SWX vs WEC vs CMS vs NI

For growth investors, NiSource Inc.

(NI) is the stronger pick with 21. 8% revenue growth year-over-year, versus -62. 0% for Southwest Gas Holdings, Inc. (SWX). Southwest Gas Holdings, Inc. (SWX) offers the better valuation at 14. 9x trailing P/E (21. 3x forward), making it the more compelling value choice. Analysts rate Southwest Gas Holdings, Inc. (SWX) a "Buy" — based on 13 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, Southwest Gas Holdings, Inc.

(SWX) is the cheapest at 14. 9x versus NiSource Inc. at 24. 1x. On forward P/E, CMS Energy Corporation is actually cheaper at 19. 0x — 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: Southwest Gas Holdings, Inc. wins at 2. 67x versus WEC Energy Group, Inc. 's 4. 06x.

Over the past 5 years, NiSource Inc.

(NI) delivered a total return of +100. 8%, compared to +30. 4% for CMS Energy Corporation (CMS). Over 10 years, the gap is even starker: NI returned +137. 6% versus SWX's +67. 4%. 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), WEC Energy Group, Inc.

(WEC) is the lower-risk stock at -0. 03β versus NiSource Inc. 's 0. 22β — meaning NI is approximately -884% more volatile than WEC relative to the S&P 500. On balance sheet safety, Southwest Gas Holdings, Inc. (SWX) carries a lower debt/equity ratio of 89% versus 195% for CMS Energy Corporation — giving it more financial flexibility in a downturn.

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

(NI) is pulling ahead at 21. 8% versus -62. 0% for Southwest Gas Holdings, Inc. (SWX). On earnings-per-share growth, the picture is similar: Southwest Gas Holdings, Inc. grew EPS 120. 3% year-over-year, compared to 0. 0% for WEC Energy Group, Inc.. Over a 3-year CAGR, NI leads at 4. 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.

Southwest Gas Holdings, Inc.

(SWX) is the more profitable company, earning 22. 7% net margin versus 12. 5% for CMS Energy Corporation — meaning it keeps 22. 7% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: NI leads at 27. 6% versus 20. 2% for CMS. At the gross margin level — before operating expenses — CMS leads at 60. 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.

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, Southwest Gas Holdings, Inc. (SWX) is the more undervalued stock at a PEG of 2. 67x versus WEC Energy Group, Inc. 's 4. 06x. Both stocks trade at elevated growth-adjusted valuations, so expected growth needs to materialise. On forward earnings alone, CMS Energy Corporation (CMS) trades at 19. 0x forward P/E versus 22. 9x for NiSource Inc. — 3. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for CMS: 9. 5% to $81. 00.

All stocks in this comparison pay dividends.

WEC Energy Group, Inc. (WEC) offers the highest yield at 3. 1%, versus 2. 4% for NiSource Inc. (NI).

For long-horizon retirement investors, WEC Energy Group, Inc.

(WEC) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β -0. 03), 3. 1% yield, +133. 1% 10Y return). Both have compounded well over 10 years (WEC: +133. 1%, NI: +137. 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 Utilities sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: SWX is a small-cap deep-value stock; WEC is a mid-cap income-oriented stock; CMS is a mid-cap quality compounder stock; NI is a mid-cap high-growth 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.