Stock Market Volume Drop Aberration, Watch SEC Dark Pool Rule Says Tabb

While stock market exchange trade volume dropped by 7.1 billion shares from a volatile September to a rising market in October, a move that can be anticipated with declining volatility, don’t be deceived by the large year-over-year trade volume decrease says Tabb Group Analyst Valerie Bogard. A one-time aberration in October 2014 was causation for the year-over-year volume drop that was not correlated to the smallest industry trade size in 10 years for October 2015. What really could matter is a change in dark pool leadership and new proposed SEC rules that require dark pools to provide investors transparency. Year-over-year trading…