CompaniesBlackstone Buys Majority Stake in Spanx, Valuing It at $1.2 BillionSavePrintThe ticker and trading information for Blackstone Group is displayed on the floor of the New York Stock Exchange on April 4, 2016. Brendan McDermid/ReutersReuters10/20/2021|Updated: 10/20/2021Investment firm Blackstone Inc. would buy a majority stake in Spanx, valuing the shapewear maker at $1.2 billion, the companies said on Wednesday.The deal will allow Spanx to further expand globally and help it strengthen its online business, they added.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.