Comprehensive Stock Comparison
Compare Azitra, Inc. (AZTR) vs Vertex Pharmaceuticals Incorporated (VRTX) 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 |  VRTX | 8.9% revenue growth vs AZTR's -100.0% |
| Stability / Safety | VRTX | Beta 0.44 vs AZTR's 0.65 |
| Dividends | Tie | Neither pays a meaningful dividend |
| Momentum (1Y) | VRTX | -2.8% vs AZTR's -91.7% |
| Efficiency (ROA) | VRTX | 14.8% ROA vs AZTR's -0.2%, ROIC 22.8% vs -0.8% |
Who Each Stock Is For
Income & stability
VRTXbeta 0.44
Growth exposure
VRTXRev growth 8.9%, EPS growth 8.4%, 3Y rev CAGR 10.4%
Long-term compounding (10Y)
VRTX425.4% 10Y total return vs AZTR's -100.0%
Sleep-well-at-night portfolio
VRTXLower volatility, beta 0.44, Low D/E 19.8%, current ratio 2.90x
Defensive / Recession hedge
VRTXBeta 0.44, current ratio 2.90x
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.
Vertex Pharmaceuticals is a biotechnology company focused on developing and commercializing transformative medicines for serious diseases, with its flagship franchise targeting cystic fibrosis. It generates nearly all its revenue from CF therapies — primarily Trikafta/Kaftrio — while building a pipeline in pain, kidney disease, and type 1 diabetes. Its moat stems from deep scientific expertise in CFTR biology and a dominant, near-monopoly position in the CF treatment market.
Revenue Breakdown by Segment
How each company's revenue is distributed across its business units
Segment breakdown not available.
Financial Metrics Comparison
Side-by-side fundamentals across 2 stocks. BestLagging
Financial Scorecard
VRTX 4
AZTR 1VRTX1/1 metricsAZTR2/2 metricsVRTX6/9 metricsVRTX6/6 metricsVRTX2/2 metricsVRTX leads in 4 of 6 categories (Financial Metrics, Profitability & Efficiency). AZTR leads in 1 (Valuation Metrics).
Financial Metrics (TTM)
VRTX and AZTR operate at a comparable scale, with $11.7B and $0 in trailing revenue.
| Metric | AZTRAzitra, Inc. | VRTXVertex Pharmaceut… |
|---|---|---|
| RevenueTrailing 12 months | $0 | $11.7B |
| EBITDAEarnings before interest/tax | -$11M | $4.2B |
| Net IncomeAfter-tax profit | -$11M | $3.7B |
| Free Cash FlowCash after capex | -$86M | $3.3B |
| Gross MarginGross profit ÷ Revenue | — | +86.3% |
| Operating MarginEBIT ÷ Revenue | — | +34.1% |
| Net MarginNet income ÷ Revenue | — | +31.3% |
| FCF MarginFCF ÷ Revenue | — | +28.5% |
| Rev. Growth (YoY)Latest quarter vs prior year | — | +11.0% |
| EPS Growth (YoY)Latest quarter vs prior year | -6.9% | +4.7% |
Valuation Metrics
| Metric | AZTRAzitra, Inc. | VRTXVertex Pharmaceut… |
|---|---|---|
| Market CapShares × price | $2M | $121.4B |
| Enterprise ValueMkt cap + debt − cash | -$1.6B | $120.0B |
| Trailing P/EPrice ÷ TTM EPS | -0.08x | 31.19x |
| Forward P/EPrice ÷ next-FY EPS est. | — | 24.68x |
| PEG RatioP/E ÷ EPS growth rate | — | 3.77x |
| EV / EBITDAEnterprise value multiple | — | 25.60x |
| Price / SalesMarket cap ÷ Revenue | — | 10.11x |
| Price / BookPrice ÷ Book value/share | 0.00x | 6.61x |
| Price / FCFMarket cap ÷ FCF | — | 38.01x |
Profitability & Efficiency
VRTX delivers a 21.2% return on equity — every $100 of shareholder capital generates $21 in annual profit, vs $-0 for AZTR. AZTR carries lower financial leverage with a 0.11x debt-to-equity ratio, signaling a more conservative balance sheet compared to VRTX's 0.20x. On the Piotroski fundamental quality scale (0–9), VRTX scores 5/9 vs AZTR's 1/9, reflecting solid financial health.
| Metric | AZTRAzitra, Inc. | VRTXVertex Pharmaceut… |
|---|---|---|
| ROE (TTM)Return on equity | -0.3% | +21.2% |
| ROA (TTM)Return on assets | -0.2% | +14.8% |
| ROICReturn on invested capital | -0.8% | +22.8% |
| ROCEReturn on capital employed | -0.6% | +23.0% |
| Piotroski ScoreFundamental quality 0–9 | 1 | 5 |
| Debt / EquityFinancial leverage | 0.11x | 0.20x |
| Net DebtTotal debt minus cash | -$1.6B | $3.7B |
| Cash & Equiv.Liquid assets | $2.1B | $5.1B |
| Total DebtShort + long-term debt | $422M | $3.7B |
| Interest CoverageEBIT ÷ Interest expense | -13.79x | 348.55x |
Total Returns (with DRIP)
A $10,000 investment in VRTX five years ago would be worth $22,544 today (with dividends reinvested), compared to $2 for AZTR. Over the past 12 months, VRTX leads with a -2.8% total return vs AZTR's -91.7%. The 3-year compound annual growth rate (CAGR) favors VRTX at 17.9% vs AZTR's -94.2% — a key indicator of consistent wealth creation.
| Metric | AZTRAzitra, Inc. | VRTXVertex Pharmaceut… |
|---|---|---|
| YTD ReturnYear-to-date | -32.1% | +5.7% |
| 1-Year ReturnPast 12 months | -91.7% | -2.8% |
| 3-Year ReturnCumulative with dividends | -100.0% | +63.9% |
| 5-Year ReturnCumulative with dividends | -100.0% | +125.4% |
| 10-Year ReturnCumulative with dividends | -100.0% | +425.4% |
| CAGR (3Y)Annualised 3-year return | -94.2% | +17.9% |
Risk & Volatility
VRTX is the less volatile stock with a 0.44 beta — it tends to amplify market swings less than AZTR's 0.65 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. VRTX currently trades 92.0% 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. | VRTXVertex Pharmaceut… |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 0.65x | 0.44x |
| 52-Week HighHighest price in past year | $2.66 | $519.68 |
| 52-Week LowLowest price in past year | $0.15 | $362.50 |
| % of 52W HighCurrent price vs 52-week peak | +7.1% | +92.0% |
| RSI (14)Momentum oscillator 0–100 | 35.7 | 50.0 |
| Avg Volume (50D)Average daily shares traded | 1.4M | 1.4M |
Analyst Outlook
| Metric | AZTRAzitra, Inc. | VRTXVertex Pharmaceut… |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | — | Buy |
| Price TargetConsensus 12-month target | — | $545.08 |
| # AnalystsCovering analysts | — | 55 |
| Dividend YieldAnnual dividend ÷ price | — | — |
| Dividend StreakConsecutive years of raises | — | — |
| Dividend / ShareAnnual DPS | — | — |
| Buyback YieldShare repurchases ÷ mkt cap | 0.0% | +1.7% |
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% |
| Vertex Pharmaceutic… (VRTX) | 100 | 139.84 | +39.8% |
Vertex Pharmaceutic… (VRTX) returned +125% over 5 years vs Azitra, Inc. (AZTR)'s -100%. A $10,000 investment in VRTX 5 years ago would be worth $22,544 today (including dividends reinvested).
Chart 2Revenue Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| Azitra, Inc. (AZTR) | $110000.00 | $0.00 | -100.0% |
| Vertex Pharmaceutic… (VRTX) | $1.7B | $12.0B | +605.1% |
Vertex Pharmaceuticals Incorporated's revenue grew from $1.7B (2016) to $12.0B (2025) — a 24.2% CAGR.
Chart 3Net Margin Trend — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| Azitra, Inc. (AZTR) | -81.3% | -119.6% | -47.1% |
| Vertex Pharmaceutic… (VRTX) | -6.6% | 32.9% | +600.4% |
Vertex Pharmaceuticals Incorporated's net margin went from -7% (2016) to 33% (2025).
Chart 4P/E Ratio History — 8 Years
| Stock | 2017 | 2025 | Change |
|---|---|---|---|
| Vertex Pharmaceutic… (VRTX) | 144.1 | 29.6 | -79.5% |
Vertex Pharmaceuticals Incorporated has traded in a 21x–144x P/E range over 8 years; current trailing P/E is ~31x.
Chart 5EPS Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| Azitra, Inc. (AZTR) | -3.33 | -2.25 | +32.5% |
| Vertex Pharmaceutic… (VRTX) | -0.46 | 15.32 | +3430.4% |
Vertex Pharmaceuticals Incorporated's EPS grew from $-0.46 (2016) to $15.32 (2025).
Chart 6Free Cash Flow — 5 Years
Azitra, Inc. generated $-11B FCF in 2025 (-128900% vs 2021). Vertex Pharmaceuticals Incorporated generated $3B FCF in 2025 (+33% vs 2021).
AZTR vs VRTX: Frequently Asked Questions
7 questions · data-driven answers · updated daily
01Is AZTR or VRTX a better buy right now?
Vertex Pharmaceuticals Incorporated (VRTX) offers the better valuation at 31.2x trailing P/E (24.7x forward), making it the more compelling value choice. Analysts rate Vertex Pharmaceuticals Incorporated (VRTX) a "Buy" — based on 55 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.
02Which is the better long-term investment — AZTR or VRTX?
Over the past 5 years, Vertex Pharmaceuticals Incorporated (VRTX) delivered a total return of +125.4%, compared to -100.0% for Azitra, Inc. (AZTR). A $10,000 investment in VRTX five years ago would be worth approximately $23K today (assuming dividends reinvested). Over 10 years, the gap is even starker: VRTX returned +425.4% 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.
03Which is safer — AZTR or VRTX?
By beta (market sensitivity over 5 years), Vertex Pharmaceuticals Incorporated (VRTX) is the lower-risk stock at 0.44β versus Azitra, Inc.'s 0.65β — meaning AZTR is approximately 47% more volatile than VRTX relative to the S&P 500. On balance sheet safety, Azitra, Inc. (AZTR) carries a lower debt/equity ratio of 11% versus 20% for Vertex Pharmaceuticals Incorporated — giving it more financial flexibility in a downturn.
04Which has better profit margins — AZTR or VRTX?
Vertex Pharmaceuticals Incorporated (VRTX) is the more profitable company, earning 32.9% net margin versus 0.0% for Azitra, Inc. — meaning it keeps 32.9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: VRTX leads at 39.1% versus 0.0% for AZTR. At the gross margin level — before operating expenses — VRTX leads at 86.2%, 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.
05Which pays a better dividend — AZTR or VRTX?
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.
06Is AZTR or VRTX better for a retirement portfolio?
For long-horizon retirement investors, Vertex Pharmaceuticals Incorporated (VRTX) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.44), +425.4% 10Y return). Both have compounded well over 10 years (VRTX: +425.4%, AZTR: -100.0%), 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.
07What are the main differences between AZTR and VRTX?
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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