Tencent, surprisingly, is 33% owned by the South African company Naspers, as well as 7% other foreign institutional investors. Alibaba is 30% owned by the Japanese Softbank and 15% owned by a US holding company resultant of Yahoo's sale. [2] Baidu is 35%+ held by a hodgepodge of funds and holding companies. [3]

[1] http://www.4-traders.com/TENCENT-HOLDINGS-LTD-3045861/compan...

[2] http://www.4-traders.com/ALIBABA-GROUP-HOLDING-17916677/comp...

[3] http://investors.morningstar.com/ownership/shareholders-majo...