Quote from Joetrader:
TAQ data includes all exchanges....although you can break it out. I use bridge for historical data and I am 100% positive that they only use NYSE data for all of their historical data on listed stocks.
I have not checked Bridge yet. Could you do me a favour and see what Bridge notes as the opening price for NKE on the 19th of September 2003. They had some kind of pos announcement and the stock was indicated something like 60-63 at the open by the specialist who eventually opened it at 9:48am with a print of 639k shares at $61.75
All my price sources (nysedata.com, eSignal, yahoo, quote.com) list different opening prices because of numerous trades on ECNs befroe the 9:46 open.
Many thanks,
Oliver
