USA Rare Earth stock rose early Wednesday after the company announced U.K. approval for its purchase of Less Common Metals. USA Rare Earth stock was up 1.2% at $17.98 in early trading, while the and gained 0.2% and 0.5%, respectively. The company, which is developing a rare-earth mine in Texas, agreed to buy Less Common Metals, a U.K.-based manufacturer of specialized rare earth metals and alloys, for $100 million and 6.74 million shares in September.