A tradable financial asset
A security is a financial asset. It can be identified with exchange symbol Atlas's internal ID. The master asset classification is a default, unchangeable classification of the asset according to Atlas. Users can ascribe their own classifications to securities for reporting purposes.
The master asset classification for a security determines which field holdings of this asset will be tallied in the balances object. For example, holdings of an equity-classified security (EQ) will be included in the
equity_value column in the balances object.