NASDAQ Top Percentage Gainers: CDTI, RADS, CLNE, WPRT

Clean Diesel Technologies, Inc. (NASDAQ:CDTI) Biggest Gainer

POINT ROBERTS, July 13, 2011 - www.InvestorIdeas.com, a global investor research portal
for independent investors, reports on top percentage gainers on the NASDAQ for July 12, 2011.
Clean Diesel Technologies, Inc topped the gainer list, rising about 60% on Tuesday.

Clean Diesel Technologies, Inc. (NASDAQ:CDTI) was the biggest gainer on Nasdaq ,soaring
2.51 (59.62%) to $6.72 after analysts at Capital Research started coverage on the stock with a
buy rating. Analysts said that prospects for improving conditions in the diesel retrofit business
would lead to increase in revenue.

Radiant Systems, Inc. (NASDAQ:RADS) also rose 6.54 (30.49%) to $27.99 after NCR
Corp.(NCR) reached an agreement to buy the company for $1.2 billion in cash.

Clean Energy Fuels Corp. (NASDAQ:CLNE) climbed 1.96 (14.94%) to $15.08 after
Chesapeake Energy announced on Tuesday that it would invest $150 million in Clean Energy to
help fund the building of new liquefied natural gas fueling stations for trucks.

Westport Innovations Inc. (USA) (NASDAQ:WPRT) surged 2.08 (8.59%) to $26.30 following
Chesapeake, which produces natural gas, announced Monday that it would spend $1 billion over
the next decade to build natural gas fueling stations and other infrastructure and innovations
that would encourage the use of natural gas. Jefferies analyst Laurence Alexander said the
announcement was "incrementally positive" for Westport.

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