When considering what names to put on your watch list, focus on stocks with an 80 or higher RS Rating. Flex now meets that criteria, with a jump from 77 to 81 Wednesday.

When you're researching the best stocks to buy and watch, keep a close on eye on relative price strength.

This exclusive rating from Investor's Business Daily tracks share price action with a 1 (worst) to 99 (best) score. The score shows how a stock's price behavior over the trailing 52 weeks compares to all the other stocks in our database.

Over 100 years of market history shows that the best-performing stocks tend to have an RS Rating of above 80 as they begin their biggest price moves.

See How IBD Helps You Make More Money In Stocks

Flex is trying to complete a consolidation with a 20.14 entry. See if it can break out in heavy volume.

In terms of top and bottom line numbers, Flex has posted four quarters of increasing earnings growth. Sales gains have also increased over the same time frame.

Flex earns the No. 2 rank among its peers in the Electronics-Contract Manufacturing industry group. Flex and Fabrinet are also among the group's highest-rated stocks.