PSIX vs PESI vs GNRC vs CWST vs CMI

For growth investors, Casella Waste Systems, Inc.

(CWST) is the stronger pick with 18. 0% revenue growth year-over-year, versus -100. 0% for Power Solutions International, Inc. (PSIX). Power Solutions International, Inc. (PSIX) offers the better valuation at 14. 6x trailing P/E (15. 1x forward), making it the more compelling value choice. Analysts rate Power Solutions International, Inc. (PSIX) a "Buy" — based on 6 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, Power Solutions International, Inc.

(PSIX) is the cheapest at 14. 6x versus Casella Waste Systems, Inc. at 712. 1x. On forward P/E, Power Solutions International, Inc. is actually cheaper at 15. 1x.

Over the past 5 years, Power Solutions International, Inc.

(PSIX) delivered a total return of +1080%, compared to -18. 5% for Generac Holdings Inc. (GNRC). Over 10 years, the gap is even starker: CWST returned +1059% versus PESI's +178. 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), Casella Waste Systems, Inc.

(CWST) is the lower-risk stock at 0. 32β versus Power Solutions International, Inc. 's 3. 33β — meaning PSIX is approximately 933% more volatile than CWST relative to the S&P 500. On balance sheet safety, Perma-Fix Environmental Services, Inc. (PESI) carries a lower debt/equity ratio of 9% versus 85% for Power Solutions International, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Casella Waste Systems, Inc.

(CWST) is pulling ahead at 18. 0% versus -100. 0% for Power Solutions International, Inc. (PSIX). On earnings-per-share growth, the picture is similar: Power Solutions International, Inc. grew EPS 64. 1% year-over-year, compared to -50. 1% for Generac Holdings Inc.. Over a 3-year CAGR, CWST leads at 19. 2% 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.

Power Solutions International, Inc.

(PSIX) is the more profitable company, earning 21. 5% net margin versus -22. 3% for Perma-Fix Environmental Services, Inc. — meaning it keeps 21. 5% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: PSIX leads at 20. 7% versus -19. 0% for PESI. At the gross margin level — before operating expenses — GNRC leads at 38. 3%, 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.

On forward earnings alone, Power Solutions International, Inc.

(PSIX) trades at 15. 1x forward P/E versus 63. 9x for Casella Waste Systems, Inc. — 48. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for PESI: 61. 1% to $18. 00.

In this comparison, CMI (1.

1% yield) pays a dividend. PSIX, PESI, GNRC, CWST do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Casella Waste Systems, Inc.

(CWST) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 32), +1059% 10Y return). Perma-Fix Environmental Services, Inc. (PESI) carries a higher beta of 1. 85 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (CWST: +1059%, PESI: +178. 6%), 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: PSIX is a small-cap deep-value stock; PESI is a small-cap quality compounder stock; GNRC is a mid-cap quality compounder stock; CWST is a small-cap high-growth stock; CMI is a mid-cap quality compounder stock. CMI pays a dividend while PSIX, PESI, GNRC, CWST 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.