A direct manual trade of 1.81 million shares of ISHARES A50 (02823) was registered at 2:48p.m.
The deal amounted to HK$26.28m, or at HK$14.56 per share, 2% lower than previous close.
ISHARES A50 is now trading down 1.95% to HK$14.56, with 8.24 million shares of HK$121.36m changing hands.