|Company||Market Cap (USD)|
|Equity Residential||$23.13 B|
|AvalonBay Communities, Inc.||$22.59 B|
|UDR, Inc.||$20.55 B|
|Sun Communities, Inc.||$18.44 B|
|Mid-America Apartment Communities, Inc.||$18.16 B|
The market capitalization of a company, more simply referred to as "market cap", is the total market value of a publicly traded company's outstanding shares. It is often considered as a key indicator of what a company is worth.