ECLOSE

Insurance and Financial

Owner

ASHTON TECHNOLOGY GROUP, INC.

ECLOSE PRICE

Insurance and Financial

Owner

ASHTON TECHNOLOGY GROUP, INC.

ECLOSE SESSION

Insurance and Financial

Owner

ASHTON TECHNOLOGY GROUP, INC.

IMATCH TRADING SYSTEM

Insurance and Financial

Owner

ASHTON TECHNOLOGY GROUP, INC.

IMATCH

Insurance and Financial

Owner

ASHTON TECHNOLOGY GROUP, INC.

EMC

Computer and Scientific

Owner

ASHTON TECHNOLOGY GROUP, INC.

EMC ELECTRONIC MARKET CENTER, INC.

Computer and Scientific

Owner

ASHTON TECHNOLOGY GROUP, INC.

EMC

Computer and Scientific

Owner

ASHTON TECHNOLOGY GROUP, INC.

RAID

Insurance and Financial

Owner

ASHTON TECHNOLOGY GROUP, INC.

EMC

Computer and Scientific

Owner

ASHTON TECHNOLOGY GROUP, INC.