WLDN vs TTEK vs PRIM

For growth investors, Willdan Group, Inc.

(WLDN) is the stronger pick with 20. 5% revenue growth year-over-year, versus 4. 7% for Tetra Tech, Inc. (TTEK). Willdan Group, Inc. (WLDN) offers the better valuation at 22. 0x trailing P/E (18. 6x forward), making it the more compelling value choice. Analysts rate Willdan Group, Inc. (WLDN) a "Buy" — based on 7 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, Willdan Group, Inc.

(WLDN) is the cheapest at 22. 0x versus Primoris Services Corporation at 40. 4x. On forward P/E, Willdan Group, Inc. is actually cheaper at 18. 6x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Primoris Services Corporation wins at 1. 85x versus Tetra Tech, Inc. 's 2. 55x — a reasonable growth-adjusted valuation.

Over the past 5 years, Primoris Services Corporation (PRIM) delivered a total return of +520.

0%, compared to +31. 9% for Tetra Tech, Inc. (TTEK). Over 10 years, the gap is even starker: PRIM returned +819. 2% versus TTEK's +465. 6%. 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), Tetra Tech, Inc.

(TTEK) is the lower-risk stock at 0. 53β versus Willdan Group, Inc. 's 1. 96β — meaning WLDN is approximately 266% more volatile than TTEK relative to the S&P 500. On balance sheet safety, Willdan Group, Inc. (WLDN) carries a lower debt/equity ratio of 23% versus 76% for Primoris Services Corporation — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Willdan Group, Inc.

(WLDN) is pulling ahead at 20. 5% versus 4. 7% for Tetra Tech, Inc. (TTEK). On earnings-per-share growth, the picture is similar: Willdan Group, Inc. grew EPS 120. 9% year-over-year, compared to -24. 4% for Tetra Tech, Inc.. Over a 3-year CAGR, TTEK leads at 24. 3% 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.

Willdan Group, Inc.

(WLDN) is the more profitable company, earning 7. 7% net margin versus 3. 6% for Primoris Services Corporation — meaning it keeps 7. 7% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: TTEK leads at 11. 1% versus 5. 5% for PRIM. At the gross margin level — before operating expenses — WLDN leads at 37. 5%, 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, Primoris Services Corporation (PRIM) is the more undervalued stock at a PEG of 1. 85x versus Tetra Tech, Inc. 's 2. 55x. Both stocks trade at elevated growth-adjusted valuations, so expected growth needs to materialise. On forward earnings alone, Willdan Group, Inc. (WLDN) trades at 18. 6x forward P/E versus 33. 9x for Primoris Services Corporation — 15. 3x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for WLDN: 53. 3% to $117. 50.

In this comparison, TTEK (0.

8% yield), PRIM (0. 2% yield) pay a dividend. WLDN does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Tetra Tech, Inc.

(TTEK) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 53), 0. 8% yield, +465. 6% 10Y return). Willdan Group, Inc. (WLDN) carries a higher beta of 1. 96 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (TTEK: +465. 6%, WLDN: +609. 1%), 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: WLDN is a small-cap high-growth stock; TTEK is a small-cap quality compounder stock; PRIM is a mid-cap high-growth stock. TTEK pays a dividend while WLDN, PRIM 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.