Morning Market Losers

shares fell 20.33 percent to $7.35 following the announcement of AU$15.5 million placement.

shares declined 15.08 percent to $5.80. Ultra Clean Holdings reported upbeat Q1 earnings, but issued a weak Q2 outlook.

tumbled 14.94 percent to $19.87 after the company reported downbeat quarterly results.

dropped 11.76 percent to $2.10. Stifel Nicolaus downgraded Rhino Resource Partners from Hold to Sell.

shares dipped 8.64 percent to $56.43 after the company reported upbeat Q1 profit, but cut its motorcycle-shipment outlook for 2015.

slipped 7.34 percent to $71.37 on downbeat quarterly earnings.

shares fell 4.99 percent to $83.38 after the company reported in-line quarterly earnings.

fell 2.59 percent to $62.00. Stifel Nicolaus downgraded Shake Shack from Buy to Hold and removed the price target of $50.00

dropped 1.55 percent to $195.00. According to a report from the Wall Street Journal,

could be considering a bid for

.

shares slipped 1.29 percent to $104.77 after the company reported a drop in its first-quarter profit. The company's sales also missed analysts' views.