
In the words of Ben Graham, arguably one of the most successful investors of all time, "The investor's chief problem – even his worst enemy – is likely to be himself." As Graham and decades of research have uncovered, most investors fall victim to their own emotional and irrational behavior based largely on the short-term outcomes of their investment decisions. The failure to adhere to a long-term strategy steeped in sound principles and practices results in a haphazard approach to investing that invariably leads to costly mistakes.
Here are the most common blunders we often see investors make.