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The purpose of this paper is to investigate how institutional ownership is related to the stock return volatility of initial public offerings (IPOs) in an emerging market and to examine the relationship between institutional ownership and underpricing.Design/methodology/approachThis paper investigates these relationships using White’s (1980) regression and 2 × 3 portfolios sorted by firm size and institutional holdings. The regression method examines the relationships across firms with different characteristics such as size, stock price, growth potential, firm age and type of investors. The data were chosen for this sample to cover the new equity issuances listed on the Thailand Stock Exchange for the period 2001–2019.FindingsThe empirical results suggest that institutional ownership is negatively associated with initial stock return volatility. This highlights the importance of institutional investors in maintaining stability in emerging stock markets. Additionally, it was found that institutional holding and underpricing are negatively correlated. The results are robust after controlling for potential heteroskedasticity and differences in firm characteristics.Originality/valueTo the best knowledge of the author, this paper is the first to study the relationship between institutional investors and volatility in Thai IPOs, and hence provides a deeper understanding of how investors influence the price formation and volatility of stock prices in emerging markets. Furthermore, besides academics, the results presented in this paper could be useful for market regulators and policymakers in designing future market regulations to efficiently stabilize equity markets.
Pacific Accounting Review – Emerald Publishing
Published: Dec 11, 2020
Keywords: Volatility; Institutional investors; Information asymmetry; G14; G23; G32
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