Duff & Phelps Investment Management

Duff & Phelps Investment Management as of March 31, 2013

Portfolio Holdings for Duff & Phelps Investment Management

Duff & Phelps Investment Management holds 0 positions in its portfolio as reported in the March 2013 quarterly 13F filing

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                                                          FORM 13F INFORMATION TABLE
                                                           VALUE   SHARES/  SH/ PUT/ INVSTMT    OTHER          VOTING AUTHORITY
NAME OF ISSUER                 TITLE OF CLASS   CUSIP NO  (x$1000) PRN AMT  PRN CALL DSCRETN  MANAGERS    SOLE  SHARED     NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- --------- ------- ------- --------

3M Co                          Common Stock     88579Y101    1435    13495 SH       SOLE               13495
Abbott Laboratories            Common Stock     002824100    1184    33510 SH       SOLE               33510
Abbvie Inc.                    Common Stock     00287Y109    1372    33640 SH       SOLE               33640
Accenture Ltd                  Common Stock     G1151C101    1041    13700 SH       SOLE               13700
Access Midstream Partners LP   Master Ltd Part  00434L109   38113   944100 SH       SOLE              944100
Aflac Inc                      Common Stock     001055102    1281    24620 SH       SOLE               24620
Allete Inc                     Common Stock     018522300    3901    79575 SH       SOLE               79575
Alliant Energy Corp            Common Stock     018802108   75270  1500000 SH       SOLE             1500000
Allstate Corp                  Common Stock     020002101     499    10165 SH       SOLE               10165
Altria Group Inc               Common Stock     02209S103    1470    42755 SH       SOLE               42755
Amazon.Com Inc                 Common Stock     023135106    2061     7735 SH       SOLE                7735
American Campus Communities    REIT             024835100   32064   707198 SH       SOLE              703739              3459
American Electric Power        Common Stock     025537101     270     5555 SH       SOLE                5555
American Express Co            Common Stock     025816109    6110    90565 SH       SOLE               90565
American Tower REIT Inc        Common Stock     03027X100    5144    66880 SH       SOLE               66880
American Water Works Co        Common Stock     030420103   41440  1000000 SH       SOLE             1000000
Amgen Inc                      Common Stock     031162100    1630    15900 SH       SOLE               15900
Anadarko Petroleum Corp        Common Stock     032511107     930    10640 SH       SOLE               10640
Apache Corp                    Common Stock     037411105     643     8335 SH       SOLE                8335
Apple Computer Inc             Common Stock     037833100   13310    30070 SH       SOLE               30070
AT & T Inc.                    Common Stock     00206R102  114924  3132287 SH       SOLE             3132287
Atlas Pipeline Partner LP      Master Ltd Part  049392103    9406   272000 SH       SOLE              272000
Avalonbay Communities Inc      REIT             053484101   74991   592016 SH       SOLE              588954              3062
Avon Products                  Common Stock     054303102    1845    89015 SH       SOLE               89015
Baker Hughes Inc               Common Stock     057224107     435     9380 SH       SOLE                9380
Bank of America Corp           Common Stock     060505104    4240   348105 SH       SOLE              348105
Bank of New York Mellon Corp   Common Stock     064058100    2673    95486 SH       SOLE               95486
Baxter International Inc       Common Stock     071813109     845    11630 SH       SOLE               11630
BCE Inc                        Foreign Common   05534B760   46102   987417 SH       SOLE              987417
Berkshire Hathaway             Common Stock     084670702    4041    38778 SH       SOLE               38778
Biomed Realty Trust Inc        REIT             09063H107   30836  1427614 SH       SOLE             1420035              7579
Boeing Co                      Common Stock     097023105    1241    14460 SH       SOLE               14460
Boston Properties Inc          REIT             101121101   83405   825303 SH       SOLE              821055              4248
Bristol-Myers Squibb Co        Common Stock     110122108    1436    34855 SH       SOLE               34855
Buckeye Partners               Master Ltd Part  118230101   19002   310700 SH       SOLE              310700
Camden Property Trust          REIT             133131102   54832   798370 SH       SOLE              794380              3990
Capital One Financial Co       Common Stock     14040H105    4324    78690 SH       SOLE               78690
Caterpillar Inc                Common Stock     149123101    4919    56560 SH       SOLE               56560
Centerpoint Energy Inc         Common Stock     15189T107   76609  3197350 SH       SOLE             3197350
CenturyLink Inc                Common Stock     156700106   94148  2680000 SH       SOLE             2680000
Chevron Corp                   Common Stock     166764100    8388    70595 SH       SOLE               70595
Cisco Systems Inc              Common Stock     17275R102    5349   255810 SH       SOLE              255810
Citigroup Inc                  Common Stock     172967424    2859    64628 SH       SOLE               64628
CMS Energy Corp                Common Stock     125896100   73142  2617830 SH       SOLE             2617830
Coach Inc                      Common Stock     189754104    1897    37940 SH       SOLE               37940
Coca-Cola Co                   Common Stock     191216100    3296    81500 SH       SOLE               81500
Colgate-Palmolive Co           Common Stock     194162103    1106     9370 SH       SOLE                9370
Comcast Corp                   Common Stock     20030N101    2361    56195 SH       SOLE               56195
Conocophillips                 Common Stock     20825C104    3840    63891 SH       SOLE               63891
Consolidated Edison Inc        Common Stock     209115104    2530    41450 SH       SOLE               41450
Copano Energy LLC              Master Ltd Part  217202100   16766   413770 SH       SOLE              413770
Costco Wholesale Corp          Common Stock     22160K105     982     9255 SH       SOLE                9255
Crown Castle Intl Corp         Common Stock     228227104    6471    92925 SH       SOLE               92925
CVS Caremark Corp              Common Stock     126650100    1439    26175 SH       SOLE               26175
DCP Midstream Partners         Master Ltd Part  23311P100   20983   450184 SH       SOLE              450184
DCT Industrial                 REIT             233153105   51185  6916924 SH       SOLE             6882171             34753
DDR Corp                       REIT             23317H102   37647  2161118 SH       SOLE             2150160             10958
Devon Energy Corporation       Common Stock     25179M103     452     8020 SH       SOLE                8020
Digital Realty Trust Inc       REIT             253868103   24298   363138 SH       SOLE              361277              1861
Dominion Resources Inc         Common Stock     25746U109   85284  1465873 SH       SOLE             1465873
DOW Chemical Co                Common Stock     260543103     816    25620 SH       SOLE               25620
DTE Energy Co                  Common Stock     233331107   46085   674355 SH       SOLE              674355
DU Pont [E I] De Nemours       Common Stock     263534109    3281    66740 SH       SOLE               66740
Duke Energy Corp               Common Stock     26441C204   38569   531333 SH       SOLE              531333
EastGroup Properties           REIT             277276101   10409   178850 SH       SOLE              177950               900
eBay Inc                       Common Stock     278642103    1345    24810 SH       SOLE               24810
EL Paso Pipeline Partners LP   Master Ltd Part  283702108   24518   559000 SH       SOLE              559000
EMC Corp                       Common Stock     268648102    1069    44730 SH       SOLE               44730
Emerson Electric Co            Common Stock     291011104    5869   105045 SH       SOLE              105045
Enbridge Energy Partners       Master Ltd Part  29250R106   45507  1509861 SH       SOLE             1509861
Enbridge Inc                   Foreign Common   29250N105   90718  1949246 SH       SOLE             1949246
Energy Transfer Equity         Master Ltd Part  29273V100   20351   348000 SH       SOLE              348000
Energy Transfer Partners       Master Ltd Part  29273R109   22968   453100 SH       SOLE              453100
Entergy Corp                   Common Stock     29364G103   53754   850000 SH       SOLE              850000
Enterprise Prods Prtnrs        Master Ltd Part  293792107   47291   784400 SH       SOLE              784400
EQT Midstream Partners LP      Master Ltd Part  26885B100   12261   316000 SH       SOLE              316000
Equity Lifestyle Properties    REIT             29472R108   30198   393201 SH       SOLE              391143              2058
Equity Residential             REIT             29476L107  104829  1903903 SH       SOLE             1893946              9957
Essex Property Trust           REIT             297178105   53310   354030 SH       SOLE              352235              1795
Exelon Corp                    Common Stock     30161N101   34816  1009755 SH       SOLE             1009755
Extra Space Storage Inc        REIT             30225T102   68858  1753448 SH       SOLE             1744401              9047
Exxon Mobil Corp               Common Stock     30231G102   12894   143095 SH       SOLE              143095
Fedex Corp                     Common Stock     31428X106     601     6125 SH       SOLE                6125
Firstenergy Corp               Common Stock     337932107   53648  1271290 SH       SOLE             1271290
Ford Motor Co                  Common Stock     345370860    4288   326055 SH       SOLE              326055
Freeprt McMoran Cop and Gld    Common Stock     35671D857     669    20200 SH       SOLE               20200
Frontier Communications Corp   Common Stock     35906A108   33386  8388491 SH       SOLE             8388491
General Dynamics Corp          Common Stock     369550108     491     6960 SH       SOLE                6960
General Electric Co            Common Stock     369604103    7968   344628 SH       SOLE              344628
General Growth Pptys Inc       REIT             370023103   56894  2861855 SH       SOLE             2847378             14477
Genesis Energy LP              Master Ltd Part  371927104   27124   562500 SH       SOLE              562500
Gilead Sciences Inc            Common Stock     375558103    1584    32370 SH       SOLE               32370
Goldman Sachs Group Inc        Common Stock     38141G104    1378     9365 SH       SOLE                9365
Google Inc                     Common Stock     38259P508    4502     5670 SH       SOLE                5670
Great Plains Energy Inc        Common Stock     391164100   11595   500000 SH       SOLE              500000
Halliburton Co                 Common Stock     406216101    5129   126915 SH       SOLE              126915
HCP Inc                        REIT             40414L109   37992   761983 SH       SOLE              758187              3796
Health Care Reit Inc           REIT             42217K106   66708   982304 SH       SOLE              977224              5080
Heinz [H J] Co                 Common Stock     423074103     494     6830 SH       SOLE                6830
Hewlett-Packard Co             Common Stock     428236103     992    41625 SH       SOLE               41625
Home Depot Inc                 Common Stock     437076102    2219    31795 SH       SOLE               31795
Honeywell International Inc    Common Stock     438516106    1255    16650 SH       SOLE               16650
Host Hotels & Resorts Inc      REIT             44107P104   82453  4714322 SH       SOLE             4690105             24217
Illinois Tool Works            Common Stock     452308109    3626    59500 SH       SOLE               59500
Integrys Energy Group Inc      Common Stock     45822P105   34140   587000 SH       SOLE              587000
Intel Corp                     Common Stock     458140100    5780   264540 SH       SOLE              264540
Intl Business Machines Corp    Common Stock     459200101   11804    55340 SH       SOLE               55340
Intl Flavors & Fragrances      Common Stock     459506101    5951    77620 SH       SOLE               77620
iShares                        Exchange Traded  464287606    5615    43820 SH       SOLE               43820
iShares                        Exchange Traded  464287630    9928   118460 SH       SOLE              118460
iShares                        Exchange Traded  464287648    5400    50120 SH       SOLE               50120
iShares                        Exchange Traded  464287705   10433   103410 SH       SOLE              103410
iShares                        Exchange Traded  464288638   28040   252295 SH       SOLE              252295
iShares                        Exchange Traded  464288646  115290  1092384 SH       SOLE             1092384
J P Morgan Chase & Co          Common Stock     46625H100    9960   209870 SH       SOLE              209870
Johnson & Johnson              Common Stock     478160104    8909   109270 SH       SOLE              109270
Kilroy Realty Corp             REIT             49427F108   71467  1363879 SH       SOLE             1356877              7002
Kimberly-Clark Corp            Common Stock     494368103    4089    41730 SH       SOLE               41730
Kimco Realty Corp              REIT             49446R109   35787  1597626 SH       SOLE             1589468              8158
Kinder Morgan Energy Partners  Master Ltd Part  494550106   35594   396500 SH       SOLE              396500
Kinder Morgan Inc              Common Stock     49456B101   67454  1743906 SH       SOLE             1743906
Lasalle Hotel Properties       REIT             517942108   32106  1265030 SH       SOLE             1258581              6449
Lilly [Eli] & Co               Common Stock     532457108    4400    77475 SH       SOLE               77475
Linn Energy LLC                Master Ltd Part  536020100    8641   228000 SH       SOLE              228000
Lockheed Martin Corp           Common Stock     539830109     548     5675 SH       SOLE                5675
Lowe's Companies Inc           Common Stock     548661107     895    23610 SH       SOLE               23610
Macerich Co                    REIT             554382101   70765  1099176 SH       SOLE             1093506              5670
Magellan Midstream Partn LP    Master Ltd Part  559080106   25117   470090 SH       SOLE              470090
Markwest Energy Partners LP    Master Ltd Part  570759100   36086   594000 SH       SOLE              594000
MasterCard Inc                 Common Stock     57636Q104    7984    14755 SH       SOLE               14755
McDonald's Corp                Common Stock     580135101    6907    69280 SH       SOLE               69280
Medtronic Inc                  Common Stock     585055106    3167    67445 SH       SOLE               67445
Merck &  Co Inc.               Common Stock     58933Y105    6955   157253 SH       SOLE              157253
Metlife Inc                    Common Stock     59156R108     884    23250 SH       SOLE               23250
Microsoft Corp                 Common Stock     594918104    9161   320218 SH       SOLE              320218
Mondelez International Inc     Common Stock     609207105    1157    37805 SH       SOLE               37805
Monsanto Co                    Common Stock     61166W101    1204    11395 SH       SOLE               11395
Morgan Stanley                 Common Stock     617446448     644    29290 SH       SOLE               29290
National Grid Plc              ADRs             636274300   10945   188673 SH       SOLE              188673
National Oilwell Varco Inc     Common Stock     637071101     642     9075 SH       SOLE                9075
News Corp Cl A                 Common Stock     65248E104    1298    42535 SH       SOLE               42535
NextEra Energy Inc             Common Stock     65339F101   82616  1063540 SH       SOLE             1063540
Nike Inc                       Common Stock     654106103     916    15530 SH       SOLE               15530
Nippon Telegraph & Telephone   ADRs             654624105    1779    81825 SH       SOLE               81825
Nisource Inc                   Common Stock     65473P105   61874  2108865 SH       SOLE             2108865
Norfolk Southern Corp          Common Stock     655844108     518     6720 SH       SOLE                6720
Northeast Utilities            Common Stock     664397106   89250  2053620 SH       SOLE             2053620
Northwest Natural Gas Co       Common Stock     667655104   36781   839370 SH       SOLE              839370
NV Energy Inc                  Common Stock     67073Y106   62749  3132730 SH       SOLE             3132730
Occidental Petroleum Corp      Common Stock     674599105    2954    37695 SH       SOLE               37695
Oneok Inc                      Common Stock     682680103    3275    68700 SH       SOLE               68700
Oneok Partners                 Master Ltd Part  68268N103   11480   200000 SH       SOLE              200000
Oracle Corp                    Common Stock     68389X105    2538    78480 SH       SOLE               78480
Pebblebrook Hotel Trust        REIT             70509V100    7247   280990 SH       SOLE              279519              1471
Pepco Holdings Inc             Common Stock     713291102   76398  3570000 SH       SOLE             3570000
Pepsico Inc                    Common Stock     713448108    6080    76860 SH       SOLE               76860
Pfizer Inc                     Common Stock     717081103    8536   295763 SH       SOLE              295763
Philip Morris International    Common Stock     718172109    3250    35055 SH       SOLE               35055
Piedmont Natural Gas Co        Common Stock     720186105   32880  1000000 SH       SOLE             1000000
Pinnacle West Capital Corp     Common Stock     723484101   89704  1549560 SH       SOLE             1549560
Plains All Amer Pipelne  LP    Master Ltd Part  726503105   26862   475610 SH       SOLE              475610
PPL Corp                       Common Stock     69351T106   79684  2545000 SH       SOLE             2545000
Procter & Gamble Co            Common Stock     742718109    4476    58080 SH       SOLE               58080
Prologis Inc                   REIT             74340W103  111384  2785996 SH       SOLE             2771618             14378
Public Service Entrp Grp Inc   Common Stock     744573106   61812  1800000 SH       SOLE             1800000
Public Storage                 REIT             74460D109  121318   796469 SH       SOLE              792331              4138
Qualcomm Inc                   Common Stock     747525103    2447    36550 SH       SOLE               36550
Questar Corp                   Common Stock     748356102   48375  1988300 SH       SOLE             1988300
Raytheon Co                    Common Stock     755111507     407     6930 SH       SOLE                6930
Retail Opportunity Invts Cp    REIT             76131N101    5243   374200 SH       SOLE              372200              2000
Schlumberger Ltd               Common Stock     806857108    2115    28240 SH       SOLE               28240
Sempra Energy                  Common Stock     816851109   84818  1061025 SH       SOLE             1061025
Simon Property Group Inc       REIT             828806109  223085  1406946 SH       SOLE             1399695              7251
SL Green Realty Corp           REIT             78440X101   54927   637870 SH       SOLE              634588              3282
Southern Co                    Common Stock     842587107   70846  1509930 SH       SOLE             1509930
Spectra Energy Corp            Common Stock     847560109   67058  2180750 SH       SOLE             2180750
Spectra Energy Partners        Master Ltd Part  84756N109   10546   268000 SH       SOLE              268000
Starbucks Corp                 Common Stock     855244109     900    15800 SH       SOLE               15800
Sysco Corp                     Common Stock     871829107    2890    82170 SH       SOLE               82170
Tanger Factory Outlet Centers  REIT             875465106   56440  1559980 SH       SOLE             1552080              7900
Targa Resources Partners       Master Ltd Part  87611X105   39322   854465 SH       SOLE              854465
Target Corp                    Common Stock     87612E106     949    13865 SH       SOLE               13865
Taubman Centers Inc            REIT             876664103   63753   820925 SH       SOLE              816705              4220
TC Pipelines LP                Master Ltd Part  87233Q108   26855   553834 SH       SOLE              553834
TECO Energy Inc                Common Stock     872375100   53460  3000000 SH       SOLE             3000000
Teekay LNG Partners            Master Ltd Part  Y8564M105   18222   439820 SH       SOLE              439820
Teekay Offshore Partners       Master Ltd Part  Y8565J101   11621   384919 SH       SOLE              384919
Texas Instruments Inc          Common Stock     882508104     833    23485 SH       SOLE               23485
Time Warner Inc                Common Stock     887317303    1141    19809 SH       SOLE               19809
TJX Companies Inc              Common Stock     872540109    1945    41610 SH       SOLE               41610
Transcanada Corp               Foreign Common   89353D107   58980  1231568 SH       SOLE             1231568
U S Bancorp                    Common Stock     902973304    1346    39662 SH       SOLE               39662
UDR Inc                        REIT             902653104   20162   833478 SH       SOLE              829126              4352
Union Pacific Corp             Common Stock     907818108    1416     9945 SH       SOLE                9945
Unisource Energy Corp          Common Stock     903119105   58728  1200000 SH       SOLE             1200000
United Parcel Service          Common Stock     911312106    1306    15205 SH       SOLE               15205
United Technologies Corp       Common Stock     913017109    1675    17930 SH       SOLE               17930
UnitedHealth Group Inc         Common Stock     91324P102    1250    21845 SH       SOLE               21845
Vanguard                       Exchange Traded  922042775   18974   409270 SH       SOLE              409270
Vanguard                       Exchange Traded  922042858    4443   103600 SH       SOLE              103600
Vanguard MSCI EAFE ETF         Exchange Traded  921943858   18747   514590 SH       SOLE              514590
Vectren Corp                   Common Stock     92240G101   53130  1500000 SH       SOLE             1500000
Ventas Inc                     REIT             92276F100   89564  1223550 SH       SOLE             1217275              6275
Verizon Communications Inc     Common Stock     92343V104   79875  1625128 SH       SOLE             1625128
Visa Inc                       Common Stock     92826C839    1863    10970 SH       SOLE               10970
Vodafone Group PLC             ADRs             92857W209   46969  1653255 SH       SOLE             1653255
Vornado Realty Trust           REIT             929042109   27928   333911 SH       SOLE              332164              1747
Wal-Mart Stores                Common Stock     931142103    5859    78300 SH       SOLE               78300
Walgreen Co                    Common Stock     931422109    4596    96386 SH       SOLE               96386
Walt Disney Co                 Common Stock     254687106    2181    38390 SH       SOLE               38390
Weingarten Realty Invst        REIT             948741103   26282   833031 SH       SOLE              828756              4275
Wellpoint Inc                  Common Stock     94973V107    3180    48010 SH       SOLE               48010
Wells Fargo & Co               Common Stock     949746101    4979   134594 SH       SOLE              134594
Westar Energy Inc              Common Stock     95709T100  104052  3136000 SH       SOLE             3136000
Western Gas Partners LP        Master Ltd Part  958254104   10813   182000 SH       SOLE              182000
WGL Holdings Inc               Common Stock     92924F106   44100  1000000 SH       SOLE             1000000
Williams Cos Inc               Common Stock     969457100   75493  2015284 SH       SOLE             2015284
Williams Partners LP           Master Ltd Part  96950F104   32458   626600 SH       SOLE              626600
Windstream Corp                Common Stock     97381W104   60239  7577207 SH       SOLE             7577207
Wisconsin Energy Corp          Common Stock     976657106    4033    94038 SH       SOLE               94038
XCEL Energy Inc                Common Stock     98389B100   82860  2789905 SH       SOLE             2789905