#http://www.eoddata.com/stockList/NASDAQ.htm


Client account £$
  buy stock @ market rate
  sell stock

  [Portfolio]
  contains stock

    [Stock] - name of stocks and quantity





  #Create an account for client (name, balance).
  #Every client can create multiple portfolios.

***************
A client can buy stocks at market rate; these stocks will be added to a portfolio and the purchase amount subtracted from cash. (You cannot go to a negative cash balance).

A client can sell a stock. The proceeds go into his account.
****************

  #List all client portfolios and their values
  (each portfolio value and sum of portfolio values) and

the account balance.

  #List all stocks in a portfolio.

  #List all clients.

Note:

Each time a portfolio balance is calculated, the program needs to go out to the web and get current stock prices.













yahoofinance gem:

YahooFinance::get_quotes(YahooFinance::StandardQuote, 'AAPL')['AAPL'].lastTrade

=> 453.62