Top 3 Materials Stocks That May Plunge This Month - AptarGroup (NYSE:ATR), Koppers Holdings (NYSE:KOP)

As of Feb. 23, 2026, three stocks in the materials sector could be flashing a real warning to investors who value momentum as a key criteria in their trading decisions.Here's the latest list of major overbought players in this sector.Stepan Co (NYSE:SCL)Koppers Holdings Inc. (NYSE:KOP)On Feb. 11, Koppers raised its quarterly dividend from 8 cents to 9 cents per share. The company's stock gained around 21% over the past month and has a 52-week high of $35.70.RSI Value: 81.2KOP Price Action: Shares of Koppers ...