Shares of Skytrain operator BTS Group Holdings Plc nosedived on Monday while the future of express bus operator BRT is hanging in the balance in the wake of Chadchart Sittipunt’s victory in the Bangkok governor election. BTS shares were down 25 satang – 2.78% – to close at 8.75 baht, whereas the SET index gained 12.33 points or 0.76% to end the day at 1,635.28. Analysts said BTS share prices came under pressure because of the former transport minister’s pre-election comments on the future of the Green Line. Mr Chadchart easily won the gubernatorial election on Sunday with 1,386,215 votes – the…