Quote from torel:
many thx for the response.
I would like to have aggregated totalview data for some liquid stocks (aggregated volume for each price level) for backtesting and research purposes (market microstructures PhD topic).
As I saw nasdaq makes these historical data available only for redistributors for USD 1000 a month.
As I'm with IB, I only have access to Level 2 snapshots for a limited number of symbols - so buying these data seems to be a better solution for me than collecting them manually.
What data do you collect exactly? Which data provider?