trading volume on SPY
Posted: March 14th, 2013, 12:50 pm
the volume of trade (# of trades) has been growing past 20 years. is it because of the number of traders increased or because the traders trade more?i know both are happening, but which one's a dominating factor? also does the HFT contribute into volume of trade on exchanges? or do their trades count into only dark pools and other shadowy activities?