Critical Metals (CRML) stock rose 19% to $7.91 on Tuesday, even as the rare earth and strategic metals ETF (REMX) fell 2% and peers like MP Materials and United States Antimony gained less than 2%. The move was not due to a confirmed company announcement, and traders generally attributed it to market positioning related to Critical Metals' previously announced $835 million acquisition of European Lithium, which was agreed to in April and became a binding agreement in May.