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Merck & CompanyMRKBUYAug 19, 2026Stock price when the opinion was issued
As of Aug 21, 2026. Market Open.
Keytruda makes up half of sales, which makes the market nervous, because the drug faces a patent cliff in a few years. Their pipeline is deep, and the acquisitions they made will replenish that pipeline. Even when it goes off-patent, Keytruda will remain a preferred drug by doctors.
Today's downward move isn't all that outsized. There's been more clarity on US drug pricing. Seeing a bit of market exhaustion, as US pharma is trading at huge premiums relative to their own history.
Rerating from pricing clarity has already been baked in. R&D pipeline in the sector is a mixed bag, doesn't trust it.
He hopes the good news (melanoma treatment) is the start of a wave of drugs to tackle cancer. Keytruda could be extended beyond 2028 (when it goes off patent) if it holds other uses. This is a huge day for society.