Shares of casino-hotel and resort operator Las Vegas Sands (LVS) - Get Report gained on Friday after S&P Dow Jones announced the company would be included in the S&P 500 index. 

Las Vegas Sands' stock gained 4.78%, or $2.67 a share, to $58.55 in morning trading after S&P Dow Jones said it will replace Nektar Therapeutics (NKTR) - Get Report in the S&P 500. Las Vegas Sands' move to the S&P 500 will take place prior to the start of trading on Oct. 3.

Nektar Therapeutics, meantime, will replace Sotheby's (BID) - Get Report in the S&P MidCap 400. Sotheby's is being acquired by BidFair USA and in turn taken private as of early next month.

Las Vegas Sands is also the parent of Macau licensee Sands China Ltd., and is also pursuing a casino license in Japan.

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