AMRN vs ELAN vs PAHC vs PRGO vs ZTS

For growth investors, Phibro Animal Health Corporation (PAHC) is the stronger pick with 27.

4% revenue growth year-over-year, versus -6. 5% for Amarin Corporation plc (AMRN). Zoetis Inc. (ZTS) offers the better valuation at 14. 5x trailing P/E (12. 4x forward), making it the more compelling value choice. Analysts rate Elanco Animal Health Incorporated (ELAN) a "Buy" — based on 20 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, Zoetis Inc.

(ZTS) is the cheapest at 14. 5x versus Phibro Animal Health Corporation at 36. 3x. On forward P/E, Perrigo Company plc is actually cheaper at 5. 6x — 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: Zoetis Inc. wins at 1. 04x versus Phibro Animal Health Corporation's 1. 90x — a reasonable growth-adjusted valuation.

Over the past 5 years, Phibro Animal Health Corporation (PAHC) delivered a total return of +66.

0%, compared to -83. 9% for Amarin Corporation plc (AMRN). Over 10 years, the gap is even starker: PAHC returned +128. 6% versus PRGO's -77. 7%. 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), Zoetis Inc.

(ZTS) is the lower-risk stock at 0. 90β versus Elanco Animal Health Incorporated's 1. 42β — meaning ELAN is approximately 57% more volatile than ZTS relative to the S&P 500. On balance sheet safety, Amarin Corporation plc (AMRN) carries a lower debt/equity ratio of 3% versus 3% for Zoetis Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Phibro Animal Health Corporation (PAHC) is pulling ahead at 27.

4% versus -6. 5% for Amarin Corporation plc (AMRN). On earnings-per-share growth, the picture is similar: Phibro Animal Health Corporation grew EPS 1883% year-over-year, compared to -723. 2% for Perrigo Company plc. Over a 3-year CAGR, PAHC leads at 11. 2% 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.

Zoetis Inc.

(ZTS) is the more profitable company, earning 28. 2% net margin versus -33. 5% for Perrigo Company plc — meaning it keeps 28. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ZTS leads at 38. 0% versus -6. 5% for AMRN. At the gross margin level — before operating expenses — ZTS leads at 70. 5%, 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, Zoetis Inc. (ZTS) is the more undervalued stock at a PEG of 1. 04x versus Phibro Animal Health Corporation's 1. 90x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, Perrigo Company plc (PRGO) trades at 5. 6x forward P/E versus 23. 3x for Elanco Animal Health Incorporated — 17. 7x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for PRGO: 70. 6% to $20. 00.

In this comparison, PRGO (9.

8% yield), ZTS (2. 3% yield), PAHC (1. 1% yield) pay a dividend. AMRN, ELAN do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Zoetis Inc.

(ZTS) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 90), 2. 3% yield, +107. 3% 10Y return). Both have compounded well over 10 years (ZTS: +107. 3%, ELAN: -33. 3%), 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 Healthcare sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: AMRN is a small-cap quality compounder stock; ELAN is a mid-cap quality compounder stock; PAHC is a small-cap high-growth stock; PRGO is a small-cap income-oriented stock; ZTS is a mid-cap deep-value stock. PAHC, PRGO, ZTS pay a dividend while AMRN, ELAN do not, making them suitable for different income and tax situations. 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.