Unexplained Volume as a Critical Indicator
November 15, 2005 - Technical Trading
Researchers have recently focused on divergence of investor opinion as an indicator of future stock returns, but measuring this divergence using publicly available data has been problematic. In his April 2005 paper entitled “Measuring Investors’ Opinion Divergence”, Jon Garfinkel uses a non-public indicator of the stock valuations of investors to validate four public indicators: bid-ask spread, unexplained volume, forecast variability among analysts and stock return volatility. His non-public indicator is the standard deviation of the differences between all limit order prices and the most recent trade price, capturing actual investor price targets. Using data from 1995-1996 for the one non-public and four public indicators and focusing on activities before and after 150 selected NYSE trading halts, he concludes that: Keep Reading