A representation of a Security.

Attributes
[R] close_price

The Numeric close price.
[R] close_price_as_of

The String date when the close price was current.
[R] cusip

The String CUSIP identitfier of this security.
[R] institution_id

The String institution ID (if #institution_security_id is set).
[R] institution_security_id

The String ID of this security as reported by the institution.
[R] is_cash_equivalent

The Boolean flag indicating whether this security is cash-equivalent.
[R] isin

The String ISIN identifier of this security.
[R] iso_currency_code

The ISO currency code of the security, either USD or CAD. Always nil if #unofficial_currency_code is non-nil.
[R] name

The String security name.
[R] proxy_security_id

The String security ID of the proxied security.
[R] security_id

The String security ID.
[R] sedol

The String SEDOL identifier of this security.
[R] ticker_symbol

The String ticker symbol.
[R] type

The String Type.
[R] unofficial_currency_code

The unofficial currency code associated with the security. Always nil if #iso_currency_code is non-nil.