CMPX vs AZN vs MRK vs BMY

For growth investors, AstraZeneca PLC (AZN) is the stronger pick with 8.

6% revenue growth year-over-year, versus -100. 0% for Compass Therapeutics, Inc. (CMPX). Merck & Co. , Inc. (MRK) offers the better valuation at 15. 4x trailing P/E (21. 9x forward), making it the more compelling value choice. Analysts rate Compass Therapeutics, Inc. (CMPX) a "Buy" — based on 15 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, Merck & Co.

, Inc. (MRK) is the cheapest at 15. 4x versus AstraZeneca PLC at 27. 9x. On forward P/E, Bristol-Myers Squibb Company is actually cheaper at 8. 9x — 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: AstraZeneca PLC wins at 0. 81x versus Merck & Co. , Inc. 's 1. 03x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, AstraZeneca PLC (AZN) delivered a total return of +82.

2%, compared to -61. 2% for Compass Therapeutics, Inc. (CMPX). Over 10 years, the gap is even starker: AZN returned +268. 6% versus CMPX's -78. 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), Merck & Co.

, Inc. (MRK) is the lower-risk stock at 0. 48β versus Compass Therapeutics, Inc. 's 1. 35β — meaning CMPX is approximately 184% more volatile than MRK relative to the S&P 500. On balance sheet safety, Compass Therapeutics, Inc. (CMPX) carries a lower debt/equity ratio of 5% versus 3% for Bristol-Myers Squibb Company — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), AstraZeneca PLC (AZN) is pulling ahead at 8.

6% versus -100. 0% for Compass Therapeutics, Inc. (CMPX). On earnings-per-share growth, the picture is similar: AstraZeneca PLC grew EPS 190. 7% year-over-year, compared to -16. 7% for Compass Therapeutics, Inc.. Over a 3-year CAGR, AZN leads at 9. 8% 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.

Merck & Co.

, Inc. (MRK) is the more profitable company, earning 28. 1% net margin versus 0. 0% for Compass Therapeutics, Inc. — meaning it keeps 28. 1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: MRK leads at 36. 2% versus 0. 0% for CMPX. At the gross margin level — before operating expenses — AZN leads at 81. 9%, 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, AstraZeneca PLC (AZN) is the more undervalued stock at a PEG of 0. 81x versus Merck & Co. , Inc. 's 1. 03x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Bristol-Myers Squibb Company (BMY) trades at 8. 9x forward P/E versus 21. 9x for Merck & Co. , Inc. — 13. 0x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for CMPX: 518. 8% to $11. 20.

In this comparison, BMY (4.

4% yield), MRK (2. 9% yield), AZN (1. 8% yield) pay a dividend. CMPX does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Merck & Co.

, Inc. (MRK) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 48), 2. 9% yield, +166. 5% 10Y return). Both have compounded well over 10 years (MRK: +166. 5%, CMPX: -78. 7%), 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: CMPX is a small-cap quality compounder stock; AZN is a large-cap quality compounder stock; MRK is a large-cap deep-value stock; BMY is a mid-cap deep-value stock. AZN, MRK, BMY pay a dividend while CMPX does 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.