By keeping a carefully managed investment portfolio, you will also get better control of your long-term investment gains. The most secure investments are those that take place over years, or even decades since they are generally the least volatile. Though you might find that some investments are performing while others are not, and would like to get rid of those that are making you a loss. While chopping and changing during long-term investments is never the best idea, it is often a good idea to protect long-term investment
gains; and with a portfolio at your fingers, it is easy to see where shares are performing well, and where they are making a loss.