Morning Market Losers

OPOWER, Inc. OPWR shares fell 19.33% to $12.48 after the company posted a narrower-than-expected Q4 net loss, but offered a revenue outlook below the consensus. Primoris Services Corporation PRIM shares slipped 15.86% to $17.75. Primoris Services reported Q4 earnings of $0.17 per share and announced the acquisition of Otter Tail Corporation OTTR subsidiary Aevenia in a transaction valued at $23 million. Uranium Resources, Inc. URRE shares dropped 15.76% to $1.55 after the company announced a $6.0 million registered direct offering. SunOpta Inc. STKL shares declined 13.80% to $9.87 after the company reported Q4 earnings of $0.06 per share on revenue of $284.8 million and announced a $30 million buyback. The company also announced the acquisition of Citrusource. Cumulus Media Inc. CMLS shares slipped 12.72% to $3.50 after the company reported lower earnings for the fourth quarter. MannKind Corp. MNKD shares tumbled 9.71% to $6.00. Goldman Sachs downgraded MannKind from Neutral to Sell and lowered the price target from $6.00 to $3.00. Caesars Entertainment CorporationCZR shares dropped 7.65% to $10.18 after the company reported fourth quarter financial results and missed expectations. Arena Pharmaceuticals, Inc.ARNA shares fell 6.54% to $4.00 after the company reported downbeat financial results for the fourth quarter. Tarena International, Inc. TEDU shares declined 5.47% to $10.88. Tarena International reported Q4 earnings of $0.15 per share on revenue of $27.8 million and issued a weak revenue outlook. Micron Technology, Inc. MU shares declined 3.17% to $30.25 Nomura downgraded Micron Technology from Buy to Neutral and lowered the price target from $40.00 to $30.00.