The following is an abbreviated version of the apartment management portion of the 2010 NMHC 50, an annual ranking of the 50 largest U.S. apartment owners and managers published in NREI's April issue. The companies below are ranked according to the number of apartment units they managed as of Jan. 1, 2010.

1. Pinnacle
   Apartments Managed: 183,877
   Seattle, WA
   Corporate Officer: Stan Harrelson

2. Riverstone Residential Group
   Apartments Managed: 178,431
   Dallas, TX
   Corporate Officer: Walt Smith

3. Greystar Real Estate Partners
   Charleston, SC
   Apartments Managed: 153,819
   Corporate Officer: Robert Faith

4. Equity Residential
   Chicago, IL
   Apartments Managed: 136,843
   Corporate Officer: David J. Neithercut

5. Lincoln Property Co.
   Dallas, TX
   Apartments Managed: 132,881
   Corporate Officer: Tim Byrne

6. AIMCO
   Denver, CO
   Apartments Managed: 129,715
   Corporate Officer: Terry Considine

7. Archstone
   Apartments Managed: 83,085
   Englewood, CO
   Corporate Officer: R. Scot Sellers

8. WinnCompanies
   Apartments Managed: 73,302
   Boston, MA
   Corporate Officer: Samuel Ross

9. Camden Property Trust
   Apartments Managed: 63,506
   Houston, TX
   Corporate Officer: Richard J. Campo

10. Bell Partners
    Apartments Managed: 60,422
    Greensboro, NC
    Corporate Officer: Steven D. Bell

11. FPI Management
    Apartments Managed: 56,952
    Folsom, CA
    Corporate Officer: Dennis Treadaway

12. Fairfield Residential
    Apartments Managed: 55,054
    San Diego, CA
    Corporate Officer: Chris Hashioka

13. Edward Rose & Sons
    Apartments Managed: 53,667
    Farmington Hills, MI
    Corporate Officer: Warren Rose

14. UDR
    Apartments Managed: 51,342
    Highlands Ranch, CO
    Corporate Officer: Thomas W. Toomey

15. Alliance Residential Co.
    Apartments Managed: 49,488
    Phoenix, AZ
    Corporate Officer: Bruce Ward

16. AvalonBay Communities
    Apartments Managed: 48,924
    Alexandria, VA
    Corporate Officer: Bryce Blair

17. Westdale Real Estate Investment & Management
    Apartments Managed: 46,682
    Dallas, TX
    Corporate Officer: Joseph G. Beard

18. The ConAm Group of Cos.
    Apartments Managed: 46,100
    San Diego, CA
    Corporate Officer: Brad Forrester

19. Picerne Real Estate Group
    Apartments Managed: 44,927
    Phoenix, AZ
    Corporate Officer: David R. Picerne

20. Mid-America Apartment Communities
    Apartments Managed: 43,604
    Memphis, TN
    Corporate Officer: H. Eric Bolton, Jr.

21. BH Management Services
    Apartments Managed: 41,366
    Des Moines, IA
    Corporate Officer: Harry Bookey

22. Empire American Holdings
    Apartments Managed: 40,776
    Montvale, NJ
    Corporate Officer: Eli Feller

23. Milestone Management LP
    Apartments Managed: 40,092
    Dallas, TX
    Corporate Officer: Steve Lamberti

24. The Michaels Development Co.
    Apartments Managed: 38,236
    Marlton, NJ
    Corporate Officer: Robert J. Greer

25. Gables Residential
    Apartments Managed: 37,842
    Atlanta, GA
    Corporate Officer: David D. Fitch