12 Biggest Mid-Day Losers For Friday

StemCells Inc STEM shares tumbled 18 percent to $1.36. StemCells shares have declined 67.83 percent over the past 52 weeks, while the S&P 500 index has gained 5.16 percent in the same period.
China Finance Online Co. (ADR) JRJC dropped 16 percent to $4.36. China Finance Online reported Q2 earnings of $0.50 per share on revenue of $11 million.
Olympic Steel, Inc. ZEUS dropped 14.8 percent to $21.84. KeyBanc downgraded Olympic Steel from Sector Weight to Underweight.
Pure Storage Inc PSTG shares fell 14.8 percent to $11.43. OTR Global downgraded Pure Storage from Positive to Negative.
AK Steel Holding Corporation AKS declined 7.5 percent to $4.78. KeyBanc downgraded AK Steel from Sector Weight to Underweight.
United States Steel Corporation X slipped 5.3 percent to $20.67. KeyBanc downgraded United States Steel from Sector Weight to Underweight.
Sanchez Energy Corp SN shares fell 4.8 percent to $8.73. KLR Group downgraded Sanchez Energy from Buy to Accumulate.
Stein Mart, Inc. SMRT dropped 4.6 percent to $8.58 as the company reported weak results for the second quarter.
Emerson Electric Co. EMR shares declined 3.5 percent to $52.76 as the company announced a deal to buy Pentair plc PNR's valves & controls unit for $3.15 billion. Credit Suisse downgraded Emerson Electric from Outperform to Neutral.
Estee Lauder Companies Inc EL slipped 3 percent to $92.42. Estee Lauder posted better-than-expected Q4 earnings, but issued a weak earnings forecast for the year.
Canadian Solar Inc. CSIQ shares declined 3 percent to $13.93 after surging 17.53 percent on Thursday. Cowen & Company downgraded Canadian Solar from Outperform to Market Perform.
Gordmans Stores, Inc. GMAN shares declined 3 percent to $1.34 after the company posted downbeat Q2 results and issued a weak forecast for the current quarter.

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