PJT Partners, Inc. is a global advisory-focused investment bank, founded in October 2015 as part of The Blackstone Group's spin-off of its financial and strategic advisory services businesses. PJT operates businesses across strategic advisory, strategic capital markets, restructuring, shareholder advisory and capital raising. The firm has advised on over $600 billion in M&A transactions including AbbVie's $63 billionn acquisition of Allergan, T-Mobile's $59 billion merger with Sprint, and Mylan's $50 billion merger with Pfizer subsidiary, Upjohn. The firm is headquartered in New York City, with additional offices in Boston, Chicago, Hong Kong, Houston, London, Los Angeles, Madrid, San Francisco and Sydney, and employs approximately 700 people. Wikipedia