Among the companies with shares expected to actively trade in Wednesday's session are Walgreen Co. (WAG) and ARM Holdings PLC (ARMH, ARM.LN).

Walgreen's same-store sales rose 2.3% in June, boosted by continued improved performance in the pharmacy section, though the drugstore chain reported another drop in same-store customer traffic. In a note to clients, analysts at SunTrust Robinson Humphrey recently said Wall Street expected a 3.1% increase in same-store sales. Shares fell 1% to $44.00 in premarket trading.

UBS upgraded ARM Holdings to buy from neutral, calling the U.K.-based chip maker's pullback on the recent newsflow overdone and adding that nothing has fundamentally changed in the company's investment case. The firm said that several positives remain, including ARM's ability to penetrate new areas like networking and microcontrollers, and to benefit from low end smart-phone adoption. American depositary shares rose 2.1% to $37.19 premarket.

 
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Avanir Pharmaceuticals Inc. (AVNR) and OptiNose AS reached an exclusive North American licensing deal to develop OptiNose's Breath Powered system, a potential treatment for acute migraines.

Embattled beauty company Avon Products Inc. (AVP) said it would sell its struggling jewelry business for $85 million in cash, removing another drag on its performance as it works to turn itself around under Chief Executive Sheri McCoy.

Standard & Poor's Ratings Services lowered its long-term ratings on Barclays Bank PLC (BCS, BARC.LN), Credit Suisse AG (CS, CSGN.VX) and Deutsche Bank AG (DB, DBK.XE) by a notch, citing increasing risks facing Europe's large banks as regulators and uncertain market conditions continue to make operating in the industry more difficult.

Chesapeake Energy Corp. (CHK) is selling some assets in the Northern Eagle Ford Shale and Haynesville Shale to a unit of Exco Resources Inc. (XCO), with proceeds of the deal estimated at $1 billion.

Entropic Communications Inc. (ENTR) unveiled a restructuring plan which includes a 10% reduction in its global workforce as the chip maker also said it expects second-quarter revenue at the lower end of its previous guidance.

International Speedway Corp.'s (ISCA, ISCB) fiscal second-quarter profit rose 63% on lower debt-related charges, while the racetrack operator's revenue edged down slightly.

Martha Stewart Living Omnimedia Inc. (MSO) said namesake Martha Stewart agreed to a pay cut as part of a modified employment contract with the company in a bid to return the firm to profitability.

Write to Anna Prior at anna.prior@dowjones.com

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