The short version

From the latest prices and each company's SEC filings. Who's ahead on each measure, not which to buy.

  • UGI is the larger company, worth $8.3B, about 1.4 times Southwest Gas.
  • UGI grew revenue faster over the last year (-4.5% vs -21.6%).
  • On earnings, UGI is the cheaper stock (13.7x vs 25.6x).

Side by side

The stronger figure is shaded where higher (or, for valuation multiples, lower) reads as better. How the implied growth works.

MeasureSWXUGI
Market cap$6.1B$8.3B
Share price$84.14$37.12
Revenue (last fiscal year)$1.9B$7.3B
Free cash flow (last fiscal year)-$252M$390M
Revenue growth, last year-21.6%-4.5%
Revenue growth per year, last 5 fiscal years-14.8%-0.5%
Operating margin—16.2%
Net margin—9.2%
Return on equity13.2%12.9%
P/E (trailing)25.6x13.7x
Price / free cash flow—21.4x
EV / EBITDA11.8x8.35x
FCF growth the price implies—5.9%
Dividend yield2.9%3.9%
Debt / equity1.54x2.00x
Fundamental gradeDD
Superinvestors holding it35
Insider purchases, last 12 months00

Results from SEC filings

Revenue and free cash flow by fiscal year, from each company's 10-K filings.

Southwest Gas

YearRevenueFree cash flowOp. margin
2021$3.7B-$604M10.0%
2022$5.0B-$452M-0.49%
2023$2.5B-$257M11.6%
2024$2.5B$509M16.4%
2025$1.9B-$252M24.4%

UGI

YearRevenueFree cash flowOp. margin
2021$7.4B$791M31.6%
2022$10.1B-$88M16.5%
2023$8.9B$133M-16.2%
2024$7.2B$386M10.7%
2025$7.3B$390M15.2%

Where the revenue comes from

Southwest Gas · by segments, 2023

Utility Infrastructure Services$2.9B53%
Natural Gas Distribution$2.5B46%
Pipeline and Storage$35M1%

UGI · by segments, 2025

AmeriGas Propane$2.2B29%
UGI International$2.1B28%
UGI Utilities, Inc.$1.7B23%
Midstream & Marketing$1.5B20%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open SWX in Investingly

Questions

Which is bigger, Southwest Gas or UGI?

UGI (UGI), at $8.3B against $6.1B.

Is SWX or UGI cheaper?

By trailing P/E, UGI (13.7x) is cheaper than Southwest Gas (25.6x). A lower multiple can also mean the market expects less growth.

Which grows faster, SWX or UGI?

UGI: revenue grew -4.5% over the last year, against -21.6%.

Prices and ratios as of the last daily update; statements from SEC filings. Information only, not investment advice.