The short version

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

  • Constellation Energy is the larger company, worth $104.6B, about 1.9 times Vistra.
  • Constellation Energy grew revenue faster over the last year (+23.0% vs -5.5%).
  • Vistra keeps more of each dollar of revenue as operating profit (18.6% vs 14.9%).
  • On earnings, Constellation Energy is the cheaper stock (25.2x vs 27.3x).
  • Constellation Energy's price assumes faster free cash flow growth: about 24% a year, against 15% for Vistra (reverse DCF).

Side by side

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

MeasureCEGVST
Market cap$104.6B$55.1B
Share price$298.07$166.72
Revenue (last fiscal year)$25.5B$17.7B
Free cash flow (last fiscal year)$1.3B$1.3B
Revenue growth, last year+23.0%-5.5%
Revenue growth per year, last 5 fiscal years+8.4%+10.1%
Operating margin14.9%18.6%
Net margin11.2%11.6%
Return on equity10.8%40.5%
P/E (trailing)25.2x27.3x
Price / free cash flow81.2x426.7x
EV / EBITDA12.9x11.2x
FCF growth the price implies23.5%14.6%
Dividend yield0.53%0.57%
Debt / equity2.06x6.77x
Fundamental gradeDD
Superinvestors holding it66
Insider purchases, last 12 months88

Results from SEC filings

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

Constellation Energy

YearRevenueFree cash flowOp. margin
2021$18.5B-$2.7B-1.9%
2022$24.3B-$4.0B2.0%
2023$24.9B-$7.7B6.5%
2024$23.6B-$5.0B18.5%
2025$25.5B$1.3B12.1%

Vistra

YearRevenueFree cash flowOp. margin
2021$12.1B-$1.2B-12.5%
2022$13.7B-$816M-8.6%
2023$14.8B$3.8B18.0%
2024$17.2B$2.5B23.7%
2025$17.7B$1.3B10.7%

Where the revenue comes from

Constellation Energy · by segments, 2025

Mid-Atlantic$6.5B32%
Midwest$5.3B26%
Other Power Regions$4.9B24%
New York$2.4B12%
ERCOT$1.3B6%

Vistra · by segments, 2025

Retail$13.0B74%
East$3.3B19%
Texas$918M5%
West$328M2%
Asset Closure$4M0%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open CEG in Investingly

Questions

Which is bigger, Constellation Energy or Vistra?

Constellation Energy (CEG), at $104.6B against $55.1B.

Is CEG or VST cheaper?

By trailing P/E, Constellation Energy (25.2x) is cheaper than Vistra (27.3x). A lower multiple can also mean the market expects less growth.

Which grows faster, CEG or VST?

Constellation Energy: revenue grew +23.0% over the last year, against -5.5%.

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