CHICAGO, May 21 (Reuters) - Standard & Poor's said onThursday that Western Digital Corp (WDC.N), a maker of harddrives, will replace Embarq Corp EQ.N in its flagship S&P 500.SPX index after the close of trading on a date to beannounced. Stocks Embarq is being acquired by CenturyTel Inc (CTL.N), whichis also in the index. The shares of companies joining the S&P 500 often risebecause many investors try to track the index and are requiredto buy shares of companies that join it. Western Digital shares rose $1.15 to $25.51 in after-hourstrading within minutes of the S&P announcement They had risen22 cents in regular trading.

The company is based in LakeForest, California.(Reporting by Jonathan Stempel; Editing by Andre Grenon) Stocks. NEW YORK (Reuters) - Shares of OpenTable Inc (OPEN.O) closed their first trading session up 59 percent on Thursday following the restaurant reservation company's initial public offering, in the best first day performance for a U.S company in over 18 months. Deals  |  Asian Markets  |  FranceThe stock ended up $11.89 at $31.85 on Nasdaq, a day after the company raised a more-than-expected $60 million in its IPO. If it continues to earn at the pace it achieved in the first quarter, the price-to-earnings ratio for 2009 would be around 420 at current prices.That compares with a prospective price-to-earnings ratio for 2009 of 47 at WebMD Health (WBMD.O)."This is reminiscent of the 1999-2000 IPO pricings," said Scott Sweet, a senior managing partner with advisory firm IPO Boutique, in a research note."This IPO environment has not and should not see a pricing like what was chosen, considering the restaurant business is very prone to the recession."Still, analysts caution that comparisons are difficult given OpenTable's lack of direct competitors. In addition, it has also managed to see sales grow despite the recession."Once the economy levels and starts to grow again, then OpenTable's growth rate should pick up. In the climate of restaurant closings, it's surprising it generated five quarters of sequential growth," said Francis Gaskins, president of IPO Desktop. OpenTable's revenue rose 35.7 percent in 2008.Gaskins called OpenTable's jump "over the top."The IPO is the first by a U.S.

IPO in a row to see its shares jump on their first day of trading, and the seventh on a U.S. exchange in 2009.With a jump of 59 percent, OpenTable had the best first day performance since American Public Education Inc (APEI.O) rose 67.3 percent in its debut in November 2007.(Reporting by Phil Wahba; Editing by John Wallace, Phil Berlowitz, Bernard Orr, Richard Chang) Deals Asian Markets France. Massive Racketeering Case Targets Hawaiian Gardens Gang Involved in Murder ofSheriff's Deputy, Attacks On African-Americans and Widespread Drug Trafficking88 Arrested Today as Part of Largest Federal Gang Prosecution in U.S. Additional arrests are expected in this case."'Operation Knock Out' has led to federal indictments against 147 gangmembers, making it the largest gang sweep in U.S history," said United StatesAttorney Thomas P. O'Brien."More than 50 members and associates of theHawaiian Gardens gang are charged with violating the federal RICO statute --the same law that we used to knock out the mafia and which we have used withgreat success in Southern California in recent years to dismantle othercriminal gangs."LASD Assistant Sheriff Paul Tanaka stated, "Jerry Ortiz was an outstandingdeputy sheriff and a good family man who was murdered by a cowardly HawaiianGardens gang member.The senseless murder of Deputy Ortiz brought new-foundattention to the fact that this multi-generational gang had been terrorizingneighborhoods, running drugs, and committing violent crimes for many years. The primary purpose of 'Operation Knock Out' was to make the community a saferplace for all those who had suffered under the oppressive reign of this gang.