18 Biggest Mid-Day Gainers For Thursday

Venaxis Inc APPY shares surged 38.8 percent to $4.23. Venaxis shares have increased 7.14 percent over the past 52 weeks, while the S&P 500 index has gained 4.57 percent in the same period.
Tilly's Inc TLYS shares climbed 32.2 percent to $13.05 after the company posted better-than-expected Q3 results.
Stone Energy Corporation SGY shares gained 33.8 percent to $6.53.
W&T Offshore, Inc. WTI shares climbed 20.7 percent to $2.04. Crude oil futures rose 4.4 percent to trade at $51.60 a barrel.
Christopher & Banks Corporation CBK jumped 19.2 percent to $2.05 after the company posted better-than-expected quarterly results.
Hornbeck Offshore Services, Inc. HOS shares rose 17.2 percent to $5.99.
CLARCOR Inc. CLC shares surged 16.9 percent to $82.32. Parker-Hannifin Corp PH announced plans to buy CLARCOR in a $4.3 billion deal.
Seadrill Ltd SDRL shares climbed 16.5 percent to $3.25 after gaining 13.88 percent on Wednesday.
Skechers USA Inc SKX gained 15.2 percent to $26.24. Buckingham upgraded Skechers from Neutral to Buy.
bluebird bio Inc BLUE shares gained 12.3 percent to $67.80 following release of positive data on relapsed/refractory multiple myeloma study.
Donaldson Company, Inc. DCI climbed 11.9 percent to $45.38 on better-than-expected Q1 earnings.
Semtech Corporation SMTC gained 10.5 percent to $31.05. Semtech reported Q3 earnings of $0.37 per share on revenue of $137.18 million.
DryShips Inc. DRYS shares rose 9.1 percent to $5.73 after climbing 21.25 percent on Wednesday.
Globus Maritime Ltd GLBS shares gained 6 percent to $7.18 after surging 21.72 percent on Wednesday.
Dana Inc DAN shares gained 4.4 percent to $17.63. Deutsche Bank upgraded Dana from Hold to Buy and raised the price target from $16.00 to $20.00.
Canadian Imperial Bank of Commerce (USA) CM shares gained 3.9 percent to $81.76. Canadian Imperial Bank of Commerce posted stronger-than-expected quarterly earnings.
Chevron Corporation CVX rose 2.7 percent to $114.49. Independent Research upgraded Chevron from Hold to Buy.
Lindsay Corporation LNN gained 2.5 percent to $86.38. Stifel Nicolaus upgraded Lindsay from Sell to Hold.