Financial markets are a complicated jumble of asset classes, to various degrees correlated, liquid and volatile. But all have technology in common, touching everything from investors’ portfolio strategies to the execution of transactions to posttrade settlement and reporting.

For the better part of two decades, trading technology has exploded, both as a line of business and as a critical infrastructure for the global economy. Judging by the Trading Technology 40, Institutional Investor’s annual ranking of the field’s top innovators and visionaries, that long-term trend is accelerating. Building and maintaining systems is only the most basic of these leaders’ responsibilities. They are truly general managers, often overseeing hundreds of employees and, in common with their C-suite peers, dealing with increasing regulatory compliance burdens — all the while staying abreast of, and pushing the envelope with, the latest high-tech advances.

Touching all those bases, Kevin Kometer, chief information officer of CME Group, parent of the Chicago Mercantile Exchange, ranks No. 1 for the second time in the four years of the Trading Tech 40. More than one third of the company’s 2,000-plus employees work in information technology. Kometer says ultralow latency is not the priority it once was, but he notes that “agility to meet the needs and wants of customers” and “delivering faster” are essential for IT.

The scale is different, but the issues similar, at entrepreneurial shops like Broadway Technology (Tyler Moeller and Joshua Walsky, No. 27) and OptionsCity Software (Hazem Dawani, No. 40), which compete for the same talent and must build compliance, capacity and flexibility into their software.

The Trading Technology 40 were selected by Institutional Investor editors, taking into account nominations and other input from industry experts. The leadership criteria include recent and career accomplishments and contributions to individual companies and to the industry at large; scope and complexity of executive responsibilities; and pure technological innovation.

The ranking was compiled under the direction of Senior Contributing Editor Jeffrey Kutler. Individual profiles were written by Kutler; Editor Michael Peltz; Asia Bureau Chief Allen T. Cheng; Senior Writers Frances Denmark, Julie Segal and Aaron Timms; and Associate Editor Kaitlin Ugolik.

 
The 2015 Trading Technology 40Click name to view profile.

1
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2
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3
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4
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5
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Kevin Kometer
CME Group
Richard Prager
BlackRock
Raymond Tierney III
Bloomberg Tradebook
Jonathan Ross
KCG Holdings
Charles Vice
Intercontinental Exchange
6
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7
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Zef Nikolla
8
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9
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10
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Chris Isaacson
BATS Global Markets
Bradley Peterson
Nasdaq OMX Group
Brad Levy
MarkitSERV
Dan Keegan
Citi
Ronald DePoalo
Fidelity Institutional
11
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Mark McQueen
12
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13
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14
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15
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Margaret Fox
Gerard Beatty
Goldman Sachs Group
Gerald O'Connell
CBOE Holdings
Brenda Hoffman
TMX Group
Billy Hult
Tradeweb Markets
Nicholas Themelis
MarketAxess Holdings
16
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17
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18
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Martin H. Simon
19
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Todd Plitt
20
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A.E. Fletcher Photography
Bina Kalola
Bank of America Merrill Lynch
Gil Mandelzis
EBS-BrokerTec (ICAP)
Steven Randich
Financial Industry Regulatory Authority
Jerry Dobner
GFI Group
Michael Liberman
BlueMountain Capital Management
21
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22
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Photographer:http://www.digitalh
23
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24
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Dennis Degnan
25
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Paul Elledge
Bill Chow and Richard Leung
Hong Kong Exchanges and Clearing
Jamie Selway
Investment Technology Group
Brad Katsuyama
IEX Group
John Mackay (Mack) Gill
MillenniumIT
Jamil Nazarali
Citadel Execution Services
26
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27
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28
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Picasa
29
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Andrew Harrer
30
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Takashi KATO
Robert Cornish
International Securities Exchange
Tyler Moeller andJoshua Walksy
Broadway Technology
Rishi Nangalia
REDI Holdings
Manoj Narang
Tradeworx, 
Thesys Technologies
Oki Matsumoto
Monex Group
31
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32
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unknown
33
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Douglas Kurn
34
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Luludi/LUZ
35
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William Neumann Photography
Alasdair Haynes
Aquis Exchange
Veronica Augustsson
Cinnober Financial Technology
Stu Taylor
Algomi
Luís Otávio Saliba Furtado
BM&FBovespa
Tal Cohen
Chi-X Global Holdings
36
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37
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38
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39
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40
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Donal Byrne
Corvil
R. Cromwell Coulson
OTC Markets Group
Alfred Eskandar
Portware
Richard Korhammer
SR Labs
Hazem Dawani
OptionsCity Software