KALU vs ATI vs HWM vs AA

For growth investors, Kaiser Aluminum Corporation (KALU) is the stronger pick with 11.

5% revenue growth year-over-year, versus 4. 5% for Alcoa Corporation (AA). Alcoa Corporation (AA) offers the better valuation at 14. 1x trailing P/E (9. 0x forward), making it the more compelling value choice. Analysts rate ATI Inc. (ATI) a "Buy" — based on 29 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, Alcoa Corporation (AA) is the cheapest at 14.

1x versus Howmet Aerospace Inc. at 73. 5x. On forward P/E, Alcoa Corporation is actually cheaper at 9. 0x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Kaiser Aluminum Corporation wins at 0. 62x versus Howmet Aerospace Inc. 's 1. 16x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Howmet Aerospace Inc.

(HWM) delivered a total return of +715. 2%, compared to +40. 7% for Kaiser Aluminum Corporation (KALU). Over 10 years, the gap is even starker: HWM returned +1240% versus KALU's +135. 1%. 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), Howmet Aerospace Inc.

(HWM) is the lower-risk stock at 0. 93β versus Alcoa Corporation's 1. 77β — meaning AA is approximately 90% more volatile than HWM relative to the S&P 500. On balance sheet safety, Alcoa Corporation (AA) carries a lower debt/equity ratio of 0% versus 136% for Kaiser Aluminum Corporation — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Kaiser Aluminum Corporation (KALU) is pulling ahead at 11.

5% versus 4. 5% for Alcoa Corporation (AA). On earnings-per-share growth, the picture is similar: Alcoa Corporation grew EPS 1486% year-over-year, compared to 11. 8% for ATI Inc.. Over a 3-year CAGR, HWM leads at 13. 4% 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.

Howmet Aerospace Inc.

(HWM) is the more profitable company, earning 18. 3% net margin versus 3. 3% for Kaiser Aluminum Corporation — meaning it keeps 18. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: HWM leads at 25. 8% versus 5. 7% for KALU. At the gross margin level — before operating expenses — HWM leads at 30. 7%, 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, Kaiser Aluminum Corporation (KALU) is the more undervalued stock at a PEG of 0. 62x versus Howmet Aerospace Inc. 's 1. 16x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Alcoa Corporation (AA) trades at 9. 0x forward P/E versus 58. 7x for Howmet Aerospace Inc. — 49. 7x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for AA: 9. 9% to $68. 80.

In this comparison, KALU (1.

8% yield), AA (0. 6% yield), HWM (0. 2% yield) pay a dividend. ATI does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Howmet Aerospace Inc.

(HWM) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 93), +1240% 10Y return). Alcoa Corporation (AA) carries a higher beta of 1. 77 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (HWM: +1240%, AA: +203. 5%), 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 (KALU (Basic Materials) and ATI (Industrials) and HWM (Industrials) and AA (Basic Materials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: KALU is a small-cap quality compounder stock; ATI is a mid-cap quality compounder stock; HWM is a mid-cap quality compounder stock; AA is a mid-cap deep-value stock. KALU, AA pay a dividend while ATI, HWM do 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.