15 Biggest Mid-Day Losers For Monday

COMSCORE, Inc. SCOR shares tumbled 22.4 percent to $25.19 after the company disclosed that it has notified the Nasdaq Hearings Panel that it will be unable to regain compliance with its SEC periodic reporting requirements by the deadline date.
Aratana Therapeutics Inc PETX shares tumbled 16.8 percent to $6.68. Aratana Therapeutics reported that it projects ENTYCE to be commercially available in late 2017.
LGI Homes Inc LGIH dropped 11.3 percent to $27.80. LGI Homes disclosed that 172 homes closed in January 2017, down from 232 home closings in the year-ago period. Wells Fargo downgraded LGI Homes from Market Perform to Underperform.
Moleculin Biotech Inc MBRX fell 9.8 percent to $2.03.
Diffusion Pharmaceuticals Inc DFFN shares slipped 8.4 percent to $4.17. Diffusion Pharmaceuticals shares have dropped 68.62 percent over the past 52 weeks, while the S&P 500 index has gained 23.95 percent in the same period.
Xplore Technologies Corp. XPLR declined 8.3 percent to $2.00. Xplore Technologies shares have slipped 39.20 percent over the past 52 weeks, while the S&P 500 index has gained 23.95 percent in the same period.
Document Security Systems, Inc. DSS shares fell 7.6 percent to $1.21.
Newell Brands Inc NWL dropped 5.7 percent to $44.22. Newell Brands reported in-line earnings for its fourth quarter, while sales missed expectations.
Laboratory Corp. of America Holdings LH declined 4.4 percent to $131.66. Laboratory Corp. is in talks to acquire contract researcher Pharmaceutical Product Development LLC for more than $8 billion, according to sources as reported by Reuters on Friday. Baird downgraded Laboratory Corp. from Outperform to Neutral.
Vista Outdoor Inc VSTO dropped 4.4 percent to $25.03. DA Davidson downgraded Vista Outdoor from Buy to Neutral.
MYOS RENS Technology Inc MYOS shares fell 4.1 percent to $3.50 after surging 37.22 percent on Friday.
Calpine Corporation CPN dropped 4 percent to $11.19. Morgan Stanley downgraded Calpine from Overweight to Equal-Weight.
FMC Technologies, Inc. FTI shares declined 3 percent to $32.45. Jefferies initiated coverage on FMC Technologies with a Hold rating.
Tiffany & Co. TIF shares fell 2 percent to $79.07 after the company reported the resignation of its CEO Frederic Cumenal.
bluebird bio Inc BLUE shares slipped 2 percent to $77.22. Roth Capital downgraded bluebird bio from Buy to Neutral.