Canadian Natural Resources had its Relative Strength (RS) Rating upgraded from 80 to 84 Tuesday.

When looking for the best stocks to buy and watch, one factor to watch closely is relative price strength.

This unique rating measures market leadership by showing how a stock's price action over the last 52 weeks measures up against that of other stocks on the major indexes.

History shows that the stocks that go on to make the biggest gains often have an RS Rating north of 80 in the early stages of their moves.

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Canadian Natural Resources is working on a cup with handle with a 35.20 entry. See if it can clear the breakout price in heavy volume.

Canadian Natural Resources saw both earnings and sales growth rise last quarter. Earnings-per-share increased from 0% to 290%. Revenue rose from 47% to 127%.

The company earns the No. 2 rank among its peers in the Oil & Gas-Canadian Exploration & Production industry group. and are also among the group's highest-rated stocks.