表與公開資訊之應用」，證券市場發展季刊，22：123-182。(Lai, J. Y., S. C. Doong, S. Y. Yang, and C. H. Miao, 2011, “Value Investing: An Application of Financial Statement and Public Announcement Information”, Review of Securities and Futures Markets, 22: 123-182.)