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How does Interactive Broker's historical data compare to other alternatives?

Has any of you stumbled with shows stopper problems like it having survivorship bias?
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191 views

Where can I get real-time equity options quotes for a reasonable price (i am not a company) besides screen scrapping Yahoo! Finance? [duplicate]

Want to have electronic access to equity options quotes in real-time. Is there anyone offering this service to the individual investor for a reasonable price? Again it must be electronic, in other ...
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Data feed that shows individual orders

Does anyone know how I can obtain time and sales data for a stock? Lots of feeds provide the total volume but I would like to see the breakdown of what buy/sell orders made up the day's volume. I ...