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.
Regional banks advanced as RBC Capital Markets boosted Fifth Third Bancorp (FITB US) to “outperform” from “sector perform” while Wunderlich Securities Inc. said First Horizon National Corp. (FHN US) is “attractively priced for value investors, as well as other banks seeking to acquire a dominant franchise in Tennessee.”
Fifth Third added 4.2 percent to $10.35. First Horizon rose 1.8 percent to $6.24. Comerica Inc. (CMA US) climbed 5.3 percent to $23.79.
Aetna Inc. (AET US) gained 5.4 percent to $40.53, the highest price since July 29. The insurer said it expected to beat its full-year profit forecast of $4.60 to $4.70 a share.
Best Buy Co. (BBY US) fell the most in the Standard & Poor’s 500 Index, sliding 6.5 percent to $23.35. The world’s largest consumer electronics retailer reported second-quarter profit that missed analysts’ estimates and cut its full-year earnings forecast as sales of televisions and mobile phones declined.
Cummins Inc. (CMI US) rose 5.9 percent to $92.20 for the biggest advance in the S&P 500. The maker of diesel engines said it expects sales to reach $30 billion by 2015, and said 2011 will be a “record year” for the company.
InterMune Inc. (ITMN US) fell 9.9 percent, the most since Aug. 8, to $24.20. The maker of a drug for a rare lung disease said it plans to offer 4 million shares and $100 million of convertible debt.
Paramount Gold and Silver Corp. (PZG US) surged 22 percent, the most in the Russell 2000 Index, to $2.91. The mining company that explores in Mexico and the U.S. said a resource estimate test of its Sleeper Gold Project in Nevada indicated it “could sustain a low cost mining operation.”
QR Energy LP (QRE US) rallied 11 percent, the most intraday since it went public in December, to $19.66. The owner of oil and gas properties was boosted to “outperform” from “neutral” at Robert W. Baird & Co.
Silvercorp Metals Inc. (SVM US) dropped 20 percent, the most since September 2004, to $6.30. Carson Block’s Muddy Waters LLC said it’s shorting the Chinese silver miner accused of accounting fraud in an anonymous letter last month. Muddy Waters in June alleged overstated holdings by Sino-Forest Corp. (TRE CN), another Chinese company traded in North America.
SolarWinds Inc. (SWI US) declined 6.5 percent, the most since July 2010, to $22.04. The provider of network management software was cut to “equalweight” from “overweight” at Morgan Stanley.
SunPower Corp. (SPWRB US) rallied 12 percent, the most since April 29, to $11.23. The solar-cell manufacturer urged shareholders to approve a proposal to reclassify all its outstanding A and B stock into a single class on a one-for-one basis. Auriga Securities raised the stock’s rating to “buy” from “hold.”
US Airways Group Inc. (LCC US) climbed 16 percent, the most since Aug. 9, to $5.64. The carrier’s demand environment has been “very robust” since mid-July, President Scott Kirby said at a conference.