Get access

Volatility increases Subsequent to NYSE and AMEX Stock Splits

Authors

  • DAVID A. DUBOFSKY

    Search for more papers by this author
    • Associate Professor, Texas A&M University. The author thanks S. Kannan, S. Lummer, A. Mahajan, D. Mayers, R. Stulz, and an anonymous referee for helpful comments.

ABSTRACT

The post-split increase in daily returns volatility is less for AMEX stocks than for NYSE stocks. The exchange trading location is a significant factor in explaining the volatility shift even after stock price and firm size are considered. Furthermore, when measured on a weekly basis, there is no increase in AMEX stocks' returns volatility. These results suggest that measurement errors created by bid-ask spreads and the 1/8 effect, and also one or more of the elements that make the NYSE different from the AMEX, explain why the estimated volatility of daily stock returns increases after the ex split date.

Get access to the full text of this article

Ancillary