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Volatility increases Subsequent to NYSE and AMEX Stock Splits
Author(s) -
DUBOFSKY DAVID A.
Publication year - 1991
Publication title -
the journal of finance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 18.151
H-Index - 299
eISSN - 1540-6261
pISSN - 0022-1082
DOI - 10.1111/j.1540-6261.1991.tb03759.x
Subject(s) - volatility (finance) , stock (firearms) , economics , stock exchange , financial economics , econometrics , monetary economics , finance , geography , archaeology
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.