ASTL vs CAT vs NUE vs RS vs ATI

For growth investors, Nucor Corporation (NUE) is the stronger pick with 5.

7% revenue growth year-over-year, versus -12. 2% for Algoma Steel Group Inc. (ASTL). Reliance Steel & Aluminum Co. (RS) offers the better valuation at 26. 4x trailing P/E (18. 8x forward), making it the more compelling value choice. Analysts rate Algoma Steel Group Inc. (ASTL) a "Buy" — based on 1 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Reliance Steel & Aluminum Co.

(RS) is the cheapest at 26. 4x versus ATI Inc. at 55. 6x. On forward P/E, Nucor Corporation is actually cheaper at 15. 9x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Nucor Corporation wins at 0. 61x versus Caterpillar Inc. 's 1. 32x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, ATI Inc.

(ATI) delivered a total return of +565. 5%, compared to -40. 2% for Algoma Steel Group Inc. (ASTL). Over 10 years, the gap is even starker: CAT returned +1230% versus ASTL's -39. 9%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Reliance Steel & Aluminum Co.

(RS) is the lower-risk stock at 0. 76β versus Algoma Steel Group Inc. 's 2. 15β — meaning ASTL is approximately 184% more volatile than RS relative to the S&P 500. On balance sheet safety, Reliance Steel & Aluminum Co. (RS) carries a lower debt/equity ratio of 28% versus 2% for Caterpillar Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Nucor Corporation (NUE) is pulling ahead at 5.

7% versus -12. 2% for Algoma Steel Group Inc. (ASTL). On earnings-per-share growth, the picture is similar: ATI Inc. grew EPS 11. 8% year-over-year, compared to -392. 9% for Algoma Steel Group Inc.. Over a 3-year CAGR, ATI leads at 6. 1% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Caterpillar Inc.

(CAT) is the more profitable company, earning 13. 1% net margin versus -9. 1% for Algoma Steel Group Inc. — meaning it keeps 13. 1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: CAT leads at 16. 6% versus -12. 0% for ASTL. At the gross margin level — before operating expenses — CAT leads at 32. 3%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, Nucor Corporation (NUE) is the more undervalued stock at a PEG of 0. 61x versus Caterpillar Inc. 's 1. 32x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Nucor Corporation (NUE) trades at 15. 9x forward P/E versus 37. 0x for Caterpillar Inc. — 21. 1x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for ATI: 10. 5% to $175. 00.

In this comparison, ASTL (3.

8% yield), RS (1. 3% yield), NUE (1. 0% yield), CAT (0. 7% yield) pay a dividend. ATI does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Reliance Steel & Aluminum Co.

(RS) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 76), 1. 3% yield, +463. 9% 10Y return). Algoma Steel Group Inc. (ASTL) carries a higher beta of 2. 15 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (RS: +463. 9%, ASTL: -39. 9%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

These companies operate in different sectors (ASTL (Basic Materials) and CAT (Industrials) and NUE (Basic Materials) and RS (Basic Materials) and ATI (Industrials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: ASTL is a small-cap income-oriented stock; CAT is a large-cap quality compounder stock; NUE is a mid-cap quality compounder stock; RS is a mid-cap quality compounder stock; ATI is a mid-cap quality compounder stock. ASTL, CAT, NUE, RS pay a dividend while ATI does not, making them suitable for different income and tax situations. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.