Among the companies with shares expected to actively trade in Thursday's session are Pandora Media Inc. (P), ING Groep NV (ING, INGA.AE) and Flagstone Reinsurance Holdings Ltd. (FSR).

Pandora reported its fiscal second-quarter loss widened as costs outpaced revenue growth. But the Internet radio firm also raised its financial guidance and posted encouraging numbers for its mobile advertising efforts. On an adjusted, per-share basis, Pandora posted a break-even second quarter, while an adjusted loss had been expected. Shares rose 16% to $11.65 in premarket trading.

ING agreed to sell its ING Direct Canada unit to Bank of Nova Scotia (BNS, BNS.T) for 3.13 billion Canadian dollars, or $3.17 billion, the latest in a string of big purchases by the Canadian bank and its largest-ever takeover. ING shares rose 3.9% to $7.46 premarket as it was widely seen the bank would use the funds from the sale to repay the state and plug a capital shortfall at its insurance business.

Shares of Flagstone jumped 18% to $8.30 in premarket trading as the company said it has reached an agreement to be acquired by reinsurance and insurance provider Validus Holdings Ltd. (VR). The deal, which the companies valued at $623.2 million, represents a 19% premium to Wednesday's close and is expected to be completed in the fourth quarter.

LyondellBasell Industries N.V. (LYB) will replace Sears Holdings Corp. (SHLD) in the S&P 500 index after the market close on Sept. 4, S&P Dow Jones Indices LLC said. LyondellBasell shares rose 5% premarket to $49.24, while Sears shares slipped 4.1% to $55.10.

Vera Bradley Inc.'s (VRA) fiscal second-quarter earnings slipped 1.9% as margins weakened, though revenue improved. Shares sank 8.6% to $21.58 premarket as earnings fell short of the handbag maker's expectations and as the company lowered its full-year guidance.

TiVo Inc.'s (TIVO) fiscal second-quarter loss widened, as the digital-video-recorder company's higher expenses masked continued growth in its subscriber base. However, shares jumped 3.6% premarket to $9.70 on the improved subscriber rolls and lower churn rates.

Pluristem Therapeutics Inc. (PSTI) filed with the U.S. Food and Drug Administration for orphan drug status for its aplastic anemia treatment. Shares of the Israel-based drug developer, which focuses on placenta-based cell therapies, rose 2.3% to $4.03 in premarket trading.

Ampal-American Israel Corp. (AMPL, AMPL.TV), a company that buys interests in businesses located in Israel or that are Israel-related, said it's filed a petition for Chapter 11 reorganization in the US Bankruptcy Court for the Southern District of New York. The company said it has been seeking to negotiate agreements with its creditors for eight months. Shares fell 53% to $1.32 in premarket trading.

Ciena Corp.'s (CIEN) fiscal third-quarter loss narrowed slightly as the networking-equipment company saw strong revenue growth, buoyed by its packet-optical transport segment. Still, shares sank 10% to $15.05 premarket as earnings missed Wall Street expectations.

Oxford Industries Inc.'s (OXM) fiscal second-quarter earnings jumped 93% as the apparel company reported strong sales gains at Tommy Bahama and Lilly Pulitzer. However, shares fell 5.1% to $50 premarket as the company offered guidance for the current quarter below analyst expectations.

Genetic Technologies Ltd. (GENE, GTG) filed a patent infringement suit against Reproductive Genetics Institute Inc. over the diagnostics company's non-coding DNA technologies. Shares fell 5.6% to $3.71 premarket.

 
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CareFusion Corp. (CFN) said it will delay filing its annual earnings report for the latest fiscal year with the Securities and Exchange Commission to discuss the medical-device company's accounting policy for sales-type leases in its Pyxis dispensing-product line.

Casella Waste Systems Inc.'s (CWST) fiscal first-quarter loss widened as recycling-commodity prices weakened and special-waste volumes at its western New York landfills continued to decline.

Christopher & Banks Corp.'s (CBK) fiscal second-quarter loss narrowed amid lower overhead costs and a benefit related to restructuring charges. The company reported better-than-expected margins and predicted same-store sales growth in coming quarters.

Restaurant chain Chuy's Holdings Inc.'s (CHUY) second-quarter income soared in its first earnings release as a public company, with same-store sales growth boosting revenue.

Flow International Corp.'s (FLOW) fiscal first-quarter profit soared as the maker of industrial water-jet machines posted double-digit growth in its core business. Revenue exceeded analyst expectations.

Greif Inc.'s (GEF) fiscal third-quarter earnings fell 39% as the packaging company faced weaker demand and lost income due to currency conversion.

Fitch Ratings raised its outlook on Ingredion Inc. (INGR) to positive from stable, pointing to the food-ingredient company's significant progress integrating its National Starch purchase and strong earnings since the acquisition.

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

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