Shan Ahmed Khan

As a journalist focused on finance and the stock market, he delivers fast, reliable, and easy-to-understand coverage of market news.

Ultragenyx stock sinks 42% after Phase 3 setrusumab miss; what RARE investors watch nextNEW YORK, December 29, 2025, 23:21 ET — Market closed

Ultragenyx stock sinks 42% after Phase 3 setrusumab miss; what RARE investors watch nextNEW YORK, December 29, 2025, 23:21 ET — Market closed

Ultragenyx Pharmaceutical Inc shares slid on Monday after the company said two late-stage studies of setrusumab for osteogenesis imperfecta missed their primary fracture-reduction goal, prompting plans for significant expense reductions. “We are surprised and disappointed by these results,” Chief Executive
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