Equity Residential
Private
SectorReal Estate
CountryUnited States
Equity Residential,"A publicly traded real estate investment trust (REIT) that owns and operates luxury apartment properties in high-growth urban markets."
You can't buy this directly — but you can invest in the public parent:
Vivmark Residential, Inc.
VMRK
Publicly traded alternatives in this space:
Array
Equity LifeStyle Properties
Welltower Inc. 
Prologis, Inc. 
Equinix, Inc. 
American Tower Corporation 
Simon Property Group, Inc. 
Digital Realty Trust, Inc.