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Constellation, Lam Research, TPC Group: U.S. Equity Movers

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.

Allscripts Healthcare Solutions Inc. (MDRX US) fell the most in the Russell 1000 Index, sliding 6.8 percent $20.96. The software maker was cut to “hold” from “buy” at Auriga USA LLC.

Bed Bath & Beyond Inc. (BBBY US) gained 10 percent to $54.55 for the biggest rally in the Standard and Poor’s 500 Index. The home furnishings retailer forecast annual earnings of $3.38 to $3.53 a share. That compares with the average analyst projection of $3.33, Bloomberg data show.

Buckle Inc. (BKE US) rose 9.9 percent to $44.55, the highest price since 1992. The teen retailer reported March sales at stores open at least one year increased 8.4 percent from a year earlier. Analysts expected a decline of 1.2 percent.

Constellation Brands Inc. (STZ US) rose 6.9 percent to $21.79 for the second-biggest gain in the S&P 500. The world’s largest wine company said that, excluding some items, it expects to earn at least $1.90 a share in fiscal 2012. That beat the average estimate of $1.89 from analysts in a Bloomberg survey.

Costco Wholesale Corp. (COST US) rose 3.8 percent to $77.82, the third-biggest increase in the S&P 500. The largest U.S. warehouse-club chain reported total comparable sales rose 13 percent in March, beating the 7.4 percent estimate.

Immucor Inc. (BLUD US) climbed 4.7 percent, the most since Jan. 7, to $20.92. The maker of products used to screen donated blood reported third-quarter earnings of 32 cents a share, beating the average analyst projection of 26 cents a share, according to data compiled by Bloomberg.

Immunogen Inc. (IMGN US) advanced 27 percent, the most since July 2003, to $11.80. The Waltham, Massachusetts-based drugmaker said that patients treated with T-DM1, which consists of the company’s DM1 cancer cell-killing agent, had a significant improvement in “progression-free survival.”

Lam Research Corp. (LRCX US) had the second-biggest decline in the Russell 1000 Index, dropping 5 percent to $53.52. The maker of chip-manufacturing equipment may disappoint investors when reporting earnings for the current quarter as demand slows, Citigroup Inc. wrote in a note, in which it added the idea of selling the shares its Top Picks Live! list.

KLA-Tencor Corp. (KLAC US), another semiconductor-equipment maker, declined 4.6 percent to $44.06 for the biggest retreat in the S&P 500.

Movado Group Inc. (MOV US) climbed 12 percent to $16.81, the highest price since October 2008. The watch and jewelry maker reported fourth-quarter earnings that beat analysts’ estimates and said it will resume paying dividends.

Pier 1 Imports Inc. (PIR US) rose 11 percent to $11.65, the highest price since April 2006. The home-furnishings retailer reported fourth-quarter earnings of 48 cents a share, beating the average analyst estimate by 1 cent.

Ruby Tuesday Inc. (RT US) slumped 18 percent, the most since December 2008, to $10.92. The casual-dining chain cut its 2011 earnings forecast to a range of 74 cents to 82 cents a share, from 76 cents to 87 cents a share. That’s below the average analyst projection of 91 cents a share.

TPC Group Inc. (TPCG US) jumped 13 percent to $36.71, the highest price since 2004. The maker of petrochemical-derived products had its share-price estimate increased to $42 from $39 at Oppenheimer & Co.

WD-40 Co. (WDFC US) fell 6.3 percent, the most since Jan. 11, to $40.90. The San Diego-based maker of lubricants and hand soap cut its 2011 earnings forecast to a range from $2.23 to $2.35 a share, from $2.25 to $2.40 share. The average analyst forecast was $2.31 a share, Bloomberg data show.

XenoPort Inc. (XNPT US) rallied 56 percent to $9.96 for the biggest gain in the Russell 2000 Index. The drugmaker and GlaxoSmithKline Plc (GSK LN) won U.S. approval for a new treatment for restless legs syndrome after more than a year of delays.

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