	investment group raises robeson rbsn stake a group of affiliated miami based investment firms led by fundamental management corp said it raised its stake in robeson industries corp to shares or pct of the total from or pct in a filing with the securities and exchange commission the group said it bought robeson common shares between jan and feb for dlrs the group said it may buy more shares and plans to study robeson s operations afterwards it may recommend that management make changes in its operations fundamental management chairman carl singer was recently elected to the robeson board reuter 
