The Relative Strength (RS) Rating for Arch Capital entered a new percentile Wednesday, as it got a lift from 70 to 73.

When looking for the best stocks to buy and watch, keep a close on eye on relative price strength.

This unique rating tracks market leadership by using a 1 (worst) to 99 (best) score that shows how a stock's price performance over the trailing 52 weeks matched up against all other stocks.

Over 100 years of market history shows that the market's biggest winners tend to have an RS Rating of over 80 in the early stages of their moves. See if Arch Capital can continue to show renewed price strength and clear that threshold.

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Arch Capital is trying to complete a cup without handle with a 42.64 buy point. See if it can clear the breakout price in volume at least 40% higher than normal.

While revenue growth fell last quarter from 49% to 12%, earnings-per-share grew 2,400%, up from 28% in the previous report. Keep an eye out for the company's next round of numbers on or around Oct. 29.

The company earns the No. 10 rank among its peers in the Insurance-Property/Casualty/Title industry group. First American Financial and Fidelity National Finl are also among the group's highest-rated stocks.