PRTA vs JNJ vs PFE vs IQV

For growth investors, IQVIA Holdings Inc.

(IQV) is the stronger pick with 5. 9% revenue growth year-over-year, versus -92. 8% for Prothena Corporation plc (PRTA). Pfizer Inc. (PFE) offers the better valuation at 19. 5x trailing P/E (8. 9x forward), making it the more compelling value choice. Analysts rate Prothena Corporation plc (PRTA) a "Buy" — based on 28 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, Pfizer Inc.

(PFE) is the cheapest at 19. 5x versus Johnson & Johnson at 38. 4x. On forward P/E, Pfizer Inc. is actually cheaper at 8. 9x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: IQVIA Holdings Inc. wins at 0. 35x versus Johnson & Johnson's 34. 17x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Johnson & Johnson (JNJ) delivered a total return of +46.

1%, compared to -57. 2% for Prothena Corporation plc (PRTA). Over 10 years, the gap is even starker: IQV returned +166. 5% versus PRTA's -73. 0%. 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), Johnson & Johnson (JNJ) is the lower-risk stock at 0.

06β versus IQVIA Holdings Inc. 's 1. 33β — meaning IQV is approximately 2237% more volatile than JNJ relative to the S&P 500. On balance sheet safety, Prothena Corporation plc (PRTA) carries a lower debt/equity ratio of 5% versus 2% for IQVIA Holdings Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), IQVIA Holdings Inc.

(IQV) is pulling ahead at 5. 9% versus -92. 8% for Prothena Corporation plc (PRTA). On earnings-per-share growth, the picture is similar: IQVIA Holdings Inc. grew EPS 4. 7% year-over-year, compared to -99. 6% for Prothena Corporation plc. Over a 3-year CAGR, IQV leads at 4. 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.

Johnson & Johnson (JNJ) is the more profitable company, earning 15.

8% net margin versus -25. 2% for Prothena Corporation plc — meaning it keeps 15. 8% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: JNJ leads at 24. 9% versus -1905. 8% for PRTA. At the gross margin level — before operating expenses — PFE leads at 70. 3%, 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, IQVIA Holdings Inc. (IQV) is the more undervalued stock at a PEG of 0. 35x versus Johnson & Johnson's 34. 17x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Pfizer Inc. (PFE) trades at 8. 9x forward P/E versus 42. 7x for Prothena Corporation plc — 33. 7x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for PRTA: 80. 4% to $19. 00.

In this comparison, PFE (6.

5% yield), JNJ (2. 2% yield) pay a dividend. PRTA, IQV do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Johnson & Johnson (JNJ) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

06), 2. 2% yield, +132. 3% 10Y return). Both have compounded well over 10 years (JNJ: +132. 3%, IQV: +166. 5%), 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: PRTA is a small-cap quality compounder stock; JNJ is a large-cap quality compounder stock; PFE is a mid-cap income-oriented stock; IQV is a mid-cap quality compounder stock. JNJ, PFE pay a dividend while PRTA, IQV 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.