Among the companies whose shares are expected to see active trade in Thursday's session are Best Buy Co., Google Inc., ATI Technologies Inc. and Cognos Inc.

ATI Technologies Inc. (ATYT) is expected to report fiscal second-quarter earnings of 11 cents a share, according to analysts polled by Thomson First Call.

Best Buy Co. (BBY) is seen posting a fourth-quarter per-share profit of $1.29.

Click here to visit FOXBusiness.com's Investing page.

CarMax Inc.'s (KMX) fourth-quarter profit is expected to be 38 cents a share.

Casual Male Retail Group (CMRG) is expected to post earning of 21 cents a share in its fourth quarter.

Cognos Inc. (COGN) is seen reporting a per-share profit of 38 cents in its fourth quarter.

Stride Rite Corp.'s (SRR) fiscal first-quarter profit is expected to be 25 cents a share

West Marine Inc. (WMAR) is expected to report a fiscal first-quarter loss of 35 cents a share.

After Wednesday's closing bell, Google Inc. (GOOG) said it's making more shares available to the marketplace in an effort to absorb the demand from index funds following the company's inclusion into the S&P 500.

Watch List

AMR Corp. (AMR) , the parent of American Airlines, said it is bringing back former chief financial officer Thomas Horton. See full story.

Arrow International Inc. (ARRO) reported second-quarter net earnings of $12.6 million, or 28 cents a share, compared with $5.35 million, or 12 cents a share, during the year-ago period. Revenue at the Reading, Pa.-based medical device company rose 7% to $116.5 million from $109.2 million.

Biogen Idec Inc. (BIIB) and Elan Corp. Plc (ELN) said they plan to resume clinical trials of their Tysabri multiple sclerosis drug after finding no new instances of a potentially fatal side effect in patients. See full story.

Dean Foods Co. (DF) will replace Maytag Corp. (MYG) in the S&P 500 on a date to be announced, Standard & Poor's said. See full story.

Resources Connection Inc. (RECN) reported fiscal third-quarter net earnings of $13.8 million, or 27 cents a share, up from $13.2 million, or 26 cents a share, in the year-ago period. Revenue at the Costa Mesa, Calif.-based professional services firm rose 19% to $160.3 million from $135.2 million. Analysts polled by Thomson First Call had forecast earnings of 28 cents a share on revenue of $159 million.

Robbins & Myers Inc. (RBN) reported fiscal second-quarter net earnings of $1.2 million, or 8 cents a share, vs. $51,000, or breakeven on a per-share basis, in the year-ago period. Excluding restructuring charges, the per-share profit was 21 cents compared with 11 cents. Revenue at the Dayton, Ohio-based company rose to $150 million from $145.6 million last year.

Ruby Tuesday Inc. (RI) reported third-quarter net earnings of $30.2 million, or 50 cents a share, up 10% from $27.5 million, or 42 cents a share, during the year-ago period. Revenue at the Maryville, Tenn.-based restaurant chain rose to $338.6 million from $289.2 million. Analysts surveyed by Thomson First Call had forecast third-quarter earnings of 46 cents a share on revenue of $334 million.

SigmaTel Inc. (SGTL) slashed its first-quarter sales forecast by as much as 50%, blaming postponed orders and lower prices for its chips used in handheld music players. See full story.

Federal regulators approved Whirlpool Corp.'s (WHR) acquisition of rival Maytag Corp. (MYG) , saying that the proposed deal isn't likely to dampen competition in the appliance industry. See full story.