DCO vs SPR vs TDG vs KTOS vs DRS

For growth investors, Kratos Defense & Security Solutions, Inc.

(KTOS) is the stronger pick with 18. 5% revenue growth year-over-year, versus 4. 4% for Spirit AeroSystems Holdings, Inc. (SPR). TransDigm Group Incorporated (TDG) offers the better valuation at 37. 9x trailing P/E (30. 6x forward), making it the more compelling value choice. Analysts rate Ducommun Incorporated (DCO) a "Buy" — based on 20 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, TransDigm Group Incorporated (TDG) is the cheapest at 37.

9x versus Kratos Defense & Security Solutions, Inc. at 445. 3x. On forward P/E, TransDigm Group Incorporated is actually cheaper at 30. 6x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: TransDigm Group Incorporated wins at 0. 98x versus Leonardo DRS, Inc. 's 2. 59x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Leonardo DRS, Inc.

(DRS) delivered a total return of +249. 3%, compared to -11. 6% for Spirit AeroSystems Holdings, Inc. (SPR). Over 10 years, the gap is even starker: DRS returned +54. 0% versus SPR's -11. 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), Spirit AeroSystems Holdings, Inc.

(SPR) is the lower-risk stock at 0. 68β versus Kratos Defense & Security Solutions, Inc. 's 1. 87β — meaning KTOS is approximately 174% more volatile than SPR relative to the S&P 500. On balance sheet safety, Ducommun Incorporated (DCO) carries a lower debt/equity ratio of 7% versus 17% for Leonardo DRS, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Kratos Defense & Security Solutions, Inc.

(KTOS) is pulling ahead at 18. 5% versus 4. 4% for Spirit AeroSystems Holdings, Inc. (SPR). On earnings-per-share growth, the picture is similar: Leonardo DRS, Inc. grew EPS 28. 7% year-over-year, compared to -208. 4% for Spirit AeroSystems Holdings, Inc.. Over a 3-year CAGR, TDG leads at 17. 6% 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.

TransDigm Group Incorporated (TDG) is the more profitable company, earning 23.

5% net margin versus -33. 9% for Spirit AeroSystems Holdings, Inc. — meaning it keeps 23. 5% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: TDG leads at 47. 2% versus -28. 3% for SPR. At the gross margin level — before operating expenses — TDG leads at 60. 1%, 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, TransDigm Group Incorporated (TDG) is the more undervalued stock at a PEG of 0. 98x versus Leonardo DRS, Inc. 's 2. 59x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, TransDigm Group Incorporated (TDG) trades at 30. 6x forward P/E versus 76. 4x for Kratos Defense & Security Solutions, Inc. — 45. 9x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for KTOS: 89. 3% to $109. 58.

In this comparison, TDG (13.

6% yield), DRS (0. 9% yield) pay a dividend. DCO, SPR, KTOS do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, TransDigm Group Incorporated (TDG) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

79), 13. 6% yield, +583. 3% 10Y return). Kratos Defense & Security Solutions, Inc. (KTOS) carries a higher beta of 1. 87 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (TDG: +583. 3%, KTOS: +1253%), 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.

Both stocks operate in the Industrials sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: DCO is a small-cap quality compounder stock; SPR is a small-cap quality compounder stock; TDG is a mid-cap income-oriented stock; KTOS is a mid-cap high-growth stock; DRS is a mid-cap quality compounder stock. TDG, DRS pay a dividend while DCO, SPR, KTOS 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.