ACIU vs LLY vs BIIB vs IQV vs CRL

For growth investors, Eli Lilly and Company (LLY) is the stronger pick with 44.

7% revenue growth year-over-year, versus -86. 9% for AC Immune S. A. (ACIU). Biogen Inc. (BIIB) offers the better valuation at 21. 7x trailing P/E (13. 0x forward), making it the more compelling value choice. Analysts rate AC Immune S. A. (ACIU) a "Buy" — based on 9 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, Biogen Inc.

(BIIB) is the cheapest at 21. 7x versus Eli Lilly and Company at 42. 5x. On forward P/E, Biogen Inc. is actually cheaper at 13. 0x. 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 Eli Lilly and Company's 0. 98x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Eli Lilly and Company (LLY) delivered a total return of +411.

1%, compared to -52. 4% for AC Immune S. A. (ACIU). Over 10 years, the gap is even starker: LLY returned +1238% versus ACIU's -81. 3%. 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), Biogen Inc.

(BIIB) is the lower-risk stock at 0. 64β versus AC Immune S. A. 's 1. 63β — meaning ACIU is approximately 155% more volatile than BIIB relative to the S&P 500. On balance sheet safety, AC Immune S. A. (ACIU) carries a lower debt/equity ratio of 10% versus 2% for IQVIA Holdings Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Eli Lilly and Company (LLY) is pulling ahead at 44.

7% versus -86. 9% for AC Immune S. A. (ACIU). On earnings-per-share growth, the picture is similar: Eli Lilly and Company grew EPS 96. 0% year-over-year, compared to -1555. 0% for Charles River Laboratories International, Inc.. Over a 3-year CAGR, LLY leads at 31. 7% 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.

Eli Lilly and Company (LLY) is the more profitable company, earning 31.

7% net margin versus -1971. 6% for AC Immune S. A. — meaning it keeps 31. 7% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: LLY leads at 45. 6% versus -1927. 3% for ACIU. At the gross margin level — before operating expenses — ACIU leads at 100. 0%, 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 Eli Lilly and Company's 0. 98x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Biogen Inc. (BIIB) trades at 13. 0x forward P/E versus 28. 2x for Eli Lilly and Company — 15. 2x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for ACIU: 138. 9% to $7. 00.

In this comparison, LLY (0.

6% yield) pays a dividend. ACIU, BIIB, IQV, CRL do not pay a meaningful dividend and should not be held primarily for income.

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

71), 0. 6% yield, +1238% 10Y return). AC Immune S. A. (ACIU) carries a higher beta of 1. 63 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (LLY: +1238%, ACIU: -81. 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: ACIU is a small-cap quality compounder stock; LLY is a large-cap high-growth stock; BIIB is a mid-cap quality compounder stock; IQV is a mid-cap quality compounder stock; CRL is a small-cap quality compounder stock. LLY pays a dividend while ACIU, BIIB, IQV, CRL 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.