Wild Oats Markets

( OATS) gained Tuesday after the Boulder, Colo., supermarket chain was upgraded by KeyBanc Capital Markets to buy from hold.

The analyst's report said that "having gotten sales back on track last year, management is now fine-tuning its business model to generate stronger sustainable like-store sales gains." Shares of Whole Foods were climbing 78 cents, or 4.9%, to $16.61.

Brightpoint

( CELL) slid after the Indiana-based cell-phone distributor was downgraded by Deutsche Securities to hold from buy.

"While Brightpoint remains well-positioned for the year, we think a shift in carrier competition has favored accounts where Brightpoint is less well represented," the firm said. "In addition, normal seasonality is returning, offering only modest growth this quarter." Shares fell $3.47, or 17.5%, to $16.42.

Delia's

(DLIA)

plummeted after the New York-based seller of clothes and accessories for teenagers posted its latest quarterly results. For the first quarter ended April 29, the company lost $1.2 million, or 5 cents a share, compared with a loss of $12.5 million, or 58 cents a share, a year ago. Sales rose 16% to $51.9 million, the company said, driven by revenue increases in both the direct and retail segments.

Before items, the company would have lost 14 cents a share last year. Same-store sales for nonoutlet stores dropped 7.1%, due, in part, to a planned reduction in nonapparel merchandise. Shares of Delia's dropped $1.64, or 15.5%, to $8.95.

Kendle International

( KNDL) gained on the news the Cincinnati-based clinical research company will be added to the S&P SmallCap 600, replacing

SBS Technologies

( SBSE).

SBS is being acquired by a unit of

General Electric

(GE) - Get Report

in a deal that's awaiting final approval. Shares of Kendle International climbed $1.27, or 3.8%, to $34.80.

G-III Apparel

(GIII) - Get Report

saw its stock sink after the company said its first-quarter loss widened from a year ago. For the three-month period ended April 30, G-III had sales of $14.4 million and a loss of $8.9 million, or 72 cents a share. Last year, the company had sales of $13.8 million and a loss of $4.7 million, or 43 cents a share.

For the second quarter, G-III forecast sales of roughly $60 million and a loss of 30 cents to 35 cents a share. The clothing distributor also repeated its previous fiscal year guidance for sales of $400 million and a profit of 58 cents to 62 cents a share. Shares of G-III were dropping $1.33, or 14.1%, to $8.08.