Stocks to Watch: JPM, JWN & More

Check out which companies are making headlines after-the-bell Thursday:

Yahoo - CEO Scott Thompson told top executives at a meeting he never provided incorrect information to the company, referring to the recent controversy over his educational background. The stock was slightly negative in extended-hours trading. (Click here for after-hours quote.)

JPMorgan - The financial giant said its chief investment office had unexpected trading losses that could reach at least $800 million in the second quarter. Since the end of March, the company's chief investment office "has had significant mark-to-market losses in its synthetic credit portfolio," the bank said in a filing.

Separately, S&P downgraded the banking giant as residential mortgage specialist to "average" from "above average." The stock fell sharply in extended-hours trading. (Click here for after-hours quote.)

Other banks including BofA and GoldmanSachs also slumped in extended-hours trading.

Nordstrom - The department store chain posted earnings of 70 cents a share, missing expectations for 75 cents a share. Still, revenue came in at $2.54 billion, slightly beating projections for $2.52. But shares of the firm slumped in extended-hours trading after the company handed in a full-year guidance that was below Wall Street estimates. (Click here for after-hours quote.)

Dillards - The department store chain reported earnings of $1.89 a share, on revenue of $1.55 billion, topping expectations for $1.67 a share on sales of $1.53 billion. Shares of the firm rallied in extended-hours trading. (Click here for after-hours quote.)

Arena Pharmaceuticals - The drugmaker's experimental obesity pill won an advisory panel's support. Shares of the firm shot up more than 90 percent after being temporarily halted in extended-hours trading. (Click here for after-hours quote.)

Express Scripts - The pharmacy benefit manager posted earnings of 73 cents a share, excluding one-time items, missing expectations for 77 cents a share. In addition, the company handed in a full-year profit that came in one the lower end of Wall Street's target, pushing shares lower in extended hours trading. (Click here for after-hours quote.)

Cigna - The health insurer said it will acquire American Financial Group's Great American Supplemental Benefits Group, a distributor and marketer of supplemental health insurance products, in a deal worth almost $295 million. (Click here for after-hours quote.)

Molycorp - The mining company posted earnings of 18 cents a share, excluding one-time items, beating expectations for 13 cents a share. But revenue came in at $84.5 million, missing estimates for $116 million, pushing shares lower in extended-hours trading. (Click here for after-hours quote.)

Nuance Comm. - The IT software firm posted earnings of 43 cents a share, excluding one-time items, on revenue of $418 million, edging past expectations for 41 cents a share on sales of $413 million. Shares edged higher in extended-hours trading. (Click here for after-hours quote.)

McDermott International - The engineering company reported earnings of 26 cents a share, easily beating expectations for 15 cents a share. Still, revenue was slightly lighter than expected. Shares jumped in extended-hours trading. (Click here for after-hour quote.)

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