A simple fake stock ticker sample for SignalR. Contribute to SignalR/SignalR-StockTicker development by creating an account on GitHub. C# .NET Yahoo Stock Download and Charting. How to download stock price history data from Yahoo finance, store in a SQLite database, and make nice stock charts from same. As a stockbroker and commodities trader in a former life, I've never lost my fascination with the markets. This little application I "whipped up" features a class that will The HandleSell method of the Portfolio object has a little more work.This method needs to find the stock being sold in the existing portfolio and deduct the number of shares from the total of existing shares of that stock. It must then deduct the commission and add the value of the stock transaction to the existing cash.