The short version

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

  • Zoetis is the larger company, worth $33.3B, about 1.5 times United Therapeutics.
  • Zoetis grew revenue faster over the last year (-0.2% vs -1.9%).
  • On earnings, Zoetis is the cheaper stock (13.0x vs 19.8x).
  • United Therapeutics's price assumes faster free cash flow growth: about 6% a year, against 1% for Zoetis (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.

MeasureUTHRZTS
Market cap$22.8B$33.3B
Share price$549.16$74.81
Revenue (last fiscal year)$3.2B$9.5B
Free cash flow (last fiscal year)$1.0B$2.3B
Revenue growth, last year-1.9%-0.2%
Revenue growth per year, last 5 fiscal years+17.2%+5.0%
Operating margin44.4%—
Net margin41.6%27.5%
Return on equity20.5%83.1%
P/E (trailing)19.8x13.0x
Price / free cash flow21.9x14.6x
EV / EBITDA11.7x10.0x
FCF growth the price implies6.2%0.86%
Dividend yield—2.6%
Debt / equity0.13x3.79x
Fundamental gradeBC
Superinvestors holding it09
Insider purchases, last 12 months010

Results from SEC filings

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

United Therapeutics

YearRevenueFree cash flowOp. margin
2021$1.7B$477M33.0%
2022$1.9B$664M50.6%
2023$2.3B$748M50.9%
2024$2.9B$1.1B47.9%
2025$3.2B$1.0B46.9%

Zoetis

YearRevenueFree cash flowOp. margin
2021$7.8B$1.7B—
2022$8.1B$1.3B—
2023$8.5B$1.6B—
2024$9.3B$2.3B—
2025$9.5B$2.3B—

Where the revenue comes from

United Therapeutics · by products, 2025

Tyvaso DPI$1.3B41%
Nebulized Tyvaso$586M18%
Remodulin$527M17%
Orenitram$497M16%
Unituxin$227M7%
Adcirca$30M1%

Zoetis · by products, 2025

Companion Animal$6.6B70%
Livestock$2.8B29%
Contract Manufacturing and Human Health Diagnostics$116M1%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open UTHR in Investingly

Questions

Which is bigger, United Therapeutics or Zoetis?

Zoetis (ZTS), at $33.3B against $22.8B.

Is UTHR or ZTS cheaper?

By trailing P/E, Zoetis (13.0x) is cheaper than United Therapeutics (19.8x). A lower multiple can also mean the market expects less growth.

Which grows faster, UTHR or ZTS?

Zoetis: revenue grew -0.2% over the last year, against -1.9%.

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