Blackstone appoints real estate head Jon Gray as president, COO Photo: Bloomberg Melissa Mittelman February 14, 2018 PremiumBlackstone Group LP named Jon Gray as president and chief operating officer of the alternative asset manager. Continue reading this story with a subscription to DealStreetAsia. Subscribe Already a subscriber? Log in Should your colleagues be reading this article too? Contact us for corporate subscriptions at firstname.lastname@example.org.