Morning Market Losers

Intuitive Surgical

shares tumbled 8.04% to $450.45 after the company issued downbeat revenue forecast for the first-quarter. The company expected revenue of around $465 million, versus analysts' estimates of $535.5 million. Sterne Agee initiated coverage on the stock with an Underperform rating. Mistras Group

shares fell 7.71% to $20.47 after the company reported downbeat Q3 earnings and lowered its FY14 EBITDA forecast WD-40 Company

slipped 5.58% to $73.48 after the company reported weaker-than-expected FQ2 earnings. Ashford Hospitality Trust

shares declined 5.45% to $10.59 after the company priced 7.5 million shares at $10.70 per share. Walter Energy

fell 4.55% to $7.97 after UBS downgraded the stock from Neutral to Sell. Alpha Natural Resources

shares slipped 4.30% to $4.67 after UBS downgraded the stock from Neutral to Sell. Relypsa

slipped 2.68% to $26.50 after the company announced a proposed public offering of $80 million in common stock. Halozyme Therapeutics

shares dropped 2.04% to $8.12 after the company reported a clinical hold of PEGPH20 pancreatic cancer trial amid voluntary halt. General Motors Company

shares fell 2.03% to $33.83 as the company as has been fined $28 thousand by NHTSA for failing to respond to some requests.