Corvil Deployed at SIX Swiss Exchange to Optimize Market Centre for Low-Latency Performance

LONDON and NEW YORK, March 28, 2011 - Corvil, a provider of latency management systems for high performance
trading and market data, today announced that SIX Swiss Exchange, one of the
world's leading and most technologically advanced securities exchanges, is
using Corvil's Latency Management System for full latency monitoring of
service provider performance, client order flow and analysis of market data
quality.

The CorvilNet solution enables SIX Swiss Exchange to validate the latency
performance of colocation providers and service provider links to its market
participants. At the application level CorvilNet is being used to report on
the execution speed of customer order flow, including trade-to-tick and
order-to acknowledgement. Market data quality is also being monitored,
including gap detection analysis. As part of the deployment Corvil delivered
decoders for the exchange's proprietary Market Data Interface (MDI) feed,
Standard Trading Interface (STI) feed and Capacity Trading Interface (CTI)
feed.

"We are committed to providing our trading members with the highest
levels of efficiency and transparency. The deployment of the CorvilNet
solution into our environment has provided us with automated insight into the
latency performance of our service providers and given us the tools to
optimize our environment for low-latency performance," explained Chris
Landis, Head of Operations SIX Swiss Exchange.

"We are very pleased that our CorvilNet solution was selected as the
platform of choice by SIX Swiss Exchange. With CorvilNet SIX Swiss Exchange
can leverage greater visibility into client order execution and market data
latency while, in turn, the exchange is now better equipped to capacity plan
and quickly address latency bottlenecks, through the real-time monitoring of
latency performance levels across all elements of their trading
infrastructure," said Corvil CEO, Donal Byrne.

Corvil

Corvil is a provider of Unified Latency Management systems to the world's
leading trading organizations including global banks, exchanges, electronic
market makers and services providers to financial markets. The company was
founded in 2000 and operates from New York, London and Dublin. Customers use
Corvil for precision monitoring, troubleshooting and reporting of performance
for their trading applications and networks. In addition, Corvil's products
are used to demonstrate latency compliance and transparency of services such
as co-location, direct feeds and Direct Market Access (DMA) offered to
trading clients. For more information on Corvil, please visit
www.corvil.com

SIX Swiss Exchange

SIX Swiss Exchange is one of the world's leading and most technologically
advanced securities exchanges. It provides customers with first-rate
securities exchange services and brings together participants, issuers and
investors in an efficient and transparent marketplace. In addition to the
broad palette of products it offers, the SIX Swiss Exchange's integrated,
fully automatic trading, clearing and settlement system is indeed convincing.

www.six-swiss-exchange.com

SIX Swiss Exchange is a subsidiary of SIX Group. On a worldwide scale,
SIX Group offers first rate services in the areas of securities trading,
clearing and settlement, as well as financial market information and payment
transactions.

www.six-group.com

CONTACT Corvil: Collette Bird, E-mail: collette.bird at corvil.com, Phone: +353-1-859-1040; CONTACT SIX Swiss Exchange, Stephan Meier, Media Relations, SIX Swiss Exchange; Phone: +41-58-399-2675, Fax: +41-58-499-2710, E-mail: pressoffice at six-group.com