1.   The study also found that female investors tended to be less optimistic than men.

2.   Such investors tended to come in when stocks were exchanged rather than present themselves at the moment of initiation.

3.   Another common mistake investors tend to make is they give money to an adviser and then forget about it, according to AdvisorLink.

4.   As is the case with many stocks that are touted on the Internet, investors tend to rely too much on cyberspace information instead of doing proper research.

5.   As rates fall, investors tend to accept greater risk in their search for higher yields.

6.   At the first sign of trouble, investors across Latin America tend to flee to dollars.

7.   Bond investors tend to fear that vigorous growth will lead to inflation that will erode the value of their fixed-income investments.

8.   But when rates rise, investors tend to sell utilities stocks for higher returns, such as those offered by bonds.

9.   But they just as often can be horrible clunkers that investors tend to block out of their minds.

10.   Conversely, investors tend to sell their winners.