18 Biggest Mid-Day Gainers For Wednesday

Catalyst Pharmaceuticals Inc (NASDAQ: CPRX) shares jumped 27.7 percent to $1.43. Piper Jaffray upgraded Catalyst Pharmaceuticals from Neutral to Overweight and raised the price target from $1.00 to $4.00.
Corbus Pharmaceuticals Holdings Inc (NASDAQ: CRBP) shares climbed 23.6 percent to $8.67. Cantor Fitzgerald initiated coverage on Corbus Pharmaceuticals with a Buy rating and a $17.00 price target.
Resolute Energy Corp (NYSE: REN) shares surged 17.7 percent to $30.22. Rodman & Renshaw initiated coverage on Resolute Energy with a Buy rating and $32 price target.
Net 1 UEPS Technologies Inc (NASDAQ: UEPS) gained 16.3 percent to $10.48 after the company reported the acquisition of a strategic stake in Blue Label Telecoms Limited.
Bristow Group Inc (NYSE: BRS) rose 12.7 percent to $15.36. Bristow Group appointed William "Bill" Collins to senior vice president global operations.
Acacia Communications, Inc. (NASDAQ: ACIA) shares climbed 11.1 percent to $113.29 after the company raised its guidance for the third quarter and filed a 4.5 million share offering.
Jones Energy Inc (NYSE: JONE) surged 10.8 percent to $4.32. Stifel Nicolaus upgraded Jones Energy from Hold to Buy and raised the price target from $3.00 to $6.00.
KBR, Inc. (NYSE: KBR) rose 7.5 percent to $15.15. Johnson Rice upgraded KBR from Hold to Accumulate.
Anavex Life Sciences Corp. (NASDAQ: AVXL) gained 6.5 percent to $3.91 following announcement of a collaboration on Alzheimer's and Parkinson clinical development programs.
Texas Capital Bancshares Inc (NASDAQ: TCBI) shares rose 5.1 percent to $58.46. Texas Capital Bancshares is expected to release Q3 results on October 20, 2016.
Twitter Inc (NYSE: TWTR) shares rose 4.6 percent to $24.59. The Wall Street Journal reported Tuesday evening that Twitter is expected to receive a buyout offer from salesforce.com, inc. (NYSE: CRM).
Endurance Specialty Holdings Ltd. (NYSE: ENH) rose 4.5 percent to $ 91.78. Sompo Holdings agreed to acquire Endurance Specialty Holdings for $93 per share in cash.
TeamHealth Holdings Inc (NYSE: TMH) shares gained 3.7 percent to $39.63. Team Health is said to be exploring a potential sale to a private-equity firm, according to sources as reported by the Wall Street Journal.
Parker-Hannifin Corp (NYSE: PH) rose 3.3 percent to $127.80. Stifel Nicolaus upgraded Parker-Hannifin from Hold to Buy.
Eni SpA (ADR) (NYSE: E) gained 2.8 percent to $29.74. Deutsche Bank upgraded Eni from Hold to Buy.
Global Payments Inc (NYSE: GPN) rose 2.5 percent to $78.34 after the company reported better than expected earnings for the first quarter and boosted its EPS forecast for the fiscal year 2017.
State Street Corp (NYSE: STT) shares gained 2.4 percent to $73.04. Keefe Bruyette & Woods upgraded State Street from Underperform to Market Perform.