The Wolfram Language can collect, process, and display data dynamically and in real time. A large collection of curated data is built into the Wolfram Language, which puts an extraordinary amount of information at your fingertips.
Use FinancialData to get the latest GE stock price:
For added clarity, you can include a time stamp to display when the price was retrieved. In the list before the price, the time stamp shows the year, month, day, hour, minute, and second that the price was retrieved:
Because the UpdateInterval is hard coded, the update happens even when the price does not change.
Now, as long as this output is visible, the latest GE stock price will be appended to data. The TrackedSymbols option is necessary to prevent the dynamic evaluation from triggering when saving the price values.
As data becomes larger, this visualization can potentially take a long time to render. Dynamic evaluations have a six-second time out by default. You can override this by setting the SynchronousUpdating option to False: