Among the companies whose shares are expected to see active trade in Tuesday's session are Cablevision Systems Corp., Teva Pharmaceutical, MBIA Inc. and EchoStar Communications Corp.

Alcan Inc. (AL) is expected to post third-quarter earnings of 48 cents a share, according to analysts polled by Thomson First Call.

Blockbuster Inc.'s (BBI) third quarter is expected to show a loss of 13 cents a share.

Cablevision Systems Corp. (CVC) is seen posting a third quarter loss of 8 cents a share.

Dynegy Inc. (DYN) is expected to report per-share earnings of 11 cents in its third quarter.

EchoStar Communications Corp.'s (DISH) third-quarter results are expected to show a profit of 47 cents a share.

MBIA Inc. (MBI) is seen reporting earnings of $1.38 a share in its third quarter.

Pixar Animation Studios (PIXR) is expected to report third quarter earnings of 11 cents a share.

ProAssurance Corp.'s (PRA) third quarter is expected to show a per-share profit of 76 cents.

Teva Pharmaceutical Industries Ltd. (TEVA) is seen posting earnings of 38 cents a share in its third quarter.

Visteon Corp. (VC) is expected to report a third-quarter loss of $1.34 a share.

After Monday's closing bell, Netease Inc. (NTES) , a China-based Internet media and online video-game company, posted earnings that fell short of analysts' expectations.

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Alpharma Inc. (ALO) reported third-quarter net earnings of $17.8 million, or 34 cents a share. During the same period a year ago, Alpharma reported a net loss of $4.67 million, or 9 cents a share. The Fort Lee, N.J.-based specialty pharmacy company posted revenue of $349.1 million vs. $297.5 million. Analysts surveyed by Thomson First Call had forecast third-quarter earnings of 13 cents a share on revenue of $339 million.

Andrx Corp. (ADRX) reported third-quarter net earnings of $10.9 million, or 15 cents a share, down 7.9% from $11.8 million, or 16 cents a share, during the same period last year. The Fort Lauderdale, Fla.-based pharmaceutical company posted revenue of $257 million vs. $272.3 million. Analysts surveyed by Thomson First Call had forecast third-quarter earnings of 18 cents a share on revenue of $257 million.

Regulators filed an unfair-competition lawsuit against Barr Pharmaceuticals Inc. (BRL) and Warner Chilcott PLC, accusing the two firms of depriving consumers of a low-priced generic version of an oral contraceptive.

Bois d'Arc Energy Inc. (BDE) reported third-quarter net earnings of $13.3 million, or 21 cents a share, vs. net income of $7.64 million in the year-ago period. Revenue at the Houston-based oil and gas company rose to $43.4 million from $37.4 million last year. Production in the third quarter totaled 4.8 billion cubic feet equivalent of natural gas, 18% lower than production of 5.8 Bcfe a year ago. Bois d'Arc had substantially all of its production shut in for 37 days as a result of hurricanes. As a result, the company said 2.1 Bcfe, or 30% of production, was deferred in the third quarter.

Churchill Downs Inc. (CHDN) reported a third-quarter net profit of $71.6 million, or $5.30 a share. In the same period last year, the company reported a net loss of $3.84 million, or 29 cents a share. During the quarter, Churchill Downs recognized a gain of $69.9 million on the sale of the assets of Hollywood Park. Revenue rose to $112 million from $102.5 million.

Comstock Homebuilding Cos. Inc. (CHCI) said third-quarter revenue jumped 204% from last year to $78.4 million. The company said net income was 81 cents a share, beating Thomson First Call estimates by a penny.

Fiserv Inc. (FISV) named Jeffery Yabuki, a former H&R Block Inc. (HRB) executive, as its new CEO following a year-long search for a replacement for Leslie Muma, who is retiring.

Innovex Inc. (INVX) reported a fiscal fourth-quarter net loss of $8.49 million, or 44 cents a share, vs. a net loss of $2.35 million, or 12 cents a share, in the year-ago period. Excluding a deferred tax valuation adjustment and a restructuring charge, the loss was 11 cents a share. Revenue at the Maple Plain, Minn.-based company rose to $47.5 million from $37.1 million last year.

MortgageIT Holdings Inc. (MHL) reported third-quarter net earnings of $8.67 million, or 30 cents a share. In the same period last year, the company had a restated loss of $12.6 million, or 93 cents a share. On an adjusted basis, third-quarter earnings were 36 cents a share. Revenue at the New York-based real estate investment trust rose to $84 million from a restated $22.6 million last year.

Northwest Airlines (NWACQ) announced that the leadership of its flight attendants and pilots unions have agreed to temporary cost cuts that could save the bankrupt No. 4 airline more than $300 million, though a deal with the machinists remained elusive.

NovaStar Financial Inc. (NFI) said its quarterly profit rose 52%, aided by a jump in net interest income from its portfolio.

OpenTV Corp. (OPTV) reported a third-quarter net loss of $4.05 million, or 3 cents a share, vs. a net loss of $4.76 million, or 4 cents a share, during the same period a year ago. The San Francisco-based provider of software, applications and services for interactive television posted revenue of $19.5 million vs. $16.6 million. Analysts surveyed by Thomson First Call had forecast a third-quarter loss of 2 cents a share on revenue of $22 million.

Six Flags Inc. (PKS) third-quarter revenue rose almost 10%, the amusement-park operator said. Total revenue hit $559 million, up from $509 million a year ago, while attendance climbed 4% and per capita revenue gained 5.5%. The company also reaffirmed its outlook for full-year adjusted earnings before interest, taxes, depreciation and amortization of $300 million. Six Flags also said it expects to have full-year revenue growth "at virtually every park."

Sotheby's Holdings Inc. (BID) reported a third-quarter net loss of $21 million, or 34 cents a share, vs. a net loss of $28.7 million, or 46 cents a share, in the year-ago period. Revenue at the New York-based auction house holding company rose to $56.4 million from $44.3 million last year.

WD-40 Co. (WDFC) reported fiscal fourth-quarter net earnings of $10.5 million, or 63 cents a share, up 6.4% from $8.94 million, or 53 cents a share, last year. Revenue at the San Diego-based maker of multi-purpose lubricants and household products rose to $76.3 million from $71.7 million last year.