['DATE | this_year', 'LOC | Chinese', 'ORG | Bloomberg', 'ORG | Tencent_Holdings', 'stockChange | 14_per_cent', 'stockChange | gain', 'stockChange | rise']
Chinese social-media juggernaut Tencent Holdings contributed the most to the gain on the benchmark this year, with the stock alone accounting for 14 per cent of the index’s rise, Bloomberg data showed.