U.S. HOT STOCK FUTURES: HOT STOCKS TO WATCH

Among the companies with shares expected to actively trade in Tuesday's session are Seagate Technology Inc. (STX), Humana Inc. (HUM) and Dendreon Corp. (DNDN).

Seagate reported record fiscal fourth-quarter revenue but tempered its sales growth expectations for the calendar year as demand softens and hard-disk drive rivals recover faster than anticipated from severe Asian flooding. Shares of the company fell 7.7% to $28.08 after hours.

Humana reported weaker second-quarter earnings, pressured by a recent legal settlement, while cutting its full-year forecast because of high costs for both new and existing customers on Medicare plans. Shares were off 8.9% to $64.30 after hours.

Dendreon unveiled restructuring plans that include cutting more than 600 jobs over the next year as the pharmaceutical company continues to lose money due to slow sales of its prostate-cancer treatment. Shares of the company sank 19% to $4.98 in after-hours trading.

Revenue-manager Accretive Health Inc. (AH) said it reached a $2.5 million settlement with the Minnesota Attorney General's office over an ongoing lawsuit and said it voluntarily decided to cease all its operations in Minnesota. Shares climbed 22% to $12.25 after hours.

CafePress Inc.'s (PRSS) second-quarter loss widened on higher marketing costs and the e-commerce company offered a downbeat outlook for the second half of the year. Shares dove 37% to $8.65 after hours.

Cirrus Logic Inc.'s (CRUS) fiscal first-quarter income dropped 25% as the chip maker saw higher expenses mask stronger revenue, bolstered by growth in its audio products segments. But shares jumped 20% after hours to $35.66 after the company predicted strongly upbeat fiscal third-quarter revenue and narrowly beat earnings expectations for the latest period.

Fiserv Inc.'s (FISV) second-quarter earnings increased 79% as a loss from early debt extinguishment weighed on the financial technology provider's year-ago results and as revenue increased. Shares were up 3.8% to $75 after-hours as adjusted profits beat analyst expectations.

Forest Oil Corp. (FST) swung to an unexpected loss in the second quarter amid a ceiling test write-down related to low natural-gas prices as the exploration-and-production company was also hurt by lower revenue. Shares slipped 9.4% to $6.40 after hours.

Herbalife Ltd.'s (HLF) second-quarter profit rose 20% as the nutrition company saw broad-based growth in sales volume. The company also raised its full-year earnings outlook. Shares were up 6% to $54.79 after hours.

Masco Corp. (MAS) swung to a second-quarter loss, as a large litigation settlement charge weighed down the period. Shares slumped 8.8% to $11.97 after hours.

Natural-gas exploration company McMoRan Exploration Co. (MMR) said it will delay a flow test previously scheduled for this week at its Davy Jones No. 1 well until a later date sometime in August, saying a seal assembly located at about 16,400 feet needed to be replaced. Shares slid 9.2% to $12.54 after hours.

PMC-Sierra Inc.'s (PMCS) second-quarter profit rose 58% as a recovery of income taxes boosted the chip maker's bottom line, though revenue and adjusted profits slipped from a year earlier. Shares were down 9.4% to $5.42 after hours as the company issued downbeat guidance for the current quarter.

RealD Inc.'s (RLD) fiscal first-quarter income fell 69% as the 3-D technology company's margins suffered on higher licensing and product costs. Shares plummeted 20% to $10.11 in after-hours trading as results missed analyst expectations.

Regeneron Pharmaceuticals Inc. (REGN) said the U.S. Food and Drug Administration didn't approve its Arcalyst drug as a treatment for gout and said the agency needs additional clinical data. Shares ....