Big US pharma stocks rise as Street reacts to Trump's tariff on drugs

Shares of some big drugmakers advanced above broader indexes Friday as Wall Street started sorting out President Donald Trump's latest tariff announcement.

Shares of Merck, Lilly and J&J all rose less than 1% in midday trading Friday, slightly higher than the S&P 500 index.

The president said late Thursday that he would place 100% import taxes on branded or patented pharmaceuticals starting Oct. 1, but those tariffs would not apply to companies building U.S. manufacturing plants. He defined that as either "breaking ground" or being "under construction."


Several big drugmakers like Merck & Co. Inc., Eli Lilly and Co. and Johnson & Johnson have announced U.S. expansion plans.

Trump has talked about pharmaceutical tariffs for months, but he has said he would delay them for a year or a year and a half to give companies time to stockpile medicines here and shift manufacturing.

Analysts have said companies started stockpiling medicines in the U.S. earlier this year.

Jefferies analyst Akash Tewari said in a research note that Thursday's announcement shouldn't have a material impact on the big drugmakers, given their construction plans.

Brand-name drug companies also have fat profit margins that can provide some flexibility to make investments and absorb tariff costs. Manufacturers of cheaper generic drugs, which were not mentioned in Thursday's announcement, do not. Generics account for most U.S. prescriptions.

David Risinger of Leerink Partners said smaller drugmakers may be vulnerable to the new taxes, although he noted that it was hard to predict which ones.

He said several questions remain unanswered after Thursday's announcement. Those include whether the action will survive legal challenges and how the phrases "breaking ground" and "under construction" are defined for tariff enforcement.

Risinger also questioned whether the new taxes might be a negotiating tactic tied to an investigation the administration launched in the spring over how importing drugs and their ingredients affects national security.