ADMA vs PRPH vs BIO vs GRFS

For growth investors, ADMA Biologics, Inc.

(ADMA) is the stronger pick with 19. 6% revenue growth year-over-year, versus -84. 7% for ProPhase Labs, Inc. (PRPH). Bio-Rad Laboratories, Inc. (BIO) offers the better valuation at 9. 2x trailing P/E (25. 0x forward), making it the more compelling value choice. Analysts rate ADMA Biologics, Inc. (ADMA) 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, Bio-Rad Laboratories, Inc.

(BIO) is the cheapest at 9. 2x versus ADMA Biologics, Inc. at 14. 1x. On forward P/E, ADMA Biologics, Inc. is actually cheaper at 8. 9x — notably different from the trailing picture, reflecting expected earnings growth.

Over the past 5 years, ADMA Biologics, Inc.

(ADMA) delivered a total return of +386. 8%, compared to -63. 2% for ProPhase Labs, Inc. (PRPH). Over 10 years, the gap is even starker: BIO returned +81. 4% versus GRFS's -35. 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), Bio-Rad Laboratories, Inc.

(BIO) is the lower-risk stock at 0. 92β versus ProPhase Labs, Inc. 's 2. 28β — meaning PRPH is approximately 146% more volatile than BIO relative to the S&P 500. On balance sheet safety, ADMA Biologics, Inc. (ADMA) carries a lower debt/equity ratio of 17% versus 3% for ProPhase Labs, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), ADMA Biologics, Inc.

(ADMA) is pulling ahead at 19. 6% versus -84. 7% for ProPhase Labs, Inc. (PRPH). On earnings-per-share growth, the picture is similar: Grifols, S. A. grew EPS 147. 8% year-over-year, compared to -166. 3% for ProPhase Labs, Inc.. Over a 3-year CAGR, ADMA leads at 49. 0% 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.

Bio-Rad Laboratories, Inc.

(BIO) is the more profitable company, earning 29. 4% net margin versus -788. 2% for ProPhase Labs, Inc. — meaning it keeps 29. 4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ADMA leads at 37. 5% versus -570. 6% for PRPH. At the gross margin level — before operating expenses — ADMA leads at 57. 4%, 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, ADMA Biologics, Inc.

(ADMA) trades at 8. 9x forward P/E versus 25. 0x for Bio-Rad Laboratories, Inc. — 16. 1x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for ADMA: 165. 6% to $22. 50.

In this comparison, GRFS (2.

6% yield) pays a dividend. ADMA, PRPH, BIO do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Grifols, S.

A. (GRFS) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 1. 12), 2. 6% yield). ProPhase Labs, Inc. (PRPH) carries a higher beta of 2. 28 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (GRFS: -35. 4%, PRPH: +37. 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: ADMA is a small-cap high-growth stock; PRPH is a small-cap quality compounder stock; BIO is a small-cap deep-value stock; GRFS is a small-cap deep-value stock. GRFS pays a dividend while ADMA, PRPH, BIO 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.