danh sách HN30
ACB, SQC, PVI, PVS, SHB, VCG, NVB, HBB, PVX, KLS
NTP, OCH VNR, LAS, BVS, VND, PGS, PLC,DBC, SCR
VCS, FLC, CTS, PVC, HGM, SHS, HBS, HBS, BTS, PTI, HOM