Shares of

Target

(TGT) - Get Report

were among the

NYSE's

losers Monday, falling 4% after the discount retailer posted first-quarter earnings that missed Wall Street's forecast by a penny.

The company earned $554 million, or 63 cents a share, on revenue of $12.86 billion. Analysts polled by Thomson First Call expected earnings of 64 cents a share on revenue of $12.85 billion. During the year-earlier quarter, Target earned $494 million, or 55 cents a share, on revenue of $11.48 billion. During the most recent period, the company recorded a 12.1% jump in cost of sales and a 15.3% increase in selling, general and administrative expenses. As a result, the company's gross margin was "slightly unfavorable" compared with a year ago, Target said.

Looking ahead, Target continues to see 2006 earnings growing in the mid-teen percentage range. Analysts project earnings of $3.12 a share, or earnings growth of about 16%. Shares were trading down $2.19 to $50.02.

American Retirement

( ACR) jumped 29% after the retirement facilities operator agreed to be acquired by

Brookdale Senior Living

(BKD) - Get Report

for about $1.2 billion in cash. Brookdale will pay $33 a share for American Retirement, representing a 33% premium over Friday's closing price of $24.90. "This is an extraordinarily powerful combination of complementary businesses that creates the nation's largest operator of senior living facilities," Brookdale said in a press release. The combined company will operate 535 facilities in 34 states, serving more than 50,000 residents. The deal is expected to close in the third quarter. Shares of American Retirement were trading up $7.21 to $32.11, while Brookdale shares rose $3.36, or 9%, to $40.36.

Shares of

Ivanhoe Mines

( IVN) sank 23% after the mining company posted a wider first-quarter loss. The company reported a loss of $23.2 million, or 7 cents a share. Ivanhoe reported a loss from continuing operations of $31.1 million, or 10 cents a share. Last year, the company posted a first-quarter loss from continuing operations of $24.2 million, or 8 cents a share. Ivanhoe blamed the wider loss on lower income from a joint venture, a decrease in income from the sale of discounted operations, and an increase in stock-based compensation costs. Shares were trading down $2.12 to $7.14.

Stewart & Stevenson Services

( SVC) rose 3% after the maker of trucks said that

Armor Holdings

(AH)

increased its buyout offer price. Armor will now pay $36.50 a share for Stewart & Stevenson, up from an earlier price of $35 a share. "The board of directors unanimously believes that the significant cash premium presented by Armor Holdings' amended merger proposal is the best way to deliver enhanced value to shareholders," Stewart said. Shares were trading up $1.13 to $36.69.

Shares of

Select Comfort

(SCSS)

rose modestly after the mattress maker increased its share repurchase plan and announced a 3-for-2 stock split. The company is now authorized to buy up to an additional $150 million in stock. "Our share repurchase program, which has been accretive to earnings per share, has historically been opportunistic in nature," the company said. The split is payable June 8 to shareholders of record on May 25.

On a split-adjusted basis, Select Comfort sees 2006 earnings of 91 cents to 95 cents a share. Before the effects of the split, the company expects earnings of $1.37 to $1.42 a share. Analysts project earnings of $1.41 a share. The company continues to see long-term earnings growth of 20% to 25% on revenue growth between 15% and 20%. Shares were up 13 cents to $37.59.

NYSE volume leaders included

Lucent Technologies

( LU), up 6 cents to $2.62;

Pfizer

(PFE) - Get Report

, up 39 cents to $24.89;

Ford

(F) - Get Report

, up 7 cents to $7.18;

Time Warner

(TWX)

, down 13 cents to $17.37;

Goldcorp

(GG)

, down $1.78 to $35.78;

Nortel Networks

( NT), up 3 cents to $2.67; and

Motorola

( MOT), down 32 cents to $21.32.

Nasdaq

volume leaders included

Sirius Satellite Radio

(SIRI) - Get Report

, down 12 cents to $4.22;

JDSU

(JDSU)

, down 5 cents to $2.87;

Microsoft

(MSFT) - Get Report

, up 6 cents to $23.14;

Intel

(INTC) - Get Report

, up 10 cents to $19.14;

Cisco Systems

(CSCO) - Get Report

, up 14 cents to $20.48;

Sun Microsystems

(SUNW) - Get Report

, up 2 cents to $4.86; and

Oracle

(ORCL) - Get Report

, down 6 cents to $13.92.