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Hi Julius --

I use Interactive Brokers as a trading platform and like them.  I use their real-time data during the trading day, but I do not use their data to store in my real-time database for use in trading system development.

If you plan to build intraday bars, I recommend using a vendor of real-time quotes rather than / other than Interactive Brokers.  IB sends data for only a portion of all trades.

Thanks,

Howard