Stock Splits, a Survey

45 Pages Posted: 19 Nov 2009

Date Written: March 17, 2009


In this survey paper I summarize the literature's findings on the short-run and long-run effects of stock split announcements as well as what happens in the preceding and subsequent years around a stock split event. I also summarize how firm characteristics influence these results. Furthermore, I discuss the various theories regarding why splits occur and why stock return distributions change subsequent to split events. I specifically focus on the changes in the first and second moments of stock returns and analyze related theories such as optimal trading, optimal tick size, liquidity, and signaling. More importantly I present the pros and cons of each of these theories and discuss which of them are more plausible. I suggest that a combination of the several theories suggested in the literature can rationally explain the return distribution changes around stock splits. I conclude with suggestions for future research.

Keywords: Stock split, stock splits, split ex-date, split announcement, optimal tick size, clientele changes

JEL Classification: G00, G10, G30

Suggested Citation

Yıldızhan, Çelim, Stock Splits, a Survey (March 17, 2009). Available at SSRN: or

Çelim Yıldızhan (Contact Author)

Koç University ( email )

College of Administrative Sciences and Economics
Rumeli Feneri Yolu, Sariyer
Istanbul, 34450

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