The private equity giant is in talks with prospective buyers, including Prologis. : (Bloomberg)—Blackstone Group LP is talking with prospective buyers for some of the warehouses it will amass as part of an $18.7 billion acquisition agreed to last month with GLP Pte Ltd., according to people with knowledge of the matter. The investment firm has solicited interest for bespoke portfolios of properties from suitors including Prologis Inc., said some of the people, who asked not to be identified because the discussions are private. At least one portfolio is valued at $1 billion or more, one of the people said.