Empire Metals is trading 5.14% up at £37.85, with no fresh catalyst identified for the move. - No new company announcement or explicit report linking a September 29 move to a fresh catalyst was found. - The latest company news was September 24 testwork producing uncoated rutile pigment from Pitfield ore. It may be relevant background, but the evidence does not establish it caused the rise. - Materials-sector weakness was also reported, so it does not explain the gain.