InvestmentsTop Global NewsMarketsReal Estate Blackstone, Bill Gates’ Cascade join hands for Signature Aviation bid By financialnews_rlv83x - January 8, 2021 0 59 Blackstone Group Inc on Friday pushed ahead with its proposal to buy out Signature Aviation in a deal worth US$4.29 billion, securing the support of the private jet servicing company’s biggest shareholder Bill Gates’ Cascade Investment.