NNBR vs IIIN vs CMC vs RS vs MLM

For growth investors, Insteel Industries, Inc.

(IIIN) is the stronger pick with 22. 4% revenue growth year-over-year, versus -9. 1% for NN, Inc. (NNBR). Insteel Industries, Inc. (IIIN) offers the better valuation at 12. 9x trailing P/E (16. 6x forward), making it the more compelling value choice. Analysts rate NN, Inc. (NNBR) a "Buy" — based on 9 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, Insteel Industries, Inc.

(IIIN) is the cheapest at 12. 9x versus Commercial Metals Company at 95. 3x. On forward P/E, Commercial Metals Company is actually cheaper at 10. 8x — 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: Reliance Steel & Aluminum Co. wins at 0. 96x versus Martin Marietta Materials, Inc. 's 3. 00x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Commercial Metals Company (CMC) delivered a total return of +127.

3%, compared to -63. 4% for NN, Inc. (NNBR). Over 10 years, the gap is even starker: RS returned +463. 7% versus NNBR's -75. 7%. 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. 75β versus NN, Inc. 's 2. 04β — meaning NNBR is approximately 173% more volatile than RS relative to the S&P 500. On balance sheet safety, Insteel Industries, Inc. (IIIN) carries a lower debt/equity ratio of 1% versus 144% for NN, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Insteel Industries, Inc.

(IIIN) is pulling ahead at 22. 4% versus -9. 1% for NN, Inc. (NNBR). On earnings-per-share growth, the picture is similar: Insteel Industries, Inc. grew EPS 112. 1% year-over-year, compared to -82. 1% for Commercial Metals Company. Over a 3-year CAGR, MLM leads at 2. 0% 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.

Martin Marietta Materials, Inc.

(MLM) is the more profitable company, earning 17. 4% net margin versus -8. 1% for NN, Inc. — meaning it keeps 17. 4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: MLM leads at 23. 3% versus -4. 3% for NNBR. At the gross margin level — before operating expenses — MLM leads at 30. 0%, 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, Reliance Steel & Aluminum Co. (RS) is the more undervalued stock at a PEG of 0. 96x versus Martin Marietta Materials, Inc. 's 3. 00x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Commercial Metals Company (CMC) trades at 10. 8x forward P/E versus 43. 6x for NN, Inc. — 32. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for CMC: 17. 4% to $82. 75.

In this comparison, IIIN (4.

1% yield), RS (1. 3% yield), CMC (1. 0% yield), MLM (0. 5% yield) pay a dividend. NNBR 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. 75), 1. 3% yield, +463. 7% 10Y return). NN, Inc. (NNBR) carries a higher beta of 2. 04 — 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. 7%, NNBR: -75. 7%), 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 (NNBR (Industrials) and IIIN (Industrials) and CMC (Basic Materials) and RS (Basic Materials) and MLM (Basic Materials)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: NNBR is a small-cap quality compounder stock; IIIN is a small-cap high-growth stock; CMC is a small-cap quality compounder stock; RS is a mid-cap quality compounder stock; MLM is a mid-cap quality compounder stock. IIIN, CMC, RS, MLM pay a dividend while NNBR 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.