Chicago Board Options Exchange Deploys Corvil to Optimize Its Market Data Infrastructure for Low Latency

LONDON and NEW YORK, January 31, 2011 - Corvil, a provider of latency management systems for high performance
trading and market data, today announced that Chicago Board Options Exchange
(CBOE), the largest U.S. options exchange and creator of listed options, has
deployed Corvil's Latency Management System for monitoring and optimization
of their market data infrastructure.

The CorvilNet solution is being deployed in the market data path in order
to monitor latency and bandwidth and to identify possible market data
disruptions that may occur. CBOE is using CorvilNet for precision measurement
of one-way latency and loss for the OPRA market data feed across their
internal infrastructure, and to measure gap detection for the OPRA and CBOE
market data feeds. CBOE are also using CorvilNet's live API to access
bandwidth and loss statistics for internal business reporting.

"The implementation of the Corvil solution into our environment has
allowed us to achieve automated insight into the quality of our market data
streams. This has saved us from performing many manual processes that used to
take a great amount of time and energy for the results we needed to provide,"
said Gerald O'Connell, CBOE Executive Vice President of Systems and CIO.
"Now, we have consistent data being automatically provided in order to make
the correct recommendations to benefit our clients."

O'Connell highlighted message gap detection and customized live
dashboards as two key features of the CorvilNet solution. Gap detection
allows CBOE to see exactly where loss might be occurring anywhere in the path
throughout their network. The flexibility of the live dashboards provides
real-time customized views for items that are specifically important to the
CBOE environment.

"Low-latency distribution of market data has become one of the most
important factors that determine success in high frequency trading. When
distributing market data it is equally important to protect against packet
loss. By deploying the CorvilNet solution CBOE are able to deal with market
data microbursts while assuring latency and loss service levels for their
clients," 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

CONTACT, Collette Bird, E-mail: collette.bird at corvil.com, +353-1-859-1040