Stocks@Insiders is a great tool for investors to check real-time insider transactions of a particular stock or a portfolio. It also gives some insider-based trading strategies such as "Insider Buy Near 52 Week Low" and "Insider Buy Near 52 Week High".
This is a must-have app for serious traders as well as investors. Real-time trading transactions give traders upper-hand information before other traders. Investors can check insider actions on all stocks of their portfolio in one screen.
Insider trading trends of a particular stock are also shown in the yearly insider trading summary.