Smart Invest Securities Joint Stock Company acquired an 14.12% stake in Viet Tien Son Real Estate Holding Company (HNX:AAV) on April 4, 2019. Smart Invest Securities acquired 4.5 million shares. Smart Invest Securities Joint Stock Company completed the acquisition of an 14.12% stake in Viet Tien Son Real Estate Holding Company (HNX:AAV) on April 4, 2019.