CENX, CSTM, and KALU lead mid-cap materials stocks ranked by quant ratings

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As earnings season comes to a close, investors are shifting focus to updated quant ratings based on the latest corporate results. These scores reflect how companies are positioned across key factors including valuation, growth, profitability, momentum, and earnings revisions following their quarterly reports.

Below is a snapshot of mid-cap materials companies with market capitalizations between $2B and $10B, highlighting those with the highest and lowest quant ratings after the earnings season, underscoring the stocks that strengthened their fundamentals as well as those that lagged.

TOP-QUANT RATED STOCKS:

* Century Aluminum Company (CENX [https://seekingalpha.com/symbol/CENX]), Quant Rating: 4.93, Strong Buy.
* Constellium SE (CSTM [https://seekingalpha.com/symbol/CSTM]), Quant Rating: 4.90, Strong Buy.
* Kaiser Aluminum Corporation (KALU [https://seekingalpha.com/symbol/KALU]), Quant Rating: 4.83, Strong Buy.
* Sibanye Stillwater Limited (SBSW [https://seekingalpha.com/symbol/SBSW]), Quant Rating: 4.71, Strong Buy.
* Perimeter Solutions, Inc. (PRM [https://seekingalpha.com/symbol/PRM]), Quant Rating: 4.31, Buy.

BOTTOM QUANT RATED STOCKS:

* Louisiana-Pacific Corporation (LPX [https://seekingalpha.com/symbol/LPX]), Quant Rating: 1.43, Strong Sell.
* Mondi plc (MONDY [https://seekingalpha.com/symbol/MONDY]), Quant Rating: 1.47, Strong Sell.
* Graphic Packaging Holding Company (GPK [https://seekingalpha.com/symbol/GPK]), Quant Rating: 1.48, Strong Sell.
* Quaker Chemical Corporation (KWR [https://seekingalpha.com/symbol/KWR]), Quant Rating: 1.60, Sell.
* Titan America SA (TTAM [https://seekingalpha.com/symbol/TTAM]), Quant Rating: 1.63, Sell.

MORE ON RELEVANT STOCKS, ETC.

* Century Aluminum: Transformative Earnings Cycle [https://seekingalpha.com/article/4907209-century-aluminum-transformative-earnings-cycle]
* Louisiana-Pacific: A Good Siding Business Offset By A Weak OSB Market [https://seekingalpha.com/article/4905650-louisiana-pacific-good-siding-business-offset-by-weak-osb-market]
* Louisiana-Pacific Corporation 2026 Q1 - Results - Earnings Call Presentation [https://seekingalpha.com/article/4904227-louisiana-pacific-corporation-2026-q1-results-earnings-call-presentation]
* Century Aluminum outlines Q2 adjusted EBITDA of $315M-$335M as Mt. Holly expansion targets full online by end of June [https://seekingalpha.com/news/4589418-century-aluminum-outlines-q2-adjusted-ebitda-of-315m-335m-as-mt-holly-expansion-targets-full]
* Century Aluminum Non-GAAP EPS of $1.63 misses by $0.14, revenue of $649.2M beats by $16.13M [https://seekingalpha.com/news/4589042-century-aluminum-non-gaap-eps-of-1_63-misses-by-0_14-revenue-of-649_2m-beats-by-16_13m]