PTC Therapeutics vs Merck: Which Is the Stronger Buy Today?

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Trefis
MRK: Merck logo
MRK
Merck

Merck surged 16% during the past Month. You may be tempted to buy more, or may want to reduce your exposure. But there is an entirely different perspective you might be missing. Is there a better alternative? Turns out, its peer PTC Therapeutics gives you more. PTC Therapeutics (PTCT) stock offers superior revenue growth across key periods, better profitability, and relatively lower valuation vs Merck (MRK) stock, suggesting you may be better off investing in PTCT

  • PTCT’s quarterly revenue growth was 7.2%, vs. MRK’s 5.0%.
  • In addition, its Last 12 Months revenue growth came in at 97.5%, ahead of MRK’s 1.3%.
  • PTCT’s LTM margin is higher: 51.8% vs. MRK’s 34.0%.

These differences become even clearer when you look at the financials side by side. The table highlights how MRK’s fundamentals stack up against those of PTCT on growth, margins, momentum, and valuation multiples.

Trefis: MRK Stock Insights

Valuation & Performance Overview

  MRK PTCT Preferred
     
Valuation      
P/EBIT Ratio 13.9 5.8 PTCT
     
Revenue Growth      
Last Quarter 5.0% 7.2% PTCT
Last 12 Months 1.3% 97.5% PTCT
Last 3 Year Average 3.2% 41.7% PTCT
     
Operating Margins      
Last 12 Months 34.0% 51.8% PTCT
Last 3 Year Average 23.5% -8.9% MRK
     
Momentum      
Last 3 Year Return 24.1% 61.6% PTCT

Note: For “Last 3 Year Return” metric, preferred stock is one with higher returns unless the returns are too high (>300%) which creates risk of sell off.
See more revenue details: MRK Revenue Comparison | PTCT Revenue Comparison
See more margin details: MRK Operating Income Comparison | PTCT Operating Income Comparison

Relevant Articles
  1. Why Merck Stock Jumped 70%?
  2. Why Merck Stock Jumped 60%?
  3. Buy or Sell Merck Stock?
  4. Why Merck Stock Jumped 40%?
  5. Merck Stock Capital Return Hits $91 Bil
  6. What’s In Store For Merck Stock?

See detailed fundamentals on Buy or Sell PTCT Stock and Buy or Sell MRK Stock. Below we compare market return and related metrics across years.

Historical Market Performance

  2021 2022 2023 2024 2025 2026 Total [1] Avg Best
Returns
MRK Return 2% 49% 1% -6% 10% 13% 79%    
PTCT Return -35% -4% -28% 64% 68% -10% 12%    
S&P 500 Return 27% -19% 24% 23% 16% 1% 84%   <===
Monthly Win Rates [3]
MRK Win Rate 42% 67% 42% 33% 50% 100%   56%  
PTCT Win Rate 33% 58% 42% 83% 58% 0%   46%  
S&P 500 Win Rate 75% 42% 67% 75% 67% 50%   62% <===
Max Drawdowns [4]
MRK Max Drawdown -12% -4% -8% -10% -26% 0%   -10%  
PTCT Max Drawdown -42% -36% -53% -12% -20% -11%   -29%  
S&P 500 Max Drawdown -1% -25% -1% -2% -15% -1%   -7% <===

[1] Cumulative total returns since the beginning of 2021
[2] 2026 data is for the year up to 2/27/2026 (YTD)
[3] Win Rate = % of calendar months in which monthly returns were positive
[4] Max drawdown represents maximum peak-to-trough decline within a year

No matter how good the numbers, stock investment is never a smooth ride. There is a risk you must factor in. Read PTCT Dip Buyer Analyses to see how the stock has fallen and recovered in the past.

Still not sure about MRK or PTCT? Consider portfolio approach.

Portfolios Over Individual Stock Picks

Stocks soar and sink – the key is staying invested. A balanced portfolio helps you ride market volatility, boosts gains and reduces single stock risk.

Why settle for average market returns? The Trefis High Quality (HQ) Portfolio invests in a diverse group of 30 stocks that have collectively delivered stronger upside with reduced volatility compared to the broader indices. Discover the methodology behind these smoother, higher returns by checking the HQ Portfolio performance data.