Shares of the following companies had unusual moves in U.S. trading. Stock symbols are in parentheses and prices are as of 4 p.m. in New York.
Blackboard Inc. (BBBB US) gained 7.8 percent, the most since April 19, to $43.94. The maker of software used by colleges to put lectures online is in exclusive talks with Providence Equity Partners, according to a Wall Street Journal report citing people familiar with the matter. The acquisition may happen next week, the Journal said.
Brocade Communications Systems Inc. (BRCD US) slipped 7.2 percent, the most since Nov. 23, to $6.19. The biggest maker of switches for data-storage networks said Chief Financial Officer Richard Deranleau left the company to pursue other interests. Dan Fairfax, vice president of Global services, will succeed him, the company said.
Discover Financial Services (DFS US) rose the most in the Standard & Poor’s 500 Index, climbing 3.8 percent to $24.79. The credit-card issuer and payments network had its 2011 earnings estimate increased by Sterne Agee Group Inc. after the company’s second-quarter profit beat analysts’ estimates.
Eastman Kodak Co. (EK US) dropped 4.2 percent, the most since May 27, to $3.42. A final ruling scheduled for today in the photography company’s patent-infringement case against Apple Inc. (AAPL US) and Research In Motion Ltd. (RIMM US) was pushed back one week by the U.S. International Trade Commission.
Finish Line Inc. (FINL US) declined 7.9 percent, the most since Sept. 24, to $21.34. The athletic apparel retailer said revenue for the first quarter was $299 million, missing the average analyst estimate of $301 million in a Bloomberg survey.
Micron Technology Inc. (MU US) fell 15 percent to $7.20 for the biggest retreat in the S&P 500. The largest U.S. maker of computer-memory chips posted net income of 7 cents a share, missing the average analyst projection of 18 cents a share from a Bloomberg survey.
SanDisk Corp. (SNDK US), a maker of flash-memory cards, lost 9.2 percent to $38.94.
Oracle Corp. (ORCL US) retreated 4.1 percent, the most since May 2010, to $31.14. The world’s top supplier of database software posted a 6 percent drop in hardware sales. The company had forecast in March an increase of 6 percent to 12 percent.
Pain Therapeutics, Inc. (PTIE US) plunged 43 percent to $5.30 for the biggest decline in the Russell 2000 Index. The U.S. Food and Drug Administration delayed approval of a new type of painkiller the Austin, Texas-based company developed with Pfizer Inc. (PFE US) and Durect Corp. (DRRX US) that’s designed to curb abuse. The regulators’ concerns about the medicine, a long-acting oxycodone pill called Remoxy, weren’t specified by Pfizer and Pain Therapeutics. Durect fell 31 percent to $2.13.
Acura Pharmaceuticals Inc. (ACUR US) surged 9.9 percent to $4.10. The FDA approved Acura’s painkiller Oxecta, a joint venture between the maker of technology to deter drug abuse and Pfizer, earlier this week.
PGT Inc. (PGTI US) rose 7.2 percent, the most since December, to $1.94. The maker of residential impact-resistant windows and doors entered into a credit agreement with General Electric Capital Corp. to receive a $15 million revolving credit line, a $48 million term loan and an uncommitted incremental facility worth up to $25 million.
Southern Union Co. (SUG US) surged 17 percent to $39.85 for the biggest increase in the Russell 1000 Index. Williams Cos. (WMB US) offered $39 a share, or $4.86 billion in cash, for natural gas pipeline company, topping a June 16 bid by Energy Transfer Equity LP (ETE US).
Energy Transfer slid 5.5 percent to $43.06.
STR Holdings Inc. (STRI US) fell 14 percent to $14.33, the lowest price since December 2009. The solar-panel parts maker lowered its second-quarter forecast to 30 cents to 32 cents a share from the previous estimate of 38 cents to 42 cents a share.
Synovus Financial Corp. (SNV US) dropped 2.8 percent to $2.10 and slid as low as $2.07, below its lowest closing price since Nov. 30. Wunderlich Securities analyst Kevin Reynolds downgraded the Georgia Bank to “hold” from “buy” and lowered the 18-month share-price estimate to $2.50 from $3.50, citing a constrained earnings power.
United Continental Holdings Inc. (UAL US) declined 8.6 percent to $22.99 and lost as much as 10 percent, the most intraday since Feb. 23. The airline holding company posted an increase of 4 percent in revenue per available seat mile this month, short of Barclays Plc’s estimate of 11 percent gain, analyst Gary Chase wrote in a note to clients.
Other carriers also fell. Delta Air Lines Inc. (DAL US) dropped 5.1 percent to $9.43. AMR Corp. (AMR US) fell 6.8 percent to $5.64.