EQT Corp. (NYSE:EQT) +3.7% pre-market Monday after saying asset manager Blackstone (BX) agreed to acquire non-controlling equity interests in some of its natural gas pipelines for $3.5B in cash. EQT (EQT) and Blackstone (BX) will form a new midstream joint venture consisting of EQT's ownership interest in the Mountain Valley pipeline,

EQT shares rose after the natural gas producer said Blackstone’s credit and insurance business is buying a $3.5 billion stake in its midstream assets through a joint venture.

EQT, a US-based natural gas producer, has announced a midstream JV with Blackstone Credit & Insurance (BXCI), a unit of investment major Blackstone. The JV includes EQT's interests in key infrastructure assets such as the Mountain Valley Pipeline (MVP), transmission and storage facilities, as well as the Hammerhead Pipeline.