The 2016 Trading Technology 40: John Mackay (Mack) Gill
No. 18 John Mackay (Mack) Gill, Chief Executive Officer, MillenniumIT
December 17, 2025
Contact Info
New York
1270 Avenue of the Americas, Suite 1100
New York, NY 10020
P: +1 212 224 3300
London
4 Bouverie Street
London EC4Y 8AX
P: +44 207 779 8888
Hong Kong
Unit 2488, 24/F
Lee Garden One,
33 Hysan Avenue
Causeway Bay, Hong Kong
P: +852 2912 8001
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