AROC vs XOM vs KMI vs WMB

For growth investors, Archrock, Inc.

(AROC) is the stronger pick with 28. 7% revenue growth year-over-year, versus -4. 5% for Exxon Mobil Corporation (XOM). Archrock, Inc. (AROC) offers the better valuation at 20. 7x trailing P/E (18. 7x forward), making it the more compelling value choice. Analysts rate Archrock, Inc. (AROC) a "Buy" — based on 18 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, Archrock, Inc.

(AROC) is the cheapest at 20. 7x versus The Williams Companies, Inc. at 34. 1x. On forward P/E, Exxon Mobil Corporation is actually cheaper at 14. 3x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Kinder Morgan, Inc. wins at 0. 23x versus The Williams Companies, Inc. 's 0. 46x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Archrock, Inc.

(AROC) delivered a total return of +327. 1%, compared to +108. 4% for Kinder Morgan, Inc. (KMI). Over 10 years, the gap is even starker: AROC returned +560. 2% versus XOM's +102. 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), Exxon Mobil Corporation (XOM) is the lower-risk stock at -0.

20β versus Archrock, Inc. 's 0. 85β — meaning AROC is approximately -535% more volatile than XOM relative to the S&P 500. On balance sheet safety, Exxon Mobil Corporation (XOM) carries a lower debt/equity ratio of 16% versus 196% for The Williams Companies, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Archrock, Inc.

(AROC) is pulling ahead at 28. 7% versus -4. 5% for Exxon Mobil Corporation (XOM). On earnings-per-share growth, the picture is similar: Archrock, Inc. grew EPS 75. 2% year-over-year, compared to -14. 5% for Exxon Mobil Corporation. Over a 3-year CAGR, AROC leads at 20. 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.

The Williams Companies, Inc.

(WMB) is the more profitable company, earning 21. 9% net margin versus 8. 9% for Exxon Mobil Corporation — meaning it keeps 21. 9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AROC leads at 38. 7% versus 10. 5% for XOM. At the gross margin level — before operating expenses — AROC leads at 48. 6%, 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, Kinder Morgan, Inc. (KMI) is the more undervalued stock at a PEG of 0. 23x versus The Williams Companies, Inc. 's 0. 46x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Exxon Mobil Corporation (XOM) trades at 14. 3x forward P/E versus 30. 6x for The Williams Companies, Inc. — 16. 3x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for AROC: 14. 1% to $43. 50.

All stocks in this comparison pay dividends.

Kinder Morgan, Inc. (KMI) offers the highest yield at 3. 7%, versus 2. 1% for Archrock, Inc. (AROC).

For long-horizon retirement investors, Exxon Mobil Corporation (XOM) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β -0.

20), 2. 7% yield, +102. 6% 10Y return). Both have compounded well over 10 years (XOM: +102. 6%, AROC: +560. 2%), 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 Energy sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: AROC is a small-cap high-growth stock; XOM is a large-cap quality compounder stock; KMI is a mid-cap income-oriented stock; WMB is a mid-cap quality compounder stock. 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.