Blackstone and Airbnb stock prices rise as the companies join the S&P 500 index.

Blackstone and Airbnb stock prices rise as the companies join the S&P 500 index.

In extended trading on Friday, shares of Blackstone and Airbnb rose after S&P Dow Jones Indices announced that the two businesses would enter the S&P 500 index.

Following the S&P, Airbnb increased 5% and Blackstone gained 4.1%. Newell Brands Inc., and Lincoln National Corp., will be replaced, according to Dow Jones Indices, before trading begins on September 18.

Newell Brands held steady as Lincoln National fell by 0.7%.

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