Zero-investment Portfolio Strategy and Excess Returns in ESG100 Stocks

Parichat Sinlapates and Thawaree Chinnasaeng

A chapter in Comparative Analysis of Trade and Finance in Emerging Economies, 2023, vol. 31, pp 51-66 from Emerald Group Publishing Limited

Abstract: This study aims to investigate whether the zero-investment portfolio strategy generates higher excess returns for all listed companies in the Stock Exchange of Thailand (SET) or ESG100 stocks. The study period is from January 2016 to December 2020, a total of 60 months. The dividend yield is employed for categorizing the stock into value and growth stocks. The strategy of buying value stocks and short-selling growth stocks is then applied. The results show that investing using the zero-investment portfolio strategy can generate higher returns in an investment portfolio that consists of ESG100 stocks than in an investment portfolio that consists of all stocks in the SET. The optimal holding periods for investing in portfolios that consist of stocks in the SET are 6 months, 9 months, and 12 months, and the optimal holding periods for a portfolio that consists of ESG100 stocks is 6 months. To explain excess returns of stocks in the SET, theFama and French (2015) five-factor model is employed. There is no relation between risk factors and excess returns for the holding period of 6 months and 12 months. However, excess return is found to have a negative relation with the market risk premium factor for a 9-month holding period. The excess returns of ESG100 stocks are also inversely correlated with investment factors for a holding period of 6 months.

Keywords: Trading strategy; holding period; ESG100 stocks; zero investment portfolio strategy; excess returns; G1; G11 (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eme:isetez:s1571-038620230000031007

DOI: 10.1108/S1571-038620230000031007

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