Allston Trading UK Limited
Chopper Trading, LLC
Citadel Securities Europe Ltd.
DRW Investments (UK) Ltd
Flow Traders B.V.
Getco Europe Limited
Hudson River Trading Europe Ltd
IAT International Algorithmic Trading GmbH
IMC Trading B.V.
Jump Trading International Ltd
Knight Capital Europe Limited
Mako Group
Optiver VOF
Positive Equity Ltd.
Quantlab Financial, LLC
RGM Trading Europe Limited
RSJ a.s.
Spire Europe Limited
Sun Trading International Limited
Tibra Trading Europe Limited
Virtu Financial LLC
XR Trading LLC