French PE investor Ardian , founded 25 years ago,manages funds over 100 billion USD & is one of the leading PE investment firm in Europe. It manages various funds ,real estate & fund of funds.It also manages airports as well as holds & runs a portfolio of 150 companies. Expleo is one of them.
Therefore I presume, that Ardian has done due diligence & Risk Rewad Ratio , before buying out SQS Germany & creating the Expleo brand umbrella