Quote from jlcarey1:
Take a look at DTN real-time feed via satellite. We have been using it for about 2.5 years now and we are very satisfied.
Quote from hyperblob:
(1) Do data feed vendors such as eSignal get notifications by the exchanges after trades are busted or re-priced?
(2) If the answer to question (1) is yes, does eSignal adjust the historical intraday data by filtering out bad ticks?
If the answer to question (1) is no, does eSignal employ any other filtering approach regarding historical intraday data?
Quote from hyperblob:
Raw data is fine for live streaming quotes.
But for historical minute data? How can you implement your own filtering? It's not possible!