18 Biggest Mid-Day Gainers For Monday

Achaogen Inc AKAO shares jumped 75.6 percent to $9.22 after the company disclosed positive results in Phase 3 cUTI and CRE clinical trials of plazomicin.
Ocean Rig UDW Inc. ORIG shares climbed 24.5 percent to $2.76 after climbing 14.43 percent on Friday. Oil Stocks surged after OPEC and non-OPEC members struck an agreement to support oil prices.
Mechel PAO (ADR) MTL shares surged 22 percent to $6.27 after falling 1.91 percent on Friday.
EV Energy Partners, L.P. EVEP shares jumped 21.6 percent to $2.6498.
Bonanza Creek Energy Inc BCEI shares climbed 18 percent to $1.61.
Vanguard Natural Resources, LLC VNR shares rose 15 percent to $1.22.
Tidewater Inc. TDW shares surged 14.3 percent to $4.28 after gaining 8.72 percent on Friday.
Pacific Drilling SA PACD shares rose 13.3 percent to $6.04 after climbing 17.40 percent on Friday.
Alliance HealthCare Services, Inc. AIQ shares surged 12.5 percent to $9.00. Tahoe Investment Group offered to acquire Alliance Healthcare shares for $9.60 per share in cash.
W&T Offshore, Inc. WTI shares climbed 11.7 percent to $2.20 after gaining 1.55 percent on Friday.
GulfMark Offshore, Inc. GLF shares surged 11.5 percent to $1.45.
Akorn, Inc. AKRX shares gained 10.5 percent to $20.56. Akorn reported the completion of the FDA re-inspection of Decatur facility.
Northern Oil & Gas, Inc. NOG shares climbed 9.5 percent to $3.45.
Seadrill Ltd SDRL rose 9.3 percent to $4.16 after surging 12.06 percent on Friday.
Stone Energy Corporation SGY shares gained 8.3 percent to $7.32 after the company reported extensions to a restructuring support agreement on Friday.
Regeneron Pharmaceuticals Inc REGN rose 4.8 percent to $ 390.76. Chardan Capital upgraded Regeneron Pharmaceuticals from Sell to Neutral and raised the price target from $300.00 to $350.00.
Whiting Petroleum Corp WLL shares rose 4 percent to $12.61 after the company disclosed that $721 million of convertible notes have been converted to stock.
Nippon Telegraph & Telephone Corp (ADR) NTT gained 3.9 percent to $41.18. Nippon Telegraph & Telephone announced plans to buy back up to $1.3 billion in stock.