Investment giant Blackstone has acquired a majority stake in HCA Healthcare subsidiary CoreTrust.

CoreTrust is a bulk purchaser that started within HealthTrust, a supply arm for HCA. HealthTrust will continue to hold a minority stake in CoreTrust, according to Bloomberg. CoreTrust negotiates a group discount for a range of company purchases.

The terms of the deal were not released.

Earlier this year, Blackstone bought a Midtown Nashville property for $48 million, and in December paid an apparent record price of $99.6 million for a downtown building home to a Courtyard Marriott.