 Tencent Holdings HKG:0700, OTC:TCEHY, the Chinese tech giant that owns stakes in Activision Blizzard, Snap and Universal Music, has done an about-face by going from a net investor in the digital economy to a seller of some of its investments. It has done so by unveiling plans to offload around US14.5bn of its US88bn of listed assets, which will send tremors through the sector. 