The portfolio acquisition comes amid a flurry of warehouse deals. Blackstone, the world's biggest alternative asset manager, has made both purchases and sales in the sector, including the $7.6-billion takeover of Gramercy Property Trust in October. Also last year, Blackstone acquired Canyon Industrial Portfolio's last-mile properties for $1.8 billion, Canada's Pure Industrial Real Estate Trust for about $2.6 billion and more than 100 warehouse assets from Harvard University's endowment for $950 million.