Download Yahoo Finance Data For Trading and Backtesting

The script downloads 10 years of stock data from Yahoo Finance.

Downloads 10 years worth of daily stock data from yahoo finance. The open, high, low prices are adjusted based on the adjClose field.
The output is saved in csv format in the directory specified by the DIRECTORY parameter.

Example:
Download the data of 5 technology stocks and save the result in the C:\StockData directory:

getyahoo10('AAPL,AMZN,GOOG,IBM,SAP', 'C:\StockData');