Investors questioned whether combining AstraZeneca with Bristol Myers would strengthen growth enough to justify the financial and regulatory risks.
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One of the largest global pharma companies would be created if a deal were to materialise.
The merger would be one of the biggest pharma deals ever. AstraZeneca’s market capitalization stood at $264 billion as of Friday’s close, while Bristol Myers Squibb had a total valuation of $133 billion.
U.S. stocks were on track to extend Friday’s rally as President Trump said he had canceled planned strikes on Iran, adding that peace talks would resume Monday afternoon.
If maintained until close, the decline would be the stock’s biggest one-day percentage fall since the day of the 2024 U.S. presidential election.
June 30 (Reuters) - A bipartisan group of U. lawmakers has opened national security investigations into whether drugmakers Merck and AbbVie have been involved in clinical trials conducted in China that helped fuel the communist country's military capability, according to letters seen by Reuters.
Shares of Regeneron Pharmaceuticals are down about 11%, dragging the Nasdaq composite, after the company’s experimental melanoma drug failed a pivotal clinical trial. The company said that its drug fianlimab, when combined with an approved cancer drug, didn't keep patients’ disease from worsening significantly longer than Merck’s Keytruda.
Shares tumbled after the drugmaker said a late-stage clinical trial of a skin cancer medication fell short of its target.