Shares of

Red Robin Gourmet Burgers

(RRGB) - Get Report

were among the

Nasdaq's

losers Friday, plunging 28% after the restaurant operator

posted third-quarter earnings that were just short of expectations and cut its full-year earnings and sales guidance.

The company earned $6 million, or 36 cents a share, on revenue of $148.6 million. Excluding a charge, the company would have earned 42 cents a share. Analysts polled by Thomson First Call expected earnings of 43 cents a share on revenue of $148.4 million. During the year-earlier period, the company earned $6.5 million, or 39 cents a share, on revenue of $114.2 million.

Looking ahead, Red Robin now sees full-year earnings of $1.62 to $1.67 a share on revenue of $611 million to $613 million. Previously, the company forecast earnings of $1.74 to $1.83 a share on revenue of $615 million to $618 million. Analysts project earnings of $1.78 a share on revenue of $618.4 million. Shares were trading down $12.80 to $33.20.

Whole Foods Market

( WFMI) tumbled 22% after the organic foods grocer

posted in-line fourth-quarter earnings on lower-than-expected revenue and cautioned that 2007 would be a transition year for the company. Whole Foods posted adjusted earnings of $42.2 million, or 29 cents a share, on revenue of $1.29 billion. Analysts expected earnings of 29 cents a share on revenue of $1.32 billion. During the year-earlier period, the company posted earnings of $33.4 million, or 23 cents a share, on revenue of $1.12 billion.

Looking ahead, Whole Foods said that it expects same-store sales growth to revert back to historical ranges. "After producing such strong growth over the last three years, we believe fiscal 2007 will be a transition year for us," the company said. "As we revert back to our historical comparable-store sales growth range, without yet producing a fully offsetting increase in sales from new stores, we believe our total sales growth will be impacted." Shares were trading down $13.08 to $47.04.

Shares of

Weight Watchers

(WTW) - Get Report

rose 8% after the provider of weight management services posted better-than-expected third-quarter results. The company earned $50.6 million, or 52 cents a share, on revenue of $284.8 million. Analysts expected earnings of 51 cents a share on revenue of $273.2 million. During the year-earlier quarter, the company earned $49.5 million, or 47 cents a share, on revenue of $257.5 million.

Looking ahead, Weight Watchers now sees full-year earnings of $2.04 to $2.08 a share, in line with the $2.07 a share that analysts project. Shares were trading up $3.37 to $46.97.

LeapFrog Enterprises

(LF)

tumbled 18% after the maker of educational toys posted an unexpected third-quarter loss on revenue that was well below expectations. The company reported a loss of $49.7 million, or 79 cents a share, on revenue of $184.7million. Analysts expected a profit of 34 cents a share on revenue of $218.3 million. During the year-earlier quarter, the company earned $32.8 million, or 52 cents a share, on revenue of $242.8 million.

Looking ahead, LeapFrog sees a full-year loss of $2 a share. Analysts project a much smaller loss of 42 cents a share. Shares were trading down $1.71 to $7.66.

Shares of

Walter Industries

(WLT)

fell 6% after the coal producer posted disappointing third-quarter earnings and cut its full-year earnings outlook. The company posted earnings from continuing operations of $65.2 million, or $1.27 a share, on revenue of $857 million. Analysts expected earnings of $1.38 a share. During the year-earlier period, the company earned $20.4 million, or 44 cents a share, on revenue of $418.7 million.

Looking ahead, Walter Industries now sees adjusted full-year earnings of $4.40 to $4.80 a share, down from an earlier view of $5 to $5.55 a share. Analysts project earnings of $5.03 a share. "Our reduced earnings-expectations range primarily reflects lower third-quarter coal production at Mine No. 4, which will result in higher costs and reduced sales in the fourth quarter," the company said. Shares were trading down $2.75 to $42.80.

NYSE

volume leaders included

AT&T

(T) - Get Report

, down 12 cents to $33.90;

Time Warner

(TWX)

, up 7 cents to $20.05;

BellSouth

( BLS), down 22 cents to $44.43;

Motorola

( MOT), down 23 cents to $22.37;

CVS

(CVS) - Get Report

, up 12 cents to $28.98;

NRG Energy

(NRG) - Get Report

, up $3.64 to $51.95;

Advanced Micro Devices

(AMD) - Get Report

, up 12 cents to $20.97;

Pfizer

(PFE) - Get Report

, down 1 cent to $26.68; and

Lucent Technologies

( LU), down 3 cents to $2.37.

Nasdaq volume leaders included

Microsoft

(MSFT) - Get Report

, down 2 cents to $28.75;

Intel

(INTC) - Get Report

, down 13 cents to $20.45;

Cisco Systems

(CSCO) - Get Report

, down 21 cents to $23.84;

Qualcomm

(QCOM) - Get Report

, up 52 cents to $36.88;

Oracle

(ORCL) - Get Report

, down 34 cents to $17.93;

Stellent

(STEL)

, up $2.73 to $13.35;

JDSU

( JDSUP), up $2.15 to $16.43;

Sun Microsystems

(SUNW) - Get Report

, down 5 cents to $5.28;

Novell

( NOVL), up 3 cents to $6.82; and

Applied Materials

(AMAT) - Get Report

, down 16 cents to $16.94.