Shares of

Famous Dave's of America

(DAVE)

were among the

Nasdaq's

winners Thursday, rising 20% after the company posted second-quarter results that were well ahead of Wall Street expectations.

The restaurant operator reported earnings of $1.9 million, or 17 cents a share, on sales of $28.1 million. Analysts polled by Thomson First Call were expecting earnings of 11 cents a share on sales of $26.7 million. A year ago the company earned $1 million, or 8 cents a share, on sales of $25.4 million. During the second quarter, the company repurchased almost 600,000 shares at an average price of $11.04 a share. The purchases completed the company's share-repurchase program, which was announced in November 2004. In all, Famous Dave's paid an average price of $11.93 a share for all 1 million shares. Shares were recently trading up $2 to $11.99.

Ameristar Casinos

(ASCA)

fell 9% after the company posted second-quarter earnings that were weaker than expected and forecast third-quarter earnings that are below expectations. The casino operator earned $16.7 million, or 29 cents a share, on sales of $238.9 million. Analysts were expecting earnings of 30 cents a share on sales of $233.3 million. A year ago the company earned $15 million, or 27 cents a share, on sales of $210 million. Looking ahead, Ameristar forecast third-quarter earnings of 30 cents to 32 cents a share. Analysts had been expecting earnings of 33 cents a share. Shares were trading down $2.58 to $27.05.

Shares of

24/7 Real Media

( TFSM) rose 17% after the online advertising company posted second-quarter results that beat expectations. The company reported a loss of $200,000, or break-even, on sales of $33.9 million. Excluding items, however, the company would have posted pro forma operating income of $2.3 million, or 5 cents a share. Analysts were expecting earnings of 4 cents a share on sales of $30.6 million. A year ago the company posted pro forma operating income of $700,000, or 2 cents a share, on sales of $19.6 million.

Looking ahead, 24/7 Real Media expects earnings of 4 cents a share on sales of $32 million to $33 million. Analysts are expecting earnings of 4 cents a share on sales of $29.9 million. For the fourth quarter, the company expects earnings of 5 cents to 6 cents a share on sales of $35 million to $37 million. Analysts are expecting earnings of 6 cents a share on sales of $33.9 million. Shares were trading up 78 cents to $5.36.

Ultralife Batteries

(ULBI) - Get Report

fell 10% after the battery maker reported a second-quarter loss and warned that third- and fourth-quarter sales would be lower than expected. The company reported a loss of $1.4 million, or 10 cents a share, on sales of $21.6 million. Analysts were expecting a profit of 3 cents a share on sales of $21 million. Looking ahead, Ultralife forecast third-quarter sales of $21 million, well below the $32.3 million that analysts had been expecting. For the fourth quarter, the company expects sales of $25 million, below the $36.2 million that analysts are expecting. Ultralife's guidance reflects the continued uncertainty of the timing of order flow for its BA-5390 batteries, it said. Shares were trading down $1.55 to $13.57.

Shares of

Dynamic Materials

(BOOM) - Get Report

rose 14% after the company posted a big jump in second-quarter earnings and sales. The metalworking company reported earnings of $2.1 million, or 35 cents a share, on sales of $18.4 million. A year ago the company reported pro forma earnings of $563,000, or 11 cents a share, on sales of $12 million. After the close of the most recent period, Dynamic Materials said that it received a $6 million order that increased its backlog to an all-time high. The order, which will be shipped during the fourth quarter and the first quarter of fiscal 2006, calls for the delivery of more than 2 million pounds of clad plate. Looking ahead, the company said "current activity within many of the industries we target indicates there should be sustained demand for our products going forward." Shares were trading up $6.29 to $51.14.

NYSE

volume leaders included

Time Warner

(TWX)

, up 8 cents to $17.35;

Calpine

(CPN)

, up 21 cents to $3.53;

EDS

(EDS)

, up $2.46 to $23.75;

Motorola

( MOT), down 4 cents to $22;

Tyco

(TYC)

, up 12 cents to $27.55;

Pfizer

(PFE) - Get Report

, down 9 cents to $26.84; and

Lucent Technologies

( LU), down 3 cents to $2.90.

Nasdaq volume leaders included

Microsoft

(MSFT) - Get Report

, up 3 cents to $27.28;

Cisco Systems

(CSCO) - Get Report

, up 13 cents to $19.67;

Intel

(INTC) - Get Report

, down 11 cents to $27.53;

Oracle

(ORCL) - Get Report

, down 5 cents to $13.33;

Human Genome Sciences

( HGSI), down 89 cents to $13.92;

Sirius Satellite Radio

(SIRI) - Get Report

, down 9 cents to $6.86;

Sun Microsystems

(SUNW) - Get Report

, unchanged at $3.81; and

Brocade Communications Systems

( BRCDE), up 8 cents to $4.04.