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.
Constellation Brands Inc. (STZ US) increased 4.3 percent to $18.52 for the second-biggest gain in the Standard & Poor’s 500 Index. The world’s largest winemaker said it had second-quarter profit of 52 cents a share excluding some items, beating the 49 cent average estimate of analysts surveyed by Bloomberg.
Diamond Foods Inc. (DMND US) fell 4.1 percent, the most since Aug. 25, to $40.72. The nut processor and distributor said 2011 profit excluding some items may be as low as $2.38 a share, compared with the average analyst estimate of $2.45 a share.
DuPont Fabros Technology Inc. (DFT US) declined 5.3 percent, the most since July 16, to $24.69. The technology company whose customers include Google Inc. and Microsoft Corp. said third quarter profit may be as low as 33 cents a share, compared with the average analyst estimate of 36 cents in a Bloomberg survey.
Equinix Inc. (EQIX US) dropped the most in the Russell 1000 Index, slumping 33 percent to $70.34. The operator of Internet data centers said third-quarter sales were no more than $330 million, compared with the average analyst estimate of $336.6 million.
Among Equinix’s competitors, Savvis Inc. (SVVS US) fell 10 percent to $19.39, while Rackspace Hosting Inc. (RAX US) slid 11 percent to $23.29.
Other technology stocks also fell. Citrix Systems Inc. (CTXS US) dropped 14 percent to $60.15. Akamai Technologies Inc. (AKAM US) retreated 7.6 percent to $44.25.
First Horizon National Corp. (FHN US) rose 1.8 percent to $11.62, the highest price since Aug. 2. Tennessee’s biggest bank was raised to “buy” from “hold” at Deutsche Bank AG.
F5 Networks Inc. (FFIV US) tumbled 13 percent, the most since October 2007, to $97.54. The maker of software to handle Internet traffic and content was cut to “neutral” from “buy” at Gleacher & Company, with a 12-month share price estimate of $115.
Massey Energy Co. (MEE US) rose the most in the S&P 500, climbing 6.1 percent to $33.82. The coal producer was rated “buy” in new coverage by Brean Murray & Co.
M&T Bank Corp. (MTB US) slipped 5 percent to $78.91, the lowest price since June 14. Allied Irish Banks Plc said it will start selling its 22.4 percent stake in the Buffalo, New York- based lender, valued at $2.2 billion, in a U.S. public offering.
Maidenform Brands Inc. (MFB US) declined 8 percent, the most since March 2009, to $26.37. The maker of women’s undergarments was cut to “hold” from “buy” at BB&T Corp.
OGE Energy Corp. (OGE US) gained 4 percent to $42.55, the highest price since at least July 1980. The owner of Oklahoma’s electric and gas utility and ArcLight Capital Partners LLC said they agreed for an ArcLight affiliate to acquire a 9.9 percent equity ownership stake in Enogex, OGE Energy’s midstream natural gas pipeline subsidiary.
OSI Systems Inc. (OSIS US) retreated 5.9 percent to $34.64. The maker of gear to scan carry-on luggage was cut to “hold” from “buy” at Benchmark Co.
PMI Group Inc. (PMI US) rose 6 percent to $3.89, the highest price since June 18. Leon Cooperman, founder of hedge fund Omega Advisors Inc., disclosed a 5.3 percent stake in the mortgage insurer.
Polycom Inc. (PLCM US) rose 5.1 percent, the most since April 14, to $27.17. The largest independent maker of videoconferencing systems will at least meet its own sales forecast for the third quarter, William Blair & Co. wrote in a note to clients, citing industry and reseller checks.
T-3 Energy Services Inc. (TTES US) jumped 10 percent, the most since November 2009, to $29.98. The provider of oilfield products and services and Robbins & Myers Inc. (RBN US), a maker of fluid management systems, said their boards of directors unanimously approved an agreement for Robbins & Myers to acquire T-3 for about $422 million in stock and cash. Robbins & Myers fell 5.2 percent to $25.29.
Team Inc. (TISI US) advanced 5.4 percent to $18.87, the highest price since March 5. The provider of industrial services posted first-quarter earnings excluding some items of 20 cents a share, beating the average analyst estimate by 43 percent, according to Bloomberg data.
TeleCommunication Systems Inc. (TSYS US) surged 31 percent to $4.89 for the second-biggest gain in the Russell 2000 Index. The maker of satellite systems said it won a $269 million contract from the U.S. Marine Corps.
Tibco Software Inc. (TIBX US) fell 5.1 percent, the most since May 20, to $17.18. The software company was cut to “neutral” from “buy” at Longbow Research.
Wilmington Trust Corp. (WL US) dropped 12 percent to $7.71, the lowest price since March 2009. The Delaware bank founded by the du Pont family is seeking a capital infusion from private-equity firms, four people with knowledge of the matter said.