Summary on the Semistrong-Form EMH Clearly, the evidence from tests of the semistrong
EMH is mixed. The hypothesis receives almost unanimous support from the numerous
event studies on a range of events including stock splits, initial public offerings, world events and
economic news, accounting changes, and a variety of corporate finance events. About the only
mixed results come from exchange listing studies.
In sharp contrast, the numerous studies on predicting rates of return over time or for a cross
section of stocks presented evidence counter to semistrong efficiency. This included time-series
studies on risk premiums, calender patterns, and quarterly earnings surprises. Similarly, the
results for cross-sectional predictors such as size, the BV/MV ratio (when there is expansive
monetary policy), P/E ratios, and some neglected firm studies indicated nonefficiencies.
Sedang diterjemahkan, harap tunggu..
