This article discusses problems with proposed methods to estimate firm specific marginal q-ratios, where marginal q measures the value impact of new investment. The article concludes that suggested methods are likely to produce biased estimates since they fail to separate fluctuations in the...

The relationship is analysed between conditional stock market volatility and macroeconomic volatility using monthly data for Finland from 1920 to 1991. Conditional monthly volatility is measured as simple weighted moving averages, and also obtained from GARCH estimations. The results are...