A direct manual trade of 725,000 shares of AIA (01299) was registered at 3:48p.m.
The deal amounted to HK$50.66m, or at HK$69.875 per share, 2.6% higher than previous close.
AIA is now trading up 2.57% to HK$69.85, with 35.02 million shares of HK$2.44b changing hands.