Stock Portfolio

Stock Portfolio is a
direct subtype of Portfolio with functions Stock Portfolio Functions, keys Stock Portfolio keys and example object StkPrtfl that represents a portfolio of stocks equiped with a common text label that identifies a possibly wider family of which they are members.
The common text label is supplied through the
Class entry.
The pricing requires the input of the respective stock spot prices supplied through one or more objects of type
Stock Prices, the Class of which must match that of the portfolio here.