Alibaba is trading down over 50% in the past 12 months. Its New York-listed shares (NYSE:BABA) are also down in a similar range. But the Chinese tech giant hasn't been alone in its losses. Increased regulatory scrutiny towards major tech firms in the mainland has also dented peers such as Tencent (HK:0700) and Baidu (HK:9888)- the other two components of China's BAT trio. Tencent, which is trading down 30% over the past year, is set to report its earnings later in the month.