As of May 26, 2026, two stocks in the materials sector could be flashing a real warning to investors who value momentum as a key criteria in their trading decisions.

The RSI is a momentum indicator, which compares a stock’s strength on days when prices go up to its strength on days when prices go down. When compared to a stock’s price action, it can give traders a better sense of how a stock may perform in the short term. An asset is typically considered overbought when the RSI is above 70, according to Benzinga Pro.

Here's the latest list of major overbought players in this sector.

SunCoke Energy Inc (NYSE:SXC)

  • On April 30, SunCoke Energy posted mixed quarterly results. “We are pleased with our performance in the first quarter, as we continued our seamless integration of Phoenix and executed on our operating plans,” said Katherine Gates, President and CEO of SunCoke Energy, Inc. The company's stock gained around 28% over the past month and has a 52-week high of $8.98.
  • RSI Value: 82.1                                
  • SXC Price Action: Shares of SunCoke Energy gained 3.8% to close at $8.40 on Friday.
  • Edge Stock Ratings: 74.59 Momentum score.

Newmarket Corp (NYSE:NEU)

  • On April 22, NewMarket posted a decline in first-quarter earnings and sales results. The company's stock gained around 8% over the past five days and has a 52-week high of $875.97.
  • RSI Value: 77
  • NEU Price Action: Shares of Newmarket gained 2.4% to close at $737.72 on Friday.

Learn more about BZ Edge Rankings—click to see scores for other stocks in the sector and see how they compare.

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