Unavailable Historical Data
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The other historical data limitations listed are general limitations for all trading platforms:
Bars which size is 30 seconds or less older than six months
Expired futures data older than two years counting from the future's expiration date.
Expired options, FOPs, warrants and structured products.
End of Day (EOD) data for options, FOPs, warrants and structured products.
Data for expired future spreads
Data for securities which are no longer trading.
Native historical data for combos. Historical data is not stored in the IB database separately for combos.; combo historical data in TWS or the API is the sum of data from the legs.
Historical data for securities which move to a new exchange will often not be available prior to the time of the move.