The markets opened sharply higher with the Dow soaring 160 points to 17,709 as Chinese markets climbed for a second day. Nasdaq surged 51 points to 4,974.

On the upside

Shares of National Bank of Greece (NYSE: NBG) rose after Greece submitted a reform plan to Euro zone officials.

Kingtone Wirelessinfo Solution (Nasdaq: KONE) swung to a profit for the first six months of fiscal 2015 as revenue more than doubled.
 
TrueCar (Nasdaq: TRUE) will end its partnership with AutoNation effective July 31, 2015.
 
On the downside

Barracuda Networks (NYSE: CUDA) fell to a loss for the first quarter and forecast current quarter revenue that fell short of analyst expectations.

Zillow (Nasdaq: Z) chief financial officer Chad Cohen resigned effective August 7, 2015.

PTC (Nasdaq: PTC) warned that third quarter revenue would miss expectations.

In the broad market, advancing issues outpaced decliners by a margin of more than 6 to 1 on the NYSE and by 7 to 1 on Nasdaq. The broader S&P 500 climbed 19 points to 2071. Bitcoin soared $16 to $286.