3 stars, will raise to 4 or 5 if the next update improves/adds.

StockSpy certainly allows you to spy on daily movements or fluctuations in stocks, but it lacks support for currencies, options, and key financial information. If such features were added or improved upon, then StockSpy would return greater efficiency and provide a better overall experience for its user. In addition, a ticker would be nice GUI feature.

BMO320 about StockSpy Realtime Stock Market