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

Among the companies with shares expected to actively trade in Wednesday's session are Ambarella Inc. (AMBA), Mattress Firm Holding Corp. (MFRM), and UnitedHealth Group Inc. (UNH).

Ambarella's fiscal first-quarter profit rose 82% as the manufacturer of image-processing chips posted strong growth in its Internet-protocol security camera and wearable sports camera markets. Shares rose 6.5% to $17.24 in premarket trading, as results topped Wall Street expectations.

Mattress Firm's fiscal first-quarter earnings rose 23% as the bedding retailer's revenue improved, despite a same-store sales decline. Shares climbed 6% to $39.80 premarket as results topped analyst expectations.

UnitedHealth, the biggest managed-care company by revenue, said its board has raised its quarterly dividend 32% and renewed its share-buyback program. Shares rose 1.9% to $63.55 premarket.

SHFL Entertainment Inc.'s (SHFL) fiscal second-quarter profit rose 22% as the casino-games company posted record revenue in its slot machine, shuffler, and specialty table games businesses. Shares rose 5.6% to $18.35 premarket as results topped analysts' expectations.

A downsized offering of 6.5 million Ubiquiti Networks Inc. (UBNT) shares being sold by certain stockholders priced at a 4.4% discount to the Internet-gear manufacturer's Tuesday closing price. Shares slipped 2.9% to $16.25 premarket, above the offering's price of $16.

Avanir Pharmaceuticals Inc. (AVNR) said the U.S. Food and Drug Administration has agreed to an expedited development pathway for the company's next-generation compound, AVP-786, requiring only a limited pre-clinical package as part of the Investigational New Drug application. Shares rose 8.6% to $3.66 premarket.

Yingli Green Energy Holding Co. (YGE) and Trina Solar Ltd. (TSL, K3KD.SG) said the European Commission has imposed a preliminary antidumping duty of 11.8% on solar products made in China through Aug. 5. The tariffs are effective Thursday. Chinese solar-products maker Yingli said the duty on its products will rise to 37.3% from Aug. 6 until the final ruling in December, unless there is a negotiated solution between China and the European Commission. Yingli's American depositary shares fell 4.4% to $2.82 premarket, while Trina dropped 7% to $5.70. Meanwhile, fellow solar company JA Solar Holdings Co. (JASO) dropped 6.8% to $7.08.

Kandi Technologies Group Inc. (KNDI) said that its first pur electric sedan--developed along with Geely Automobile Holdings Ltd. (GELYY, 0175.HK)--has been approved by China's Ministry of Industry and Information Technology. Shares jumped 20% to $4.71 premarket.

 
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Analogic Corp.'s (ALOG) fiscal third-quarter earnings fell 29% as the electronics-component maker's increase in operating expenses masked slight revenue growth. Given current market conditions and the ultrasound segment's transition to high-market direct products, Analogic lowered its full-year revenue view.

Aveo Pharmaceuticals Inc. (AVEO) plans to reduce its workforce by 62% as the developer of cancer therapies restructures to refocus on the clinical development of tivozanib in colorectal and breast cancer, as well as advancing key pipeline and preclinical assets.

Bazaarvoice Inc.'s (BV) fiscal fourth-quarter loss widened as the software company logged higher sales and marketing costs and acquisition-related expenses, masking double-digit revenue growth. However, results beat Wall Street expectations.

Bob Evans Farms Inc.'s (BOBE) fiscal fourth-quarter earnings rose 23% thanks to a tax benefit masking losses related to the sale of its Mimi's Cafe business and weaker revenue. Adjusted earnings and revenue beat expectations.

Dish Network Corp. (DISH) disputed legal and governance objections raised by Sprint Nextel Corp. (S) to Dish's tender offer for Clearwire Corp. (CLWR), elevating the war of words between the companies seeking control of the mobile broadband provider.

EXFO Inc. (EXFO) said its fiscal third-quarter results will miss its prior expectations, as weak economic conditions hurt the maker of telecommunications-testing equipment's bookings in Europe, the Middle East and Asia.

Forest City Enterprises Inc. (FCEA) swung to a fiscal first-quarter loss, mostly owing to lower commercial land sales, decreased capitalized interest related to the reduction of its under-construction pipeline and other impacts.

Mitcham Industries Inc.'s (MIND) fiscal first-quarter earnings fell 25% as the seismic-equipment supplier posted weaker revenue, although margins improved. Results missed analysts' expectations.

Tile Shop Holdings Inc. (TTS) said an offering of about 4.3 million shares by certain stockholders priced at a 1.6% discount to the company's closing price.

Zogenix Inc. (ZGNX) said it will cut its headcount by about 37% to help extend its cash as it waits for U.S. Food and Drug Administration approval for its new drug application for Zohydro ER--its treatment for chronic pain--and other milestones.

Write to Anna Prior at [e-mail]

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