SEI vs PUMP vs ACDC vs WTTR vs NINE

For growth investors, Solaris Energy Infrastructure, Inc.

(SEI) is the stronger pick with 98. 7% revenue growth year-over-year, versus -100. 0% for Nine Energy Service, Inc. (NINE). Select Water Solutions, Inc. (WTTR) offers the better valuation at 84. 1x trailing P/E (41. 7x forward), making it the more compelling value choice. Analysts rate Solaris Energy Infrastructure, Inc. (SEI) 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, Select Water Solutions, Inc.

(WTTR) is the cheapest at 84. 1x versus ProPetro Holding Corp. at 1993. 6x. On forward P/E, Select Water Solutions, Inc. is actually cheaper at 41. 7x.

Over the past 5 years, Solaris Energy Infrastructure, Inc.

(SEI) delivered a total return of +600. 3%, compared to -63. 7% for ProFrac Holding Corp. (ACDC). Over 10 years, the gap is even starker: SEI returned +561. 3% versus ACDC's -63. 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), ProFrac Holding Corp.

(ACDC) is the lower-risk stock at 0. 83β versus Nine Energy Service, Inc. 's 3. 21β — meaning NINE is approximately 289% more volatile than ACDC relative to the S&P 500. On balance sheet safety, ProPetro Holding Corp. (PUMP) carries a lower debt/equity ratio of 30% versus 130% for Solaris Energy Infrastructure, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Solaris Energy Infrastructure, Inc.

(SEI) is pulling ahead at 98. 7% versus -100. 0% for Nine Energy Service, Inc. (NINE). On earnings-per-share growth, the picture is similar: ProPetro Holding Corp. grew EPS 100. 6% year-over-year, compared to -66. 7% for ProFrac Holding Corp.. Over a 3-year CAGR, SEI leads at 24. 8% 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.

Solaris Energy Infrastructure, Inc.

(SEI) is the more profitable company, earning 4. 8% net margin versus -19. 0% for ProFrac Holding Corp. — meaning it keeps 4. 8% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: SEI leads at 21. 8% versus -6. 9% for ACDC. At the gross margin level — before operating expenses — SEI leads at 45. 9%, 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, Select Water Solutions, Inc.

(WTTR) trades at 41. 7x forward P/E versus 49. 5x for Solaris Energy Infrastructure, Inc. — 7. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for NINE: 82. 7% to $18. 00.

In this comparison, WTTR (1.

9% yield), SEI (0. 6% yield) pay a dividend. PUMP, ACDC, NINE do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Select Water Solutions, Inc.

(WTTR) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 1. 09), 1. 9% yield). Nine Energy Service, Inc. (NINE) carries a higher beta of 3. 21 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (WTTR: +26. 6%, NINE: -62. 3%), 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 (SEI (Energy) and PUMP (Energy) and ACDC (Energy) and WTTR (Utilities) and NINE (Energy)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: SEI is a small-cap high-growth stock; PUMP is a small-cap quality compounder stock; ACDC is a small-cap quality compounder stock; WTTR is a small-cap quality compounder stock; NINE is a small-cap quality compounder stock. SEI, WTTR pay a dividend while PUMP, ACDC, NINE 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.