Shares of PeopleSupport ( PSPT) jumped in after-hours trading Monday as the outsourcing-services provider beat Wall Street's second-quarter earnings expectation and offered a strong guidance.

PeopleSupport reported earnings of $3.8 million or 20 cents a share, up from $2.2 million, or 12 cents a share, a year ago. Revenue climbed 76% to $25.9 million. Analysts polled by Thomson First Call had expected earnings of 11 cents a share and revenue of $23.7 million.

Looking ahead, the company forecast third-quarter earnings of 13 cents to 15 cents a share, with revenue between $26.2 million and $27 million. Analysts, on average, predict earnings of 11 cents a share and revenue of $24.8 million. For the full year, PeopleSupport expects earnings of 55 cents to 60 cents a share and revenue of $101 million to $103 million. Analysts are looking for earnings of 47 cents a share and revenue of $96.7 million. Shares advanced $1.97, or 15%, to $13.80 in after-hours trading.

Affymetrix ( AFFX) stumbled after the biotech company swung to a wider-than-expected second-quarter loss. The company recorded a loss of $10.1 million, or 15 cents a share, compared with income of $7.8 million, or 12 cents a share, a year ago. The company's latest-quarter results also include costs for stock options, which were not factored into the year-earlier results. Excluding those costs, Affymetrix would have posted a loss of $6.2 million, or 9 cents a share. Wall Street expected a loss of 1 cent a share. Revenue totaled $80.1 million, down from $84.1 million a year ago and below analysts' target of $88.7 million.

Affymetrix also said that it conducted an internal review of its historical stock-option grant practices from Jan. 1, 1997, through May 31, 2006, and found "certain documentation lapses" from 1997 to 1999. There was one instance where the company determined the option grant date should have been recorded differently. The review, though, didn't indicate any pattern of inappropriately backdating grant dates to provide "discounted" or "in-the-money" grants, Affymetrix said. Shares slipped $1.97, or 9.1%, to $19.60 after hours.

Shares of Altiris ( ATRS) climbed late Monday after the IT software company reported higher-than-expected second-quarter results. The company earned $2.8 million, or 10 cents a share, compared with $4.6 million, or 16 cents a share, a year earlier. Excluding charges, earnings were $7.3 million, or 25 cents a share, compared with Wall Street's estimate of 16 cents. Revenue increased 20% over a year ago to $55.6 million, beating analysts' target of $52.6 million. Altiris also said that its board authorized the repurchase of up to $50 million of its stock. Shares rose $1.85, or 11%, to $19.11 after hours.

Whole Foods Market ( WFMI) slipped after the after the organic-foods chain posted soft sales growth for the third quarter. The Austin, Texas, company earned $53.9 million, or 37 cents a share, for the quarter ended July 2, up from $40.4 million, or 29 cents a share, a year ago. Sales rose 18% from a year ago to $1.34 billion. Analysts expected a profit of 34 cents a share on sales of $1.36 billion.

Whole Foods said the latest quarter showed 14% weighted average square-footage growth and 9.9% comparable-store sales growth. Sales in identical stores, excluding two relocated stores and one major expansion, increased 9.6%. Whole Foods said an anticipated acceleration in leases tendered and square footage opening in 2007 is expected to result in materially higher pre-opening and relocation expense year over year. That, in turn, is expected to hit earnings per share growth. Shares fell $4.17, or 7.3%, to $53.34 after hours.

Powerwave ( PWAV) lost ground after the wireless-component supplier missed Wall Street's second-quarter earnings expectation. The company reported a profit of $12.6 million, or 10 cents a share, compared with $13 million, or 11 cents a share, a year earlier. Excluding special charges, Powerwave had adjusted income of $17.5 million, or 13 cents a share. The adjusted earnings were a penny short of the First Call mean estimate and compare with a year-ago adjusted profit of 14 cents a share. Sales rose to $232.4 million from $186.3 million, but missed analysts' projection of $247.2 million. Shares tumbled 90 cents, or 11%, to $7.04 in after-hours trading Monday.

Shares of Hot Topic ( HOTT) got cold after the teen-apparel retailer offered up disappointing July same-store sales figures and projected a second-quarter loss. The company said July same-store sales dropped 7.2%, while total sales rose 2% to $53.1 million. For the second quarter, same-store sales declined 5.5% and total sales increased 5% to $160.4 million. The company expects to post a loss of 2 cents to 3 cents a share for the quarter. Analysts, on average, expected break-even results for the period. After hours, Hot Topic shares dropped $1.87, or 13%, to $12.83.