DRO|WST uses Orc for advanced VIX options trading

DRO|WST uses Orc for advanced VIX options trading

Chicago, Wednesday, May 11, 2011 - Orc Software (SSE: ORC), a leading
provider of technology and services for the global financial industry,
today announced that Chicago-based broker-dealer DRO|WST is using Orc
Trader for sophisticated VIX options quoting and trading. The order was
booked in Q1 2011, and the contract is based on Orc's licensing
subscription model.

DRO|WST is using Orc Trader to improve the efficiency of their quoting
and trading of VIX options on the Chicago Board Options Exchange (CBOE).
Orc Trader will allow DRO|WST to quickly and easily manage their
volatilities, identify profitable trading opportunities, and execute
trades to capture those opportunities.

“We needed a quoting solution that lets us simplify our trading and
streamline our processes,” comments Michael Dalesandro, Principle at
DRO|WST. “Orc Trader gave us a turnkey solution that lets our traders
spend more time in the market and less time managing the system. In
particular, their modeling for the VIX is excellent and allowed us to
get the system up and running fast. We look forward to adding more
traders to our firm to take advantage of this solution.”

“The VIX is a challenging product to trade, so we invest our resources
into building high-performance systems that support markets like the
VIX,” notes Steve Lukes, VP of Americas Sales at Orc Software. “With
tighter spreads and more challenging markets, being able to spend more
time on actual trading and less time on setting up for the trade offers
clients like DRO|WST a real competitive advantage.”

The Orc Trading solutions are used by leading financial firms worldwide
for market making, volatility trading and high-frequency trading.
Together with access to all major cash and derivatives markets and a
network of brokers, this is truly an unmatched offering. Orc Trading is
available both as deployed software and as a managed service.

About Orc Software's revenue model
Standard agreements follow Orc's licensing subscription model, a
flexible approach designed to streamline the customer on boarding
process and provide ease of access to software updates, together with a
mature support framework. Customers are invoiced quarterly, in advance,
and revenue allocated to the invoicing period.

About DRO|WST
DRO|WST is a Chicago based broker dealer specializing in professional
equity and option trading. DRO|WST provides professional traders, hedge
funds, and proprietary trading groups with resources in capital,
technology, education and access to the derivative trading network. Our
traders/clients access option markets in a variety of formats ranging
from mass quoting large series of options to individual traders looking
for ways to enhance their returns.

www.drowst.com

About Orc Software
Orc is a leading provider of technology and services for the global
financial industry. Orc delivers trading and market access solutions
that are used by proprietary trading and market making firms, investment
banks, hedge funds and brokerage houses worldwide.

Available as deployed software or as managed services, Orc develops and
provides the tools needed for running a profitable trading or brokerage
business in today's competitive and ever-changing markets.

With market presence in all major global financial centers, Orc provides
sales and support services from its offices across the EMEA, Americas
and Asia-Pacific regions. Orc Software is listed on Nasdaq OMX Stockholm
(SSE: ORC).

www.orcsoftware.com

For further information:

Barry Vasudevan, Marketing Director, Orc Software, +1 212 351 7624,
barry.vasudevan@orcsoftware.com