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NEW YORK (TheStreet) -- Drugstore chain Walgreen (WAG) reported third-quarter profit of 65 cents a share vs. the average analyst estimate of 63 cents a share. The company also announced that its contract renewal negotiations with pharmacy benefit manager Express Scripts (ESRX) were unsuccessful. Shares were tumbling 4.4% to $43.20 in premarket trading Tuesday.

Bookstore

Barnes & Noble

(BKS) - Get Barnes & Noble, Inc. Report

is expected to report a fourth-quarter loss of 91 cents a share before the markets open on Tuesday. Shares were popping 7.3% to $21.60.

Natural gas producer

EnCana

(ECA) - Get Encana Corporation Report

saw its shares tumble 3.7% to $29 after announcing that it and

PetroChina

(PTR) - Get PetroChina Company Limited Sponsored ADR Report

ended talks for a proposed joint venture regarding Encana's Cutbank Ridge assets after being unable to reach an agreement.

Nokia

(NOK) - Get Nokia Oyj Sponsored ADR Report

, the Finnish mobile phone maker, said Tuesday it plans to launch its

first Windows-based smartphones later in 2011.

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Shares were rising 2.1% to $5.97.

Conglomerate

General Electric

(GE) - Get General Electric Company (GE) Report

and Chinese battery and automobile maker

BYD

are benefiting from Japan's nuclear crisis, which has increased demand for the types of energy-efficient LED and power packs these companies can produce,

Bloomberg

reported. The report says GE and BYD are now going up against Japan-based electric companies such as

Toshiba

and

Panasonic

( PC) to gain market share in the country's $120 billion electric appliance market. GE shares were up 0.5% to $18.58.

Drug company

AstraZeneca

(AZN) - Get Astrazeneca PLC Sponsored ADR Report

is close to selling its Swedish health care and dental unit Astra Tech to dental products company

Dentsply International

(XRAY) - Get DENTSPLY SIRONA, Inc. Report

in a deal worth about $1.8 billion, according to reports. AstraZeneca shares were unchanged at $49.27.

Cruise company

Carnival

(CCL) - Get Carnival Corporation Report

is expected to report second-quarter profit of 23 cents a share Tuesday. Shares were trading sideways at $35.72.

Software maker

Adobe

(ADBE) - Get Adobe Inc. Report

is expected to post second-quarter earnings of 51 cents a share.

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-- Written by Andrea Tse in New York.

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