Shares of PT Armidian Karyautama (ARMY), engages in construction, services, and trade, gained 50% to Rp450 per share in its trading debut this morning. It offered 1.64 billion shares to public, priced at Rp300, raising proceeds of Rp491.25 billion. ARMY suffered loss of Rp14 billion last year on revenues of Rp14 billion.