🟢 Mirum Pharmaceuticals is trading 5% up today in pre-market with no clear catalyst

Mirum Pharmaceuticals is trading 4.84% up now at $105.50, with no new company-specific announcement identified for September 4, 2026.

• Latest major catalyst remains its August 5 second-quarter update, which included stronger revenue and raised 2026 sales guidance but delayed the volixibat PSC filing to the first half of 2027.
• The broader market is slightly lower before the U.S. jobs report, so macro sentiment does not clearly explain the move; the pre-market rise appears catalyst-uncertain.