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Thanks for the reply, I'll check out both of those systems. IB seems to be giving conflicting information. Your link says live links are limited to a total of 100, but this linke: https://interactivebrokers.github.io/tws-api/tws_rtd_server.html#rtd_message_limit says "...a spreadsheet can...

I am trying to pull in options market data for a number of different products. Based on the number of strikes I'm pulling in, if I open the sheet at the beginning of the day, I blow through IB's 50 subscriptions per second limit, and break my market data. I've tried using VBA code to "turn-on"...