Short-selling is an important tool that keeps the markets balanced. Every stock is a target -- even the 30 elite tickers on the Dow Jones Industrial Average (^DJI 0.56%). But some see more shorting than others.

Should you buy or sell General Electric (GE -3.19%) and Boeing (BA -0.24%) today, based on the short-sales action? How about Verizon (VZ 0.90%) and Intel (INTC -2.40%)?

In the video below, Fool analyst Anders Bylund presents two of the most shorted Dow stocks and two of the least shorted. Then he shows you how to interpret the shorting data. The answers might surprise you.