SUPN vs ACAD

For growth investors, ACADIA Pharmaceuticals Inc.

(ACAD) is the stronger pick with 31. 8% revenue growth year-over-year, versus 8. 6% for Supernus Pharmaceuticals, Inc. (SUPN). ACADIA Pharmaceuticals Inc. (ACAD) offers the better valuation at 16. 4x trailing P/E (50. 4x forward), making it the more compelling value choice. Analysts rate Supernus Pharmaceuticals, Inc. (SUPN) a "Buy" — based on 14 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 forward P/E, Supernus Pharmaceuticals, Inc.

is actually cheaper at 22. 6x — notably different from the trailing picture, reflecting expected earnings growth.

Over the past 5 years, Supernus Pharmaceuticals, Inc.

(SUPN) delivered a total return of +60. 8%, compared to +15. 2% for ACADIA Pharmaceuticals Inc. (ACAD). Over 10 years, the gap is even starker: SUPN returned +213. 7% versus ACAD's -17. 4%. 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), Supernus Pharmaceuticals, Inc.

(SUPN) is the lower-risk stock at 0. 78β versus ACADIA Pharmaceuticals Inc. 's 1. 26β — meaning ACAD is approximately 61% more volatile than SUPN relative to the S&P 500. On balance sheet safety, Supernus Pharmaceuticals, Inc. (SUPN) carries a lower debt/equity ratio of 4% versus 7% for ACADIA Pharmaceuticals Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), ACADIA Pharmaceuticals Inc.

(ACAD) is pulling ahead at 31. 8% versus 8. 6% for Supernus Pharmaceuticals, Inc. (SUPN). On earnings-per-share growth, the picture is similar: ACADIA Pharmaceuticals Inc. grew EPS 467. 6% year-over-year, compared to -151. 5% for Supernus Pharmaceuticals, Inc.. Over a 3-year CAGR, ACAD leads at 25. 5% 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.

ACADIA Pharmaceuticals Inc.

(ACAD) is the more profitable company, earning 23. 6% net margin versus -5. 4% for Supernus Pharmaceuticals, Inc. — meaning it keeps 23. 6% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ACAD leads at 24. 1% versus -5. 1% for SUPN. At the gross margin level — before operating expenses — ACAD leads at 91. 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.

On forward earnings alone, Supernus Pharmaceuticals, Inc.

(SUPN) trades at 22. 6x forward P/E versus 50. 4x for ACADIA Pharmaceuticals Inc. — 27. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for ACAD: 55. 6% to $34. 78.

None of the stocks in this comparison currently pay a material dividend.

All are effectively zero-yield and should be held for capital appreciation rather than income.

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

(SUPN) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 78), +213. 7% 10Y return). Both have compounded well over 10 years (SUPN: +213. 7%, ACAD: -17. 4%), 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: SUPN is a small-cap quality compounder stock; ACAD is a small-cap high-growth 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.