Shares of NCI Building Systems ( NCS) were among the NYSE's losers Thursday, sliding 7% after the building-products company posted mixed fourth-quarter results and gave soft guidance for the first quarter.

For the quarter ended Oct. 29, NCI earned $28 million, or $1.33 a share, up from $19.8 million, or 96 cents a share, a year earlier. Excluding items, the company earned $1.41 a share, beating Thomson First Call's average analyst forecast of $1.34. Revenue totaled $498.5 million and was shy of analysts' estimate of $503.5 million.

Looking ahead, NCI forecast first-quarter earnings of 50 cents to 55 cents a share, well below the 78 cents a share that analysts projected. For all of fiscal 2007, the company sees earnings of $4.55 to $4.80 a share. Analysts expect 2007 earnings of $4.67 a share. Shares were trading down $4.14 to $52.88.

Keystone Automotive ( KEYS - Get Report) shares plunged 21% after a judge ruled that the auto-parts distributor infringed upon certain Ford ( F - Get Report) patents. The judge ruled that seven of 10 design patents directed to parts for the Ford F-150 truck infringed on Ford's design patents.

Keystone plans to file a petition urging the International Trade Commission to review the ruling. If the commission finds a violation, it will issue an order to prohibit further importation of the covered parts into the U.S. Shares of Keystone were down $8.02 to $30.74.

Shares of News Corp. ( NWS - Get Report) rose 4% after a report in The Wall Street Journal said the media giant is near an asset-exchange deal with Liberty Media . According to the report, News Corp. will exchange Liberty's $11 billion stake in the company for News Corp.'s 38.6% stake in satellite outfit DirecTV ( DTV). A deal is expected to be finalized in the next few weeks, the Journal said, citing people close to the situation.

Shares of News Corp. recently were up 80 cents to $22.54, while Liberty Media was adding $2.57, or 3%, to $90.50. DirecTV shares were down 3 cents to $23.50.

Pathmark Stores rose 4% after the supermarket operator posted a narrower-than-expected loss. For the period ended Oct. 28, the company recorded a loss of $5.8 million, or 11 cents a share, on revenue of $978.1 million. Analysts expected a loss of 20 cents a share and revenue of $992 million. A year earlier, the company posted a loss of $18.3 million, or 36 cents a share, on revenue of $980.5 million. Shares recently were up 38 cents to $11.17.

Gartner ( IT - Get Report) rose 4% after the IT research company it plans to buy nearly 10.4 million shares of stock from Silver Lake Partners. Gartner will buy its own stock back for $200 million, or $19.25 a share. After the purchase, Silver Lake's ownership interest will fall to 12.7% from 20.7%.

In light of the purchase, Gartner has suspended its stock-buyback program, the company said. Shares were trading up 84 cents to $20.75.

Shares of Greif ( GEF - Get Report) rose 5% after the industrial-packaging company's fourth-quarter results beat forecasts. For the quarter ended Oct. 31, the company earned $41.7 million, or $1.41 a share, on revenue of $735.6 million. Excluding items, earnings were $49 million, or $1.66 a share. Analysts expected earnings of $1.32 a share, before items. During the year-earlier quarter, the company earned $22 million, or 75 cents a share, on revenue of $619.7 million. Excluding items, year-ago earnings were $30.2 million, or $1.02 a share.

For fiscal 2007, Greif projected earnings of $5.45 to $5.55 a share, well ahead of Wall Street's forecast of $5.03 a share. The stock was up $5.36 to $109.14.

NYSE volume leaders included Ford; Pfizer ( PFE), down 1 cent to $24.79; Motorola , down 41 cents to $21.57; Corning ( GLW), down $1 to $20.89; Exxon Mobil ( XOM), down 83 cents to $75.48; Time Warner ( TWX), up 30 cents to $20.72; EMC ( EMC), down 7 cents to $13.34; Alcatel Lucent ( ALU), up 51 cents to $13.78; and General Electric ( GE), up 21 cents to $35.32.

Nasdaq volume leaders included Oracle ( ORCL), down 47 cents to $17.41; Level 3 Communications ( LVLT), up 22 cents to $5.76; Sun Microsystems ( SUNW), up 8 cents to $5.65; Sirius Satellite Radio ( SIRI), up 9 cents to $3.92; Intel ( INTC), up 10 cents to $21; Qualcomm ( QCOM), up $1.32 to $40.50; Apple Computer ( AAPL), down $1.21 to $88.62; Microsoft ( MSFT), down 6 cents to $28.93; and Cisco Systems ( CSCO), up 3 cents to $27.12.