Anbang Insurance, besides having bough a majority stake in Vancouver's Bentall Towers complex also purchased Retirement Concepts from Jamal family, wealthy members of B.C.’s tightly knit Ismaili community. Good deal for all concerned, I am sure. To invest S400 million in Manhattan therefore is not a very large sum of money, when one looks at other developers, like Related Companies - No. 1 with at least 15,521 apartments, predominantly in Manhattan and the Bronx. The LeFrak Organization came in second with at least 12,532 units, the bulk of which come from the eponymously named LeFrak City in Queens. Private equity giant Blackstone Group took the No. 3 spot with at least 12,189 apartments in New York. Cammeby’s International,  the fourth-largest landlord, with at least 11,774 apartments. And A&E Real Estate Holdings came in fifth. Its 8,832 units were mostly acquired in the span of just five years..