AMRC vs MYRG vs PWR vs TTEK

For growth investors, Quanta Services, Inc.

(PWR) is the stronger pick with 19. 8% revenue growth year-over-year, versus 4. 7% for Tetra Tech, Inc. (TTEK). Tetra Tech, Inc. (TTEK) offers the better valuation at 33. 0x trailing P/E (20. 0x forward), making it the more compelling value choice. Analysts rate Ameresco, Inc. (AMRC) a "Buy" — based on 23 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, Tetra Tech, Inc.

(TTEK) is the cheapest at 33. 0x versus Quanta Services, Inc. at 110. 4x. On forward P/E, Tetra Tech, Inc. is actually cheaper at 20. 0x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Tetra Tech, Inc. wins at 2. 47x versus Quanta Services, Inc. 's 3. 33x.

Over the past 5 years, Quanta Services, Inc.

(PWR) delivered a total return of +651. 1%, compared to -44. 0% for Ameresco, Inc. (AMRC). Over 10 years, the gap is even starker: PWR returned +31. 4% versus TTEK's +450. 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), Tetra Tech, Inc.

(TTEK) is the lower-risk stock at 0. 53β versus Ameresco, Inc. 's 2. 03β — meaning AMRC is approximately 279% more volatile than TTEK relative to the S&P 500. On balance sheet safety, Quanta Services, Inc. (PWR) carries a lower debt/equity ratio of 13% versus 173% for Ameresco, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Quanta Services, Inc.

(PWR) is pulling ahead at 19. 8% versus 4. 7% for Tetra Tech, Inc. (TTEK). On earnings-per-share growth, the picture is similar: MYR Group Inc. grew EPS 311. 5% 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.

Tetra Tech, Inc.

(TTEK) is the more profitable company, earning 4. 6% net margin versus 2. 3% for Ameresco, Inc. — meaning it keeps 4. 6% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: TTEK leads at 11. 1% versus 4. 4% for MYRG. At the gross margin level — before operating expenses — TTEK leads at 17. 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, Tetra Tech, Inc. (TTEK) is the more undervalued stock at a PEG of 2. 47x versus Quanta Services, Inc. 's 3. 33x. Both stocks trade at elevated growth-adjusted valuations, so expected growth needs to materialise. On forward earnings alone, Tetra Tech, Inc. (TTEK) trades at 20. 0x forward P/E versus 57. 4x for Quanta Services, Inc. — 37. 4x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for AMRC: 45. 5% to $43. 17.

In this comparison, TTEK (0.

8% yield) pays a dividend. AMRC, MYRG, PWR do 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, +450. 1% 10Y return). Ameresco, Inc. (AMRC) carries a higher beta of 2. 03 — 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: +450. 1%, AMRC: +542. 4%), 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: AMRC is a small-cap quality compounder stock; MYRG is a small-cap quality compounder stock; PWR is a mid-cap high-growth stock; TTEK is a small-cap quality compounder stock. TTEK pays a dividend while AMRC, MYRG, PWR 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.