BCHT ▲ +0.8% - Birchtech Corp. $BCHT - Birchtech Reaches Agreement in Principle for Strategic Acquisition of Specialty Activated Carbon Company Birchtech Corp. rose 0.8% after announcing it has reached an agreement in principle to acquire a specialty activated carbon company, a move that expands its portfolio in the activated carbon market and could enhance its competitive position in that segment. 08-SEP-2026 08:31 AM ET