Comprehensive Stock Comparison
Compare PTC Therapeutics, Inc. (PTCT) 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 | PTCT | 114.5% revenue growth vs VRTX's 8.9% |
| Value | PTCT | Lower P/E (8.8x vs 25.7x) |
| Quality / Margins | PTCT | 42.3% net margin vs VRTX's 31.3% |
| Stability / Safety | VRTX | Beta 0.44 vs PTCT's 0.91 |
| Dividends | Tie | Neither pays a meaningful dividend |
| Momentum (1Y) | PTCT | +23.4% vs VRTX's +3.6% |
| Efficiency (ROA) | PTCT | 28.4% ROA vs VRTX's 14.8% |
Who Each Stock Is For
Income & stability
Growth exposure
Long-term compounding (10Y)
Sleep-well-at-night portfolio
Defensive / Recession hedge
Business Model
What each company does and how it makes money
PTC Therapeutics is a biopharmaceutical company that develops and commercializes treatments for rare genetic disorders. It generates revenue primarily from sales of its approved therapies for Duchenne muscular dystrophy and spinal muscular atrophy — with additional income from collaborations and licensing agreements. The company's competitive advantage lies in its proprietary RNA-targeting and splicing technologies that enable it to address previously untreatable genetic mutations.
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
Financial Metrics Comparison
Side-by-side fundamentals across 2 stocks. BestLagging
Financial Scorecard
PTCT leads in 3 of 6 categories (Financial Metrics, Valuation Metrics). VRTX leads in 2 (Total Returns, Risk & Volatility).
Financial Metrics (TTM)
VRTX is the larger business by revenue, generating $11.7B annually — 6.6x PTCT's $1.8B. PTCT is the more profitable business, keeping 42.3% of every revenue dollar as net income compared to VRTX's 31.3%. On growth, VRTX holds the edge at +11.0% YoY revenue growth, suggesting stronger near-term business momentum.
| Metric | PTCTPTC Therapeutics,… | VRTXVertex Pharmaceut… |
|---|---|---|
| RevenueTrailing 12 months | $1.8B | $11.7B |
| EBITDAEarnings before interest/tax | $809M | $4.2B |
| Net IncomeAfter-tax profit | $752M | $3.7B |
| Free Cash FlowCash after capex | $699M | $3.3B |
| Gross MarginGross profit ÷ Revenue | +91.2% | +86.3% |
| Operating MarginEBIT ÷ Revenue | +43.6% | +34.1% |
| Net MarginNet income ÷ Revenue | +42.3% | +31.3% |
| FCF MarginFCF ÷ Revenue | +39.3% | +28.5% |
| Rev. Growth (YoY)Latest quarter vs prior year | +7.2% | +11.0% |
| EPS Growth (YoY)Latest quarter vs prior year | +114.4% | +4.7% |
Valuation Metrics
At 8.8x trailing earnings, PTCT trades at a 73% valuation discount to VRTX's 32.4x P/E. On an enterprise value basis, PTCT's 5.6x EV/EBITDA is more attractive than VRTX's 26.6x.
| Metric | PTCTPTC Therapeutics,… | VRTXVertex Pharmaceut… |
|---|---|---|
| Market CapShares × price | $5.5B | $126.2B |
| Enterprise ValueMkt cap + debt − cash | $4.9B | $124.8B |
| Trailing P/EPrice ÷ TTM EPS | 8.76x | 32.43x |
| Forward P/EPrice ÷ next-FY EPS est. | — | 25.66x |
| PEG RatioP/E ÷ EPS growth rate | — | 3.91x |
| EV / EBITDAEnterprise value multiple | 5.61x | 26.63x |
| Price / SalesMarket cap ÷ Revenue | 3.15x | 10.52x |
| Price / BookPrice ÷ Book value/share | — | 6.87x |
| Price / FCFMarket cap ÷ FCF | — | 39.51x |
Profitability & Efficiency
On the Piotroski fundamental quality scale (0–9), VRTX scores 5/9 vs PTCT's 4/9, reflecting solid financial health.
| Metric | PTCTPTC Therapeutics,… | VRTXVertex Pharmaceut… |
|---|---|---|
| ROE (TTM)Return on equity | — | +21.2% |
| ROA (TTM)Return on assets | +28.4% | +14.8% |
| ROICReturn on invested capital | — | +22.8% |
| ROCEReturn on capital employed | +56.8% | +23.0% |
| Piotroski ScoreFundamental quality 0–9 | 4 | 5 |
| Debt / EquityFinancial leverage | — | 0.20x |
| Net DebtTotal debt minus cash | -$586M | $3.7B |
| Cash & Equiv.Liquid assets | $985M | $5.1B |
| Total DebtShort + long-term debt | $399M | $3.7B |
| Interest CoverageEBIT ÷ Interest expense | 6.37x | 348.55x |
Total Returns (with DRIP)
A $10,000 investment in VRTX five years ago would be worth $23,616 today (with dividends reinvested), compared to $11,725 for PTCT. Over the past 12 months, PTCT leads with a +23.4% total return vs VRTX's +3.6%. The 3-year compound annual growth rate (CAGR) favors VRTX at 19.6% vs PTCT's 16.0% — a key indicator of consistent wealth creation.
| Metric | PTCTPTC Therapeutics,… | VRTXVertex Pharmaceut… |
|---|---|---|
| YTD ReturnYear-to-date | -11.1% | +9.9% |
| 1-Year ReturnPast 12 months | +23.4% | +3.6% |
| 3-Year ReturnCumulative with dividends | +56.1% | +71.1% |
| 5-Year ReturnCumulative with dividends | +17.2% | +136.2% |
| 10-Year ReturnCumulative with dividends | +754.5% | +481.2% |
| CAGR (3Y)Annualised 3-year return | +16.0% | +19.6% |
Risk & Volatility
VRTX is the less volatile stock with a 0.44 beta — it tends to amplify market swings less than PTCT's 0.91 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. VRTX currently trades 95.6% from its 52-week high vs PTCT's 77.9% drawdown — a narrower gap to the peak suggests stronger recent price momentum.
| Metric | PTCTPTC Therapeutics,… | VRTXVertex Pharmaceut… |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 0.91x | 0.44x |
| 52-Week HighHighest price in past year | $87.50 | $519.68 |
| 52-Week LowLowest price in past year | $35.95 | $362.50 |
| % of 52W HighCurrent price vs 52-week peak | +77.9% | +95.6% |
| RSI (14)Momentum oscillator 0–100 | 35.0 | 54.6 |
| Avg Volume (50D)Average daily shares traded | 994K | 1.2M |
Analyst Outlook
Wall Street rates PTCT as "Buy" and VRTX as "Buy". Consensus price targets imply 23.9% upside for PTCT (target: $85) vs 9.7% for VRTX (target: $545).
| Metric | PTCTPTC Therapeutics,… | VRTXVertex Pharmaceut… |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | Buy | Buy |
| Price TargetConsensus 12-month target | $84.50 | $545.08 |
| # AnalystsCovering analysts | 26 | 55 |
| Dividend YieldAnnual dividend ÷ price | — | — |
| Dividend StreakConsecutive years of raises | — | — |
| Dividend / ShareAnnual DPS | — | — |
| Buyback YieldShare repurchases ÷ mkt cap | 0.0% | +1.6% |
Historical Charts
Charts are rendered on first load. Hover for details.
Chart 1Total Return — 5 Years (Rebased to 100)
| Stock | Mar 20 | Feb 26 | Change |
|---|---|---|---|
| PTC Therapeutics, I… (PTCT) | 100 | 136.32 | +36.3% |
| Vertex Pharmaceutic… (VRTX) | 100 | 203.2 | +103.2% |
Vertex Pharmaceutic… (VRTX) returned +136% over 5 years vs PTC Therapeutics, I… (PTCT)'s +17%. A $10,000 investment in VRTX 5 years ago would be worth $23,616 today (including dividends reinvested).
Chart 2Revenue Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| PTC Therapeutics, I… (PTCT) | $83M | $1.7B | +1992.6% |
| Vertex Pharmaceutic… (VRTX) | $1.7B | $12.0B | +605.1% |
PTC Therapeutics, Inc.'s revenue grew from $83M (2016) to $1.7B (2025) — a 40.2% CAGR. 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 |
|---|---|---|---|
| PTC Therapeutics, I… (PTCT) | -171.8% | 39.4% | +123.0% |
| Vertex Pharmaceutic… (VRTX) | -6.6% | 32.9% | +600.4% |
PTC Therapeutics, Inc.'s net margin went from -172% (2016) to 39% (2025). 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 ~32x.
Chart 5EPS Growth — 10 Years
| Stock | 2016 | 2025 | Change |
|---|---|---|---|
| PTC Therapeutics, I… (PTCT) | -4.17 | 7.78 | +286.6% |
| Vertex Pharmaceutic… (VRTX) | -0.46 | 15.32 | +3430.4% |
PTC Therapeutics, Inc.'s EPS grew from $-4.17 (2016) to $7.78 (2025). Vertex Pharmaceuticals Incorporated's EPS grew from $-0.46 (2016) to $15.32 (2025).
Chart 6Free Cash Flow — 5 Years
PTC Therapeutics, Inc. generated $0M FCF in 2025 (+100% vs 2021). Vertex Pharmaceuticals Incorporated generated $3B FCF in 2025 (+33% vs 2021).
PTCT vs VRTX: Frequently Asked Questions
9 questions · data-driven answers · updated daily
01Is PTCT or VRTX a better buy right now?
PTC Therapeutics, Inc. (PTCT) offers the better valuation at 8.8x trailing P/E, making it the more compelling value choice. Analysts rate PTC Therapeutics, Inc. (PTCT) a "Buy" — based on 26 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 has the better valuation — PTCT or VRTX?
On trailing P/E, PTC Therapeutics, Inc. (PTCT) is the cheapest at 8.8x versus Vertex Pharmaceuticals Incorporated at 32.4x.
03Which is the better long-term investment — PTCT or VRTX?
Over the past 5 years, Vertex Pharmaceuticals Incorporated (VRTX) delivered a total return of +136.2%, compared to +17.2% for PTC Therapeutics, Inc. (PTCT). A $10,000 investment in VRTX five years ago would be worth approximately $24K today (assuming dividends reinvested). Over 10 years, the gap is even starker: PTCT returned +754.5% versus VRTX's +481.2%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.
04Which is safer — PTCT or VRTX?
By beta (market sensitivity over 5 years), Vertex Pharmaceuticals Incorporated (VRTX) is the lower-risk stock at 0.44β versus PTC Therapeutics, Inc.'s 0.91β — meaning PTCT is approximately 107% more volatile than VRTX relative to the S&P 500.
05Which has better profit margins — PTCT or VRTX?
PTC Therapeutics, Inc. (PTCT) is the more profitable company, earning 39.4% net margin versus 32.9% for Vertex Pharmaceuticals Incorporated — meaning it keeps 39.4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: PTCT leads at 50.1% versus 39.1% for VRTX. At the gross margin level — before operating expenses — PTCT leads at 91.2%, 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.
06Is PTCT or VRTX more undervalued right now?
Analyst consensus price targets imply the most upside for PTCT: 23.9% to $84.50.
07Which pays a better dividend — PTCT 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.
08Is PTCT 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), +481.2% 10Y return). Both have compounded well over 10 years (VRTX: +481.2%, PTCT: +754.5%), 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.
09What are the main differences between PTCT 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. In terms of investment character: PTCT is a small-cap deep-value stock; VRTX is a mid-cap quality compounder 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.
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