The CQGAccountSummary interface represents statistical information calculated basing on account's positions. Each summary is calculated in a single currency.

The properties of CQGAccountSummary interface which are calculated on the fly are available only when corresponding positions' instruments are subscribed, i.e. instruments of those positions which are included in the calculation of current CQGAccountSummary.
See the usage of CQGAccountSummary object in the AccountChanged event's example section.