35 Biggest Movers From Yesterday

Gainers

• Check-Cap Ltd. CHEK shares rose 78.82 percent to close at $7.26 on Monday.
• GEE Group, Inc. JOB shares jumped 18 percent to close at $2.36.
• McDermott International, Inc. MDR climbed 15.7 percent to close at $7.00 after the UK-based offshore oil service company Subsea 7 made an unsolicited bid to buy McDermott for $7 per share. However, the acquisition offer is contingent on McDermot terminating its pending merger with Chicago Bridge & Iron Company.
• Foresight Autonomous Holdings Ltd FRSX gained 17.21 percent to close at $3.61.
• Stars Group Inc. TSG rose 14.16 percent to close at $33.45. Stars Group Inc TSG announced plans to acquire Sky Betting & Gaming for $4.7 billion.
• China Internet Nationwide Financial Services Inc. CIFS shares jumped 12.79 percent to close at $25.58.
• Nautilus, Inc. NLS shares gained 11.52 percent to close at $15.00. Nautilus is expected to release Q1 results on May 7, 2018. Craig-Hallum initiated coverage on Nautilus with a Buy rating and a $19.00 price target.
• Box, Inc. BOX rose 10.94 percent to close at $22.91.
• Insmed Incorporated INSM shares rose 10.76 percent to close at $26.05. Credit Suisse upgraded Insmed from Neutral to Outperform.
• NextDecade Corporation NEXT shares rose 10.02 percent to close at $6.48.
• Helios and Matheson Analytics Inc. HMNY shares gained 8.37 percent to close at $2.46 on Monday after falling 10.98 percent on Friday.
• Cambium Learning Group, Inc. ABCD shares gained 7.81 percent to close at $11.11.
• Vectren Corporation VVC shares rose 7.26 percent to close at $70.31. CenterPoint Energy, Inc. CNP announced plans to acquire Vectren for $72 per share in cash.
• Tennant Company TNC rose 6.66 percent to close at $74.45 after the company posted upbeat Q1 results and raised its FY18 earnings outlook.
• Hanesbrands Inc. HBI gained 5.87 percent to close at $18.22. Stifel Nicolaus upgraded Hanesbrands from Hold to Buy.
• Michael Kors Holdings Limited KORS rose 4.37 percent to close at $67.85. Deutsche Bank upgraded Michael Kors from Hold to Buy.
• Command Security Corporation MOC shares rose 4.12 percent to close at $3.03 after the company disclosed a $23 million five-year contract with LaGuardia Gateway Partners for LaGuardia Airport New Central Terminal Building.

Losers

• Prothena Corporation plc PRTA shares tumbled 68.78 percent to close at $11.50 on Monday after a disappointing update relating to the company's treatment for AL amyloidosis. Prothena, a clinical-stage biopharmaceutical company that focuses on therapies in the neuroscience and orphan categories, said a Phase 2b study of its therapy called NEOD001 failed to achieve its primary or secondary endpoints. Prothena's Phase 2b study explored its NEOD001 therapy versus a placebo in previously-treated patients with AL amyloidosis and persistent cardiac dysfunction.
• Flotek Industries, Inc. FTK shares dipped 34.34 percent to close at $4.15 as the company issued weak revenue forecast for the first quarter.
• Akorn, Inc. AKRX fell 33.76 percent to close at $13.05 after Fresenius terminated its merger deal with Akorn.
• Arcadia Biosciences, Inc. RKDA shares fell 18.38 percent to close at $19.85.
• Valeritas Holdings, Inc. VLRX shares dipped 18.27 percent to close at $2.55 on Monday.
• Controladora Vuela Compañía de Aviación, S.A.B. de C.V. VLRS tumbled 17.97 percent to close at $5.75. Controladora Vuela recently reported first-quarter results that showed a loss for the quarter. Imperial Capital downgraded Controladora Vuela Compania de Aviacion from Outperform to In-Line.
• LSI Industries Inc. LYTS shares dropped 17.65 percent to close at $6.30. LSI Industries named Ronald D. Brown as interim CEO and Crawford Lipsey as interim COO.
• Gridsum Holding Inc. GSUM fell 16.05 percent to close at $6.12. Gridsum reported suspension of audit report on financial statements.
• Atossa Genetics Inc. ATOS declined 15.06 percent to close at $2.99 after declining 19.35 percent on Friday.
• Innovate Biopharmaceuticals, Inc. INNT shares fell 14.62 percent to close at $17.64.
• Landmark Infrastructure Partners LP LMRK shares declined 14.2 percent to close at $14.80.
• Alcoa Corporation AA dropped 13.51 percent to close at $51.90.
• Secoo Holding Limited SECO shares slipped 10.59 percent to close at $10.05 on Monday.
• Pier 1 Imports, Inc. PIR fell 9.85 percent to close at $2.38.
• Myomo, Inc. MYO slipped 9.73 percent to close at $3.62 on Monday after rising 11.39 percent on Friday.
• Aceto Corporation ACET shares slipped 9.16 percent to close at $2.28.
• Chicago Bridge & Iron Company N.V. CBI slipped 8.29 percent to close at $13.38. Subsea 7 made an unsolicited bid to buy McDermott for $7 per share. However, the acquisition offer is contingent on McDermot terminating its pending merger with Chicago Bridge & Iron.
• SunPower Corporation SPWR dipped 7.64 percent to close at $8.95. Bank of America downgraded SunPower from Neutral to Underperform