The short version

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

  • CoStar is the larger company, worth $12.4B, about 1.8 times Compass.
  • Compass grew revenue faster over the last year (+109.0% vs +18.4%).
  • CoStar keeps more of each dollar of revenue as operating profit (2.2% vs -2.6%).
  • On earnings, CoStar is the cheaper stock (433.3x vs 455.6x).
  • CoStar's price assumes faster free cash flow growth: about 26% a year, against 12% for Compass (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.

MeasureCOMPCSGP
Market cap$6.8B$12.4B
Share price$9.39$29.67
Revenue (last fiscal year)$7.0B$3.2B
Free cash flow (last fiscal year)$203M$123M
Revenue growth, last year+109.0%+18.4%
Revenue growth per year, last 5 fiscal years+2.0%+13.7%
Operating margin-2.6%2.2%
Net margin0.63%2.1%
Return on equity2.2%0.93%
P/E (trailing)455.6x433.3x
Price / free cash flow33.5x302.1x
EV / EBITDA103.9x28.0x
FCF growth the price implies11.7%26.5%
Dividend yield——
Debt / equity1.79x0.28x
Fundamental gradeCC
Superinvestors holding it56
Insider purchases, last 12 months010

Results from SEC filings

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

Compass

YearRevenueFree cash flowOp. margin
2021$6.4B-$79M-7.7%
2022$6.0B-$362M-9.8%
2023$4.9B-$37M-6.4%
2024$5.6B$106M-2.7%
2025$7.0B$203M-0.91%

CoStar

YearRevenueFree cash flowOp. margin
2021$1.9B$346M22.2%
2022$2.2B$444M20.7%
2023$2.5B$372M11.5%
2024$2.7B-$186M0.18%
2025$3.2B$123M-2.2%

Where the revenue comes from

Compass

No segment breakdown reported.

CoStar · by segments, 2025

Commercial Real Estate$1.8B55%
Residential Real Estate$1.5B45%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open COMP in Investingly

Questions

Which is bigger, Compass or CoStar?

CoStar (CSGP), at $12.4B against $6.8B.

Is COMP or CSGP cheaper?

By trailing P/E, CoStar (433.3x) is cheaper than Compass (455.6x). A lower multiple can also mean the market expects less growth.

Which grows faster, COMP or CSGP?

Compass: revenue grew +109.0% over the last year, against +18.4%.

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