History Overview

Permanently deleted user -

The HistoryManager interface allows you to request bar data for daily, weekly, monthly, or greater periods.
If you make requests prior to the close of market, you will not receive a bar for the current day. If your request period spans multiple days then you will receive bar data up to the previous day.

The History Service also provides foreign currency rates for those end-users that are entitled to receive this data. See this KB article for the amount of historical data available.