The Russell 2000 Index had the steepest gain in more than five years, rising 4.8 percent to 681.93. The Standard & Poor's 500 Index, whose members have a median market value 22 times larger than the Russell 2000, added 4.2 percent for the biggest advance since October 2002. The measures have declined 11 percent and 9.4 percent, respectively, this year.
Allscripts Healthcare Solutions Inc. (MDRX US) rallied the most since August 2006, jumping 11 percent to $9.75. The software maker agreed to be bought by Misys Plc (MSY LN), the U.K.'s third-biggest software maker, for $330 million in cash.
Dynavax Technologies Corp. (DVAX US) slumped 59 percent, the most since its February 2004 initial offering, to $2.16. The biotechnology company developing products for infectious disease said U.S. regulators delayed two proposed clinical trials of an experimental Hepatitis B vaccine because of a side effect in a patient who took the medicine outside the country.
Excel Maritime Carriers Ltd. (EXM US) gained 17 percent to $28.93, the biggest gain since Nov. 28. The commodities shipper said fourth-quarter profit more than tripled to $1.71 a share on higher rates for shipments of iron ore and coal. The average of estimates by six analysts compiled by Bloomberg was $1.48 a share.
Quintana Maritime Ltd. (QMAR US), another commodities shipper, advanced 11 percent to $22.10.
FactSet Research Systems Inc. (FDS US) rose the most since September 2005, jumping 18 percent to $52.43. The provider of financial data to investment managers and banks forecast revenue of at least $145 million in the third quarter. That exceeded the average estimate of $143.6 million from analysts in a Bloomberg survey.
FCStone Group Inc. (FCSX US) climbed the most since its March 2007 initial public offering, gaining 45 percent to $31. The Kansas City, Missouri-based provider of commodity risk-management services said it has no direct involvement with sub-prime mortgage-backed or auction-rate securities.
Getty Realty Corp. (GTY US) slumped the most since December 1980, dropping 43 percent to $15.41. The company, which owns gas stations and convenience stores, amended its fourth-quarter results because of concern that its primary tenant, Getty Petroleum Marketing Inc., might fall short on rent payments.
Oceaneering International Inc. (OII US) rose 5.5 percent to $61.46, the highest price since March 5. The Houston-based offshore oilfield-service company said it acquired GTO Subsea AS, based in Kristiansund, Norway, for $45 million to add dredging capabilities.
Shuffle Master Inc. (SHFL US) fell the most since its December 1992 initial public offering, sliding 26 percent to $5.32. The maker of casino roulette-chip sorters and card shufflers said that, excluding some costs, it had a loss of 1 cent a share from continuing operations excluding costs in the first quarter. The average estimate from analysts was for profit of 8 cents, according to a Bloomberg survey.
Somanetics Corp. (SMTS US) plunged the most since May 1997, losing 26 percent to $13.38. The maker of medical monitoring systems said its full-year revenue may miss its earlier prediction of $50 million.
Sunrise Senior Living Inc. (SRZ US) fell the most since May 2006, declining 15 percent to $19.59. The manager of retirement communities missed a New York Stock Exchange deadline to file its annual report. The company also said it adopted changes to its financial reporting procedures after an internal investigation found accounting errors.
Ultrapetrol Bahamas Ltd. (ULTR US) had the biggest gain since its October 2006 initial public offering, climbing 24 percent to $9.08. The shipper of bulk cargo on South American rivers said it plans to buy back as much as $50 million of its stock.
Xerium Technologies Inc. (XRM US) tumbled the most since its May 2005 initial public offering, falling 74 percent to $1.15. The North Carolina maker of products for paper production canceled its dividend and said it may file for bankruptcy.