Comprehensive Stock Comparison
Compare Azitra, Inc. (AZTR) vs Synlogic, Inc. (SYBX) Stock
Analyze side-by-side fundamentals, valuation, growth, and profitability to decide which stock is the better buy.
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Quick Verdict
| Category | Winner | Why |
|---|---|---|
| Growth |  SYBX | -99.8% revenue growth vs AZTR's -100.0% |
| Stability / Safety |  AZTR | Beta 0.65 vs SYBX's 0.97 |
| Dividends | Tie | Neither pays a meaningful dividend |
| Momentum (1Y) | SYBX | -53.1% vs AZTR's -91.7% |
| Efficiency (ROA) | AZTR | -0.2% ROA vs SYBX's -19.5%, ROIC -0.8% vs -205.7% |
Who Each Stock Is For
Income & stability
AZTRbeta 0.65
Growth exposure
SYBXRev growth -99.8%, EPS growth 78.2%, 3Y rev CAGR -83.4%
Long-term compounding (10Y)
SYBX-98.0% 10Y total return vs AZTR's -100.0%
Sleep-well-at-night portfolio
AZTRLower volatility, beta 0.65, Low D/E 11.1%, current ratio 2.83x
Defensive / Recession hedge
AZTRBeta 0.65, current ratio 2.83x
Business Model
What each company does and how it makes money
Azitra is a preclinical biopharmaceutical company developing engineered bacterial therapies for rare and serious skin diseases. It aims to generate revenue through drug development partnerships and future product sales — though currently in preclinical stages without commercial revenue. The company's key advantage lies in its proprietary platform for engineering commensal skin bacteria to deliver therapeutic proteins directly to diseased skin.
Synlogic is a clinical-stage biopharmaceutical company developing synthetic biotic medicines — engineered probiotics — to treat metabolic and immunological diseases. It generates revenue primarily through research collaborations and milestone payments from partners like Roche, with potential future income from drug sales if its pipeline succeeds. The company's key advantage lies in its proprietary platform for engineering bacterial strains to perform therapeutic functions in the gut — a novel approach distinct from traditional small molecules or biologics.
Financial Metrics Comparison
Side-by-side fundamentals across 2 stocks. BestLagging
Financial Scorecard
AZTR 1SYBX 1AZTR5/7 metricsSYBX5/6 metricsAZTR leads in 1 of 6 categories (Profitability & Efficiency). SYBX leads in 1 (Total Returns). 2 tied.
Financial Metrics (TTM)
AZTR and SYBX operate at a comparable scale, with $0 and $0 in trailing revenue.
| Metric | AZTRAzitra, Inc. | SYBXSynlogic, Inc. |
|---|---|---|
| RevenueTrailing 12 months | $0 | $0 |
| EBITDAEarnings before interest/tax | -$11M | -$3M |
| Net IncomeAfter-tax profit | -$11M | -$3M |
| Free Cash FlowCash after capex | -$86M | -$4M |
| Gross MarginGross profit ÷ Revenue | — | +100.0% |
| Operating MarginEBIT ÷ Revenue | — | -5118.8% |
| Net MarginNet income ÷ Revenue | — | -2919.9% |
| FCF MarginFCF ÷ Revenue | — | -3959.0% |
| Rev. Growth (YoY)Latest quarter vs prior year | — | — |
| EPS Growth (YoY)Latest quarter vs prior year | -6.9% | — |
Valuation Metrics
| Metric | AZTRAzitra, Inc. | SYBXSynlogic, Inc. |
|---|---|---|
| Market CapShares × price | $2M | $7M |
| Enterprise ValueMkt cap + debt − cash | -$1.6B | -$12M |
| Trailing P/EPrice ÷ TTM EPS | -0.08x | -0.31x |
| Forward P/EPrice ÷ next-FY EPS est. | — | — |
| PEG RatioP/E ÷ EPS growth rate | — | — |
| EV / EBITDAEnterprise value multiple | — | — |
| Price / SalesMarket cap ÷ Revenue | — | 877.42x |
| Price / BookPrice ÷ Book value/share | 0.00x | 0.57x |
| Price / FCFMarket cap ÷ FCF | — | — |
Profitability & Efficiency
AZTR delivers a -0.3% return on equity — every $100 of shareholder capital generates $-0 in annual profit, vs $-31 for SYBX. On the Piotroski fundamental quality scale (0–9), SYBX scores 2/9 vs AZTR's 1/9, reflecting mixed financial health.
| Metric | AZTRAzitra, Inc. | SYBXSynlogic, Inc. |
|---|---|---|
| ROE (TTM)Return on equity | -0.3% | -31.3% |
| ROA (TTM)Return on assets | -0.2% | -19.5% |
| ROICReturn on invested capital | -0.8% | -2.1% |
| ROCEReturn on capital employed | -0.6% | -120.6% |
| Piotroski ScoreFundamental quality 0–9 | 1 | 2 |
| Debt / EquityFinancial leverage | 0.11x | — |
| Net DebtTotal debt minus cash | -$1.6B | -$19M |
| Cash & Equiv.Liquid assets | $2.1B | $19M |
| Total DebtShort + long-term debt | $422M | $0 |
| Interest CoverageEBIT ÷ Interest expense | -13.79x | — |
Total Returns (with DRIP)
A $10,000 investment in SYBX five years ago would be worth $117 today (with dividends reinvested), compared to $2 for AZTR. Over the past 12 months, SYBX leads with a -53.1% total return vs AZTR's -91.7%. The 3-year compound annual growth rate (CAGR) favors SYBX at -60.9% vs AZTR's -94.2% — a key indicator of consistent wealth creation.
| Metric | AZTRAzitra, Inc. | SYBXSynlogic, Inc. |
|---|---|---|
| YTD ReturnYear-to-date | -32.1% | -48.7% |
| 1-Year ReturnPast 12 months | -91.7% | -53.1% |
| 3-Year ReturnCumulative with dividends | -100.0% | -94.0% |
| 5-Year ReturnCumulative with dividends | -100.0% | -98.8% |
| 10-Year ReturnCumulative with dividends | -100.0% | -98.0% |
| CAGR (3Y)Annualised 3-year return | -94.2% | -60.9% |
Risk & Volatility
AZTR is the less volatile stock with a 0.65 beta — it tends to amplify market swings less than SYBX's 0.97 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. SYBX currently trades 30.6% from its 52-week high vs AZTR's 7.1% drawdown — a narrower gap to the peak suggests stronger recent price momentum.
| Metric | AZTRAzitra, Inc. | SYBXSynlogic, Inc. |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 0.65x | 0.97x |
| 52-Week HighHighest price in past year | $2.66 | $1.96 |
| 52-Week LowLowest price in past year | $0.15 | $0.54 |
| % of 52W HighCurrent price vs 52-week peak | +7.1% | +30.6% |
| RSI (14)Momentum oscillator 0–100 | 35.7 | 34.3 |
| Avg Volume (50D)Average daily shares traded | 1.4M | 115K |
Analyst Outlook
| Metric | AZTRAzitra, Inc. | SYBXSynlogic, Inc. |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | — | — |
| Price TargetConsensus 12-month target | — | — |
| # AnalystsCovering analysts | — | — |
| Dividend YieldAnnual dividend ÷ price | — | — |
| Dividend StreakConsecutive years of raises | — | — |
| Dividend / ShareAnnual DPS | — | — |
| Buyback YieldShare repurchases ÷ mkt cap | 0.0% | 0.0% |
Historical Charts
Charts are rendered on first load. Hover for details.
Chart 1Total Return — 5 Years (Rebased to 100)
| Stock | Jun 23 | Mar 26 | Change |
|---|---|---|---|
| Azitra, Inc. (AZTR) | 100 | 0.02 | -100.0% |
| Synlogic, Inc. (SYBX) | 100 | 10.6 | -89.4% |
Synlogic, Inc. (SYBX) returned -99% over 5 years vs Azitra, Inc. (AZTR)'s -100%.
Chart 2Revenue Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| Azitra, Inc. (AZTR) | $110000.00 | $0.00 | -100.0% |
| Synlogic, Inc. (SYBX) | $444000.00 | $8000.00 | -98.2% |
Chart 3Net Margin Trend — 10 Years
| Stock | 2016 | 2024 | Change |
|---|---|---|---|
| Azitra, Inc. (AZTR) | -81.3% | -119.6% | -47.1% |
| Synlogic, Inc. (SYBX) | -59.2% | -2919.9% | -4835.4% |
Synlogic, Inc.'s net margin went from -59% (2016) to -2920% (2024).
Chart 4EPS Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| Azitra, Inc. (AZTR) | -3.33 | -2.25 | +32.5% |
| Synlogic, Inc. (SYBX) | -8.83 | -1.92 | +78.3% |
Chart 5Free Cash Flow — 5 Years
Azitra, Inc. generated $-11B FCF in 2025 (-128900% vs 2021). Synlogic, Inc. generated $-32M FCF in 2024 (+40% vs 2021).
AZTR vs SYBX: Frequently Asked Questions
6 questions · data-driven answers · updated daily
01Which is the better long-term investment — AZTR or SYBX?
Over the past 5 years, Synlogic, Inc. (SYBX) delivered a total return of -98.8%, compared to -100.0% for Azitra, Inc. (AZTR). A $10,000 investment in SYBX five years ago would be worth approximately $117 today (assuming dividends reinvested). Over 10 years, the gap is even starker: SYBX returned -98.0% versus AZTR's -100.0%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.
02Which is safer — AZTR or SYBX?
By beta (market sensitivity over 5 years), Azitra, Inc. (AZTR) is the lower-risk stock at 0.65β versus Synlogic, Inc.'s 0.97β — meaning SYBX is approximately 50% more volatile than AZTR relative to the S&P 500.
03Which has better profit margins — AZTR or SYBX?
Azitra, Inc. (AZTR) is the more profitable company, earning 0.0% net margin versus -2919.9% for Synlogic, Inc. — meaning it keeps 0.0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AZTR leads at 0.0% versus -5118.8% for SYBX. At the gross margin level — before operating expenses — SYBX 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.
04Which pays a better dividend — AZTR or SYBX?
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.
05Is AZTR or SYBX better for a retirement portfolio?
For long-horizon retirement investors, Azitra, Inc. (AZTR) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.65)). Both have compounded well over 10 years (AZTR: -100.0%, SYBX: -98.0%), 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.
06What are the main differences between AZTR and SYBX?
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.
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