ASMB vs REGN

For growth investors, Assembly Biosciences, Inc.

(ASMB) is the stronger pick with 153. 5% revenue growth year-over-year, versus 1. 0% for Regeneron Pharmaceuticals, Inc. (REGN). Regeneron Pharmaceuticals, Inc. (REGN) offers the better valuation at 17. 1x trailing P/E (15. 3x forward), making it the more compelling value choice. Analysts rate Assembly Biosciences, Inc. (ASMB) a "Buy" — based on 11 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.

Over the past 5 years, Regeneron Pharmaceuticals, Inc.

(REGN) delivered a total return of +43. 6%, compared to -36. 5% for Assembly Biosciences, Inc. (ASMB). Over 10 years, the gap is even starker: REGN returned +90. 0% versus ASMB's -47. 8%. 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), Regeneron Pharmaceuticals, Inc.

(REGN) is the lower-risk stock at 0. 81β versus Assembly Biosciences, Inc. 's 1. 67β — meaning ASMB is approximately 107% more volatile than REGN relative to the S&P 500. On balance sheet safety, Assembly Biosciences, Inc. (ASMB) carries a lower debt/equity ratio of 1% versus 9% for Regeneron Pharmaceuticals, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Assembly Biosciences, Inc.

(ASMB) is pulling ahead at 153. 5% versus 1. 0% for Regeneron Pharmaceuticals, Inc. (REGN). On earnings-per-share growth, the picture is similar: Assembly Biosciences, Inc. grew EPS 91. 8% year-over-year, compared to 8. 2% for Regeneron Pharmaceuticals, Inc.. 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.

Regeneron Pharmaceuticals, Inc.

(REGN) is the more profitable company, earning 31. 4% net margin versus -8. 5% for Assembly Biosciences, Inc. — meaning it keeps 31. 4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: REGN leads at 24. 9% versus -16. 8% for ASMB. At the gross margin level — before operating expenses — ASMB leads at 99. 8%, 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.

Analyst consensus price targets imply the most upside for ASMB: 29.

3% to $40. 00.

In this comparison, REGN (0.

5% yield) pays a dividend. ASMB does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Regeneron Pharmaceuticals, Inc.

(REGN) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 81)). Assembly Biosciences, Inc. (ASMB) carries a higher beta of 1. 67 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (REGN: +90. 0%, ASMB: -47. 8%), 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: ASMB is a small-cap high-growth stock; REGN is a mid-cap deep-value stock. 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.