In a welcome move, Six Flags Entertainment saw its Relative Strength Rating improve from 69 to 76 on Tuesday.

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

IBD's proprietary rating measures market leadership with a 1 (worst) to 99 (best) score. The grade shows how a stock's price movement over the trailing 52 weeks holds up against all the other stocks in our database.

Decades of market research reveals that the stocks that go on to make the biggest gains typically have an RS Rating north of 80 as they launch their biggest climbs. See if Six Flags Entertainment can continue to rebound and clear that threshold.

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Six Flags Entertainment is trying to complete a consolidation with a 51.85 buy point. See if the stock can clear the breakout price in volume at least 40% higher than normal.

In terms of revenue and profits, Six Flags Entertainment has posted two quarters of increasing earnings growth. Sales gains have also risen over the same time frame.

Six Flags Entertainment earns the No. 14 rank among its peers in the Leisure-Services industry group. WarnerM and Endeavor Group are also among the group's highest-rated stocks.