Investments can be either opened directly, or by opening a portfolio that contains these investments.
To open investments directly use the Open Investment(s)... menu command. This menu command is available from the top level File menu or from many popup menus, such as when you right mouse click on a portfolio in the Portfolio Editor. You can also select the button from the toolbar. You can select one or more investments to open. Use the Ctrl and Shift keys to select multiple investments.
To open investments that are included in a portfolio, open the portfolio with the Open Portfolio... command under any top level File menu. For more information on investments in portfolios see About Portfolios.