SYRE vs PTGX

Analysts rate Spyre Therapeutics, Inc.

(SYRE) a "Buy" — based on 10 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, Protagonist Therapeutics, Inc.

(PTGX) delivered a total return of +238. 8%, compared to -59. 6% for Spyre Therapeutics, Inc. (SYRE). Over 10 years, the gap is even starker: PTGX returned +744. 9% versus SYRE's -66. 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), Protagonist Therapeutics, Inc.

(PTGX) is the lower-risk stock at 0. 25β versus Spyre Therapeutics, Inc. 's 2. 06β — meaning SYRE is approximately 720% more volatile than PTGX relative to the S&P 500.

On earnings-per-share growth, the picture is similar: Spyre Therapeutics, Inc.

grew EPS 37. 7% year-over-year, compared to -148. 5% for Protagonist Therapeutics, 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.

Spyre Therapeutics, Inc.

(SYRE) is the more profitable company, earning -198. 3% net margin versus -282. 8% for Protagonist Therapeutics, Inc. — meaning it keeps -198. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: SYRE leads at -256. 0% versus -343. 6% for PTGX. At the gross margin level — before operating expenses — PTGX leads at 97. 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.

Analyst consensus price targets imply the most upside for PTGX: 18.

1% to $116. 75.

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, Protagonist Therapeutics, Inc.

(PTGX) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 25), +744. 9% 10Y return). Spyre Therapeutics, Inc. (SYRE) carries a higher beta of 2. 06 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (PTGX: +744. 9%, SYRE: -66. 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.

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.