The names of extra Attributes of Inventory item are the same as used by GetFnData functionality and they're detailed in detail in OLE objects reference. This is because IB feed wasn't built as tick-by-tick and hardly ever meant to make time&profits collection, but alternatively solely to update TWS Show https://amibrokerdata20741.aboutyoublog.com/29973481/data-feed-for-amibroker-an-overview