Shares of Steven Madden ( SHOO - Get Report) were among the Nasdaq's winners Thursday, jumping 13% after the footwear company previewed first-quarter results that were well above expectations.

The company expects to post earnings of 72 cents to 74 cents a share and revenue of $108 million. Analysts polled by Thomson First Call project earnings of 22 cents a share on revenue of $90.7 million. A year earlier, the company earned 7 cents a share. Sales were driven by a stronger-than-expected wholesale segment. "Led by Steve, our design team continued to deliver fresh, trend-right products to our customers and this resulted in a very strong performance from our existing brands," the company said. Steven Madden plans to issue its full results on May 2. Shares were trading up $4.99 to $43.12.

Shares of Swift Transportation ( SWFT) soared 20% after the trucking company posted first-quarter earnings that handily beat Wall Street's forecast. The company earned $37.5 million, or 50 cents a share, on revenue of $763 million. Excluding items, the company earned $33.9 million, or 45 cents a share. Analysts expected earnings of 25 cents a share on revenue of $802.5 million. During the year-earlier period, the company earned $19.4 million, or 26 cents a share, on revenue of $742.6 million. Excluding items, the company earned $15.7 million, or 21 cents a share, during the year-earlier quarter.

The company said investors shouldn't expect the same kind of blowout performance on a regular basis. "While we are delighted with this quarter's progress and results, the process to return our company to profitability levels we once enjoyed is a journey," the company said. "We caution against projecting the scope of this quarter's rate of improvement out for subsequent quarters." Shares recently gained $5.16 to $30.41.

Briggs & Stratton ( BGG - Get Report) slumped 10% after the engine maker posted disappointing third-quarter results and cut its full-year earnings outlook. The company earned $60 million, or $1.16 a share, in the March quarter, down from $80.6 million, or $1.56 a share, a year earlier. Analysts expected earnings of $1.29 a share. Revenue fell to $800.2 million from $840.5 million, and missed analysts' forecast of $864.7 million.

Looking ahead, Briggs & Stratton now sees fiscal 2006 earnings of $132 million to $135 million, or $2.56 to $2.62 a share. In January, the company projected earnings of $144 million to $150 million, or $2.75 to $2.87 a share. Analysts, meanwhile, forecast earnings of $2.80 a share. Shares recently had sunk $3.93 to $34.26.

Shares of International Game Technology ( IGT - Get Report) rose 9% after the slot-machine maker posted second-quarter results that topped expectations. For the quarter ended March 31, the company earned $124 million, or 35 cents a share, on revenue of $644.4 million. Analysts expected earnings of 31 cents a share on revenue of $602.1 million. During the year-earlier period, the company earned $93.9 million, or 26 cents a share, on revenue of $551.1 million. Shares were trading up $3.24 to $38.16.

StanCorp Financial ( SFG) slumped 17% after the insurance company warned that first-quarter earnings would fall well below forecasts. Excluding items, the company sees earnings of 72 cents to 74 cents a share, down from year-ago earnings of 77 cents a share, and below the 96 cents a share that analysts projected. "Results for the quarter were influenced by comparatively less favorable claims experience in our group life, group disability and individual disability insurance businesses," the company said. StanCorp plans to issue first-quarter results on April 25. Shares were down $9.52 to $46.23.

NYSE volume leaders included Ford ( F), up 20 cents to $7.80; General Motors ( GM - Get Report), up $1.64 to $22.21; EMC ( EMC), up 34 cents to $13.68; Texas Instruments ( TXN - Get Report), up $1.55 to $36; Nokia ( NOK), up $1.17 to $22.91; Boston Scientific ( BSX), up 74 cents to $22.53; UnitedHealth Group ( UNH), up $1.12 to $50.30; and Lucent Technologies ( LU), unchanged at $3.05.

Nasdaq volume leaders included Intel ( INTC), up 25 cents to $19.81; Sun Microsystems ( SUNW), up 10 cents to $5.05; Ubiquitel ( UPCS), up 7 cents to $10.26; Apple Computer ( AAPL), up $2.73 to $68.38; eBay ( EBAY), down $3.39 to $36.96; Gilead Sciences ( GILD), up 31 cents to $65.44; Juniper Networks ( JNPR), down $1.65 to $18.65; PortalPlayer ( PLAY), down $9.80 to $12.79; Microsoft ( MSFT), up 8 cents to $27.11; Oracle ( ORCL), down 13 cents to $14.18; and Cisco ( CSCO), up 12 cents to $21.38.