18 Biggest Mid-Day Gainers For Tuesday

ZAIS Group Holdings, Inc. ZAIS shares surged 66.4 percent to $3.41. Christian Zugel disclosed a 7.5 percent stake in Zais Group.
PhotoMedex Inc PHMD shares climbed 35.7 percent to $2.47. PhotoMedex shares have dropped 19.11 percent over the past 52 weeks, while the S&P 500 index has gained 22.83 percent in the same period.
Cynosure, Inc. CYNO shares jumped 28 percent to $65.93. Hologic, Inc. HOLX announced plans to buy Cynosure for $1.65 billion.
Reliv International, Inc RELV shares gained 24.1 percent to $7.20 after surging 29.75 percent on Monday.
RetailMeNot Inc SALE shares climbed 19.1 percent to $10.65 after the company posted stronger-than-expected Q4 results.
Zosano Pharma Corp ZSAN shares rose 18 percent to $2.00.
Delta Technology Holdings Limited DELT shares gained 14.5 percent to $1.44. Delta Technology shares have surged 32.63 percent over the past 52 weeks, while the S&P 500 index has gained 22.83 percent in the same period.
Navios Maritime Partners L.P. NMM rose 13.6 percent to $2.01 after the company reported strong Q4 results.
Vermillion, Inc. VRML gained 13 percent to $1.57 after the company disclosed an equity financing of $5.6 million.
Agenus Inc AGEN surged 12.8 percent to $4.65. Incyte INCY and Agenus reported an amended collaboration deal for development and commercialization responsibilities for GITR and OX40 programs.
GigPeak Inc GIG climbed 12.7 percent to $3.06. Integrated Device Technology Inc IDTI agreed to acquire GigPeak for around $250 million in cash.
OneMain Holdings Inc OMF surged 9 percent to $26.61. OneMain Holdings reported Q4 earnings of $0.80 per share.
InVitae Corp NVTA shares rose 9 percent to $10.00. Invitae reported a Q4 loss of $24.8 million. Benchmark upgraded InVitae from Hold to Buy.
Scorpio Tankers Inc. STNG shares gained 6.1 percent to $4.20 after rising 10.61 percent on Monday.
Uranium Resources, Inc. URRE rose 4.7 percent to $2.46 after the company reported preliminary unaudited results for 2016.
Zillow Group, Inc. ZG gained 4.6 percent to $36.40. Stifel Nicolaus upgraded Zillow Group from Hold to Buy.
Axsome Therapeutics Inc AXSM gained 4.4 percent to $4.80 after the company disclosed that it has received FDA Fast Track designation for AXS-05 for treatment resistant depression.
Cyberark Software Ltd CYBR rose 3.7 percent to $54.83. Stifel Nicolaus initiated coverage of Cyberark with a Buy rating.