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.
A123 Systems Inc. (AONE US) slid 9.8 percent to $4.15. The lithium-ion battery maker was cut to “neutral” from “buy” at Goldman Sachs Group Inc.
Air Lease Corp. (AL US) rose 5.9 percent, the most intraday since it went public in April, to $22.56. The aircraft-leasing company reported second-quarter earnings of 8 cents a share, beating analyst estimates of 6 cents a share, Bloomberg data show.
Bally Technologies Inc. (BYI US) plunged 14 percent, the most since September 2008, to $30.22. The gaming-technology company was cut to “neutral” from “overweight” at JPMorgan Chase & Co., which said Bally’s forecast for 2012 “will be viewed as disappointing by investors.”
Clearwire Corp. (CLWR US) rose the most in the Russell 1000 Index, rallying 20 percent to $1.91. The money-losing wireless broadband provider rose for a second day after the Wall Street Journal reported that the company may receive additional funding from Sprint Nextel Corp. (S US)
DeVry Inc. (DV US) fell the most in the Standard & Poor’s 500 Index, sinking 17 percent to $44.49. The owner of for-profit colleges said total undergraduate enrollment and new undergraduate enrollment fell last quarter.
ITT Educational Services Inc. (ESI US), another for-profit college owner, declined 2.3 percent to $74.25.
Dillard’s Inc. (DDS US) slid 18 percent, the most since October 2008, to $41.51. The Arkansas-based department-store chain said second-quarter earnings were 30 cents a share, excluding some items, missing the 39 cent average estimate of two analysts, Bloomberg data show.
F5 Networks Inc. (FFIV US) rose 7.6 percent, the most since Oct. 27, to $81.90. The software maker was boosted to “outperform” from “market perform” at William Blair & Co., which said the stock is “too inexpensive to pass up.”
Goodyear Tire & Rubber Co. (GT US) rose 7.9 percent to $13.48, the highest price in a week. The largest U.S. tiremaker won $1.50 million federal funding to develop fuel efficient tires, Senator Sherrod Brown of Ohio said in a statement.
Hewlett-Packard Co. (HPQ US) gained 4.1 percent to $32.32 for the second-biggest increase in the Dow Jones Industrial Average. The world’s largest maker of personal computers has cut prices of TouchPad tablet computer by $100 one month after introducing the product, a move that may help the company compete with Apple Inc.’s (AAPL US) market-leading iPads.
MannKind Corp. (MNKD US) rose the most in the Russell 2000 Index, surging 18 percent to $2.79. The biotechnology company said it will proceed with two trials of its experimental inhaled insulin Afrezza.
Molycorp Inc. (MCP US) climbed 8.8 percent to $58.90, rising for a fourth day. The owner of the largest rare-earth deposit outside China raised its full-year production forecast and posted second-quarter profit that beat analysts’ estimates as mine sales volumes tripled.
Nordstrom Inc. (JWN US) rose 4.6 percent to $44.28, the highest price in a week. The U.S. department store chain posted second-quarter earnings that beat the average analyst estimate, data compiled by Bloomberg show.
TiVo Inc. (TIVO US) gained 5.2 percent to $8.05, the highest price since Aug. 5. The pioneer of digital-video recorders authorized as much as $100 million in stock buybacks over two years.