i use it to down load one min intraday data as textual content documents for a particular listing of stocks, each evening. + IB API mistake information 165 is applied now to detect whenever backfill is offered or not (demo account for example doesn't offer you backfill) AmiBroker is https://josueqspol.blogolize.com/5-easy-facts-about-data-feed-for-amibroker-described-68384769