For example, you can get the stock quote for Microsoft by entering =StockQuote("MSFT") within the file.
It also comes with other custom-built formulas such as StockChange, StockDaysLow, StockDaysHigh, StockYearLow, StockYearHigh, and StockVolume.
You can refresh the quotes and price changes throughout the trading hours of the day by pressing F9, which is the shortcut key for recalculation. There's also a button in the file that can automatically refresh the quotes every minute at the first second of each minute.
R | Trader Pro™ has a mechanism to stream real-time market data into Microsoft Office Excel. R | Trader Pro™ also enables you to get real-time US equity market data from EDGX - for free.