Between 3/15 and 3/24, the trader bought and sold YSG shares. On 3/16, they bought 10 more shares and sold some at a profit. On 3/17, they sold some at an opening price of 1.50. On 3/20, they added and sold more shares, making profits and losses. On 3/21 and 3/22, they added and sold shares at different prices, making profits and losses. On 3/23, they sold half their shares at a loss, and on 3/24, they sold the rest at a small loss.