Among the companies whose shares are expected to see active trade in Tuesday's session are Alcoa Inc., Genentech Inc., Wyeth Laboratories and Endo Pharmaceuticals Holdings Inc.

Genentech Inc. (DNA) is expected to report fourth-quarter earnings of 34 cents a share, according to analysts polled by Thomson First Call.

Supervalu Inc. (SVU) is seen posting a fiscal third-quarter profit of 50 cents a share.

After Monday's closing bell, Alcoa Inc. (AA) posted a sharply lower fourth-quarter profit, blaming the weaker results on a long list of production outages, strikes and restructuring costs.

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Applebee's International Inc. (APPB) it plans to separate the chairman and chief executive positions this summer. Lloyd Hill will continue to serve as chairman and a new CEO will be named. In addition, the Overland Park, Kan.-based restaurant chain said systemwide same-store sales rose 1.7% in December, 1% in the fourth quarter, and 8.2% in fiscal 2005. The company expects fourth-quarter earnings of 27 cents a share, and fiscal 2005 earnings of $1.30 a share, excluding an impairment charge of 3 cents. For fiscal 2006, the company forecast fiscal earnings of $1.26 to $1.30 a share, or $1.43 to $1.47 a share excluding stock option-expense of 17 cents a share.

Belo Corp. (BLC) said it expects revenue for the company as a whole to increase in the high-single digits in 2006. It also sees consolidated earnings before interest, taxes, depreciation and amortization as well as earnings from operations, increasing in the high-single digits for the year. Belo expects spot and total revenue for its television group to increase in the mid-to-high single digits, and to capture significant incremental revenue from the Super Bowl, the Olympics, and political advertising in 2006.

Big 5 Sporting Goods Corp. (BGFV) net fourth-quarter sales were $217.1 million vs. $217.6 million in the same quarter last year, which had an additional week. On a comparable 13-week basis, fourth-quarter net sales increased 5.1% and same-store sales rose 1.5%, the company said. Net sales in 2005 rose 3.8%, to $812 million from $782.2 million in 2004. On a comparable 52-week basis, the El Segundo, Calif.-based retailer said net sales in 2005 increased 5.7% and same-store sales increased 2.4%. Big 5 also lowered its fourth-quarter earnings forecast to a range of 32 cents to 35 cents a share from 40 cents to 44 cents a share.

Bluefly Inc. (BFLY) said it expects fourth-quarter sales to rise at least 45% from last year's results. The New York-based online clothing retailer added that it expects full-year sales to rise 34% from last year.

Charlotte Russe Holdings Inc. (CHIC) it expects fiscal first-quarter earnings of 28 cents to 30 cents a share compared with its previous forecast of 17 cents to 21 cents a share. The San Diego-based retailer said same-store sales increased by 15.6% in the first quarter, and net sales rose 34% during the period. Additionally, the company said it expects a second-quarter loss equal to or slightly greater than the 3 cents a share loss reported last year.

Cognex Corp. (CGNX) lowered its financial forecast for the fourth quarter, primarily because two large orders that were in backlog were rescheduled and another order was cancelled. The company, whose products are used in semiconductor and electronics manufacturing equipment, now sees per-share earnings in the range of 22 cents to 24 cents, compared with its previous forecast of 24 cents to 26 cents. Cognex also sees revenue coming in slightly below $61 million, which was the low end of its previously announced forecast. Analysts surveyed by Thomson First Call currently expect Cognex to post earnings of 26 cents a share on revenue of $63 million.

Cost Plus Inc. (CPWM) said fourth-quarter results will come in at the low end of the company's prior outlook. Cost Plus expects per-share earnings for the quarter of 98 cents to $1.08. Analysts polled by Thomson First Call are looking for per-share earnings of $1. The company's outlook for total sales is a range of $363 million to $375 million, compared with the consensus outlook of $367 million.

Endo Pharmaceuticals Holdings Inc. (ENDP) forecast 2006 earnings of $1.75 to $1.80 a share, excluding some items, on sales of $860 million to $880 million. Analysts polled by Thomson First Call are estimating 2006 earnings of $1.65 to $1.95 a share on sales of $820 million.

Genzyme Corp. (GENZ) said its preliminary results show that fourth-quarter revenue rose 22%, to $722 million from $591 million last year, and that 2005 revenue grew 24%, to $2.7 billion from $2.2 billion. The Cambridge, Mass.-based biotechnology company also said it expects 2006 earnings of $1.78 to $1.88 a share on revenue of $3.1 billion to $3.3 billion. The company forecast 2006 earnings of $2.65 to $2.75 a share, excluding some items. Analysts polled by Thomson First Call are expecting 2006 earnings of $2.75 a share on $3.2 billion.

JDA Software Group Inc. (JDAS) warned it would post lower-than-expected quarterly results because some pending deals didn't close until after New Year's.

NBTY Inc. (NTY) said its preliminary results show that first-quarter sales rose 9%, to $458 million from $420 million. The Bohemia, N.Y.-based nutritional supplements company said the increase includes $33 million in net sales from its recent acquisitions.

Planar Systems (PLNR) increased its fourth-quarter sales and earnings forecast on higher-than-expected sales of some higher margin display products in its industrial and medical divisions. The flat-panel display systems maker now expects revenue of $56 million to $57 million and earnings of 8 cents to 10 cents a share, including stock-based compensation expense. In November, Planar forecast sales of $50 million to $55 million, and expected earnings to break even on a per-share basis, including stock-option expensing.

WD-40 Co. (WDFC) said first-quarter net earnings were $7.51 million, or 45 cents a share, compared with $5.64 million, or 34 cents a share, during the year-earlier period. Analysts polled by Thomson First Call had expected the San Diego, Calif.-based company to report per-share earnings of 35 cents. WD-40 reported quarterly revenue of $67.2 million, compared with $60.7 million last year. Analysts had expected revenue of $66 million.

Wyeth Laboratories (WYE) offered an estimate for the 2006 fiscal year, but the company's forecast puts it below consensus views.