<DOCUMENT>
<TYPE>13F-HR/A
<SEQUENCE>1
<FILENAME>t305850.txt
<TEXT>
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 13F

                              FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: December 31, 2009

Check here if Amendment           [X]; Amendment Number: 1
This Amendment (Check only one.): [ ]  is a restatement.
                                  [ ]  adds new holding's entries

Institutional Investment Manager Filing this Report:
Name:    NWQ INVESTMENT MANAGEMENT CO, LLC
Address: 2049 Century Park East 16th Floor
         Los Angeles, CA 90067"


13F File Number: 028-01474

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of" this form.

Person Signing this Report on Behalf of Reporting Manager:
Name: Jon D. Bosse
Title: Chief Investment Officer
Phone: 310-712-4000

Signature, Place, and Date of Signing:

Jon D. Bosse, Los Angeles, CA   3/2/2010


Report Type (Check only one.):

[X ] 13F HOLDINGS REPORT.

[  ]   13F NOTICE.

[  ]   13F COMBINATION REPORT.

List of Other Managers Reporting for this Manager:
Nuveen Investments, Inc.


I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE ACT OF 1934.
<PAGE>


FORM 13F SUMMARY PAGE


Report Summary:

Number of Other Included Managers:               1

Form 13F Information Table Entry Total:         142

Form 13F Information Table Value Total:    $18,330,991,904


List of Other Included Managers:

No. 13F File Number Name 1 - 028-11405 -- Nuveen Investments, Inc.


<PAGE>


<TABLE>
<CAPTION>
                               TITLE
                               OF                                                 SH
NAME OF ISSUER                 CLASS      CUSIP NO     13FValue       Shares     PRN   INVT     OTHER       SOLE      SHARED   NONE
<S>                            <C>        <C>        <C>             <C>          <C>  <C>     <C>        <C>        <C>  <C>
Acergy SA                      ADR        00443E104     39,010,096.18  2,365,682.  SH   DEFINED   1     2,056,405.   0      309,277.
Actel Corp                     COM        004934105     23,712,510.35  1,929,415.  SH   DEFINED   1     1,520,065.   0      409,350.
Aetna Inc                      COM        00817Y108    252,554,218.50  7,780,475.  SH   DEFINED   1     6,575,651.   0    1,204,824.
Albany International Corp      COM        012348108     18,809,337.12    819,222.  SH   DEFINED   1       643,172.   0      176,050.
Allied World Assurance Co
  Holdings Ltd                 COM        G0219G203      9,802,580.37    212,223.  SH   DEFINED   1       205,011.   0        7,212.
Alpha Natural Resources Inc    COM        02076X102    12,901,406.175    282,461.  SH   DEFINED   1        10,500.   0      271,961.
Amgen Inc                      COM        031162100    630,077,839.41  11,001,883. SH   DEFINED   1     9,158,059.   0    1,843,824.
AngloGold Ashanti Ltd          ADR        035128206    503,113,989.99  11,987,467. SH   DEFINED   1     9,875,679.   0    2,111,788.
Annaly Capital Management Inc  REIT       035710409        343,134.00     19,800.  SH   DEFINED   1        19,800.   0             .
AON Corp                       COM        037389103    480,028,691.74  12,602,486. SH   DEFINED   1    10,576,850.   0    2,025,636.
Apache Corp                    COM        037411105    777,467,242.34  7,380,551.  SH   DEFINED   1     5,951,051.   0    1,429,500.
Approach Resources Inc         COM        03834A103      8,794,375.20  1,127,484.  SH   DEFINED   1       894,963.   0      232,521.
Arrow Electronics Inc          COM        042735100     25,760,803.41    859,553.  SH   DEFINED   1       835,956.   0       23,597.
Aspen Insurance Holdings Ltd   COM        G05384105     18,405,544.02    717,006.  SH   DEFINED   1       566,406.   0      150,600.
Assurant Inc                   COM        04621X108     18,436,879.24    613,132.  SH   DEFINED   1       596,040.   0       17,092.
AT&T Inc                       COM        00206R102    240,381,823.67  8,491,057.  SH   DEFINED   1     6,991,101.   0    1,499,956.
Avnet Inc                      COM        053807103     26,103,500.92    859,516.  SH   DEFINED   1       835,369.   0       24,147.
Banco Santander SA             ADR        05964H105      3,915,450.00    231,000.  SH   DEFINED   1       231,000.   0             .
Barclays Bank PLC              PUBLIC     06739F390      1,255,791.80     61,300.  SH   DEFINED   1        61,300.   0             .
Barclays Bank PLC              PUBLIC     06739H362        744,000.00     30,000.  SH   DEFINED   1        30,000.   0             .
Barclays Bank PLC              PUBLIC     06739H776      1,110,000.00     50,000.  SH   DEFINED   1        50,000.   0             .
Barrick Gold Corp              COM        067901108    629,679,975.40  15,509,359. SH   DEFINED   1    13,092,166.   0    2,417,193.
Belden Inc                     COM        077454106     36,096,162.62  1,567,354.  SH   DEFINED   1     1,409,192.   0      158,162.
Bill Barrett Corp              COM        06846N104     39,163,519.45  1,197,295.  SH   DEFINED   1       991,681.   0      205,614.
BJ Services Co                 COM        055482103      7,002,524.52    368,748.  SH   DEFINED   1       361,205.   0        7,543.
BlackRock Credit Allocation    Closed-End
  Income Trust II Inc          Fund       09255H105        105,050.00     11,000.  SH   DEFINED   1        11,000.   0             .
Bob Evans Farms Inc/DE         COM        096761101     16,090,823.07    546,749.  SH   DEFINED   1       435,253.   0      111,496.
Brocade Communications Systems
  Inc                          COM        111621306     30,183,995.75  3,845,095.  SH   DEFINED   1     3,458,119.   0      386,976.
Buckeye Technologies Inc       COM        118255108      7,659,614.59    760,637.  SH   DEFINED   1       590,737.   0      169,900.
CA Inc                         COM        12673P105    867,072,562.95  37,715,205. SH   DEFINED   1    31,645,172.   0    6,070,033.
Canadian Natural Resources Ltd COM        136385101    248,824,132.44  3,363,852.  SH   DEFINED   1     2,386,669.   0      977,183.
Carrizo Oil & Gas Inc          COM        144577103      9,837,695.76    352,353.  SH   DEFINED   1        49,531.   0      302,822.
Casey's General Stores Inc     COM        147528103     43,979,887.38  1,375,231.  SH   DEFINED   1     1,233,738.   0      141,493.
Caterpillar Inc                COM        149123101      6,372,609.00    107,700.  SH   DEFINED   1       107,700.   0             .
CBS Corp                       COM        124857202    168,338,682.00  11,888,325. SH   DEFINED   1     9,933,350.   0    1,954,975.
Chevron Corp                   COM        166764100        206,718.00      2,620.  SH   DEFINED   1         2,620.   0             .
CIRCOR International Inc       COM        17273K109     52,648,916.50  2,039,075.  SH   DEFINED   1     1,832,895.   0      206,180.
Citigroup Inc                  COM        172967101    533,603,472.33  157,637,658 SH   DEFINED   1    131,965,435.  0   25,672,223.
Coherent Inc                   COM        192479103     44,557,740.36  1,487,241.  SH   DEFINED   1     1,349,649.   0      137,592.
Comcast Corp                   COM        20030N200    180,155,719.23  11,113,863. SH   DEFINED   1     9,065,303.   0    2,048,560.
ConocoPhillips                 COM        20825C104    318,321,654.88  6,125,104.  SH   DEFINED   1     4,875,458.   0    1,249,646.
CVS Caremark Corp              COM        126650100    252,989,970.21  7,696,683.  SH   DEFINED   1     6,294,352.   0    1,402,331.
Denbury Resources Inc          COM        247916208     80,588,019.96  5,146,106.  SH   DEFINED   1     3,184,477.   0    1,961,629.
Elizabeth Arden Inc            COM        28660G106     64,892,767.24  4,346,468.  SH   DEFINED   1     3,906,530.   0      439,938.
ENI SpA                        ADR        26874R108      6,728,804.51    128,929.  SH   DEFINED   1       128,929.   0             .
EXCO Resources Inc             COM        269279402      3,514,244.00    158,800.  SH   DEFINED   1         6,200.   0      152,600.
Exxon Mobil Corp               COM        30231G102      4,077,697.33     59,003.  SH   DEFINED   1        59,003.   0             .
FBR Capital Markets Corp       COM        30247C301     11,236,875.00  1,797,900.  SH   DEFINED   1     1,674,200.   0      123,700.
First Mercury Financial Corp   COM        320841109     11,368,080.00    820,800.  SH   DEFINED   1       651,506.   0      169,294.
First Solar Inc                COM        336433107      4,989,681.20     36,988.  SH   DEFINED   1              .   0       36,988.
Flaherty & Crumrine/Claymore   Closed-End
  Preferred Securiti           Fund       338478100      2,336,330.00    167,000.  SH   DEFINED   1       167,000.   0             .
Frontier Communications Corp   COM        35906A108      2,829,816.00    356,400.  SH   DEFINED   1       356,400.   0             .
Gardner Denver Inc             COM        365558105     22,906,689.75    532,095.  SH   DEFINED   1       516,826.   0       15,269.
General Cable Corp             COM        369300108     15,161,572.71    499,887.  SH   DEFINED   1       454,066.   0       45,821.
General Electric Co            COM        369604103      4,135,198.65    266,615.  SH   DEFINED   1       266,615.   0             .
Genworth Financial Inc         COM        37247D106    316,742,796.00  26,395,233. SH   DEFINED   1    22,322,202.   0    4,073,031.
Gibraltar Industries Inc       COM        374689107   14,551,779.8096    843,601.  SH   DEFINED   1       762,681.   0       80,920.
GlaxoSmithKline PLC            ADR        37733W105      5,956,583.30    138,284.  SH   DEFINED   1       138,284.   0             .
Golfsmith International
  Holdings Inc                 COM        38168Y103      2,860,467.48  1,222,422.  SH   DEFINED   1       995,858.   0      226,564.
GrafTech International Ltd     COM        384313102        316,918.40     20,420.  SH   DEFINED   1        20,380.   0           40.
Griffon Corp                   COM        398433102     59,859,627.86  4,758,317.  SH   DEFINED   1     4,279,344.   0      478,973.
Halliburton Co                 COM        406216101  229,605,082.9743  7,451,783.  SH   DEFINED   1     5,562,808.   0    1,888,975.
Hanover Insurance Group
  Inc/The                      COM        410867105     37,848,989.48    850,348.  SH   DEFINED   1       777,014.   0       73,334.
Harsco Corp                    COM        415864107      8,526,842.70    253,398.  SH   DEFINED   1       246,733.   0        6,665.
Hartford Financial Services
  Group Inc                    COM        416515104    389,685,743.20  16,291,210. SH   DEFINED   1    13,625,528.   0    2,665,682.
HCC Insurance Holdings Inc     COM        404132102      8,373,937.99    298,111.  SH   DEFINED   1       289,933.   0        8,178.
Hess Corp                      COM        42809H107  280,303,862.1968  4,443,632.  SH   DEFINED   1     3,486,238.   0      957,394.
Hooker Furniture Corp          COM        439038100      6,577,076.00    517,880.  SH   DEFINED   1       403,254.   0      114,626.
Hormel Foods Corp              COM        440452100   12,620,986.3395    330,165.  SH   DEFINED   1       321,292.   0        8,873.
HSBC Holdings PLC              PUBLIC     404280604        392,406.19     18,100.  SH   DEFINED   1        18,100.   0             .
Ingersoll Rand                 COM        G47791101    311,900,356.35  8,627,949.  SH   DEFINED   1     7,190,362.   0    1,437,587.
Interpublic Group of Cos Inc   COM        460690100     30,744,599.97  4,104,753.  SH   DEFINED   1     3,912,758.   0      191,995.
Intrepid Potash Inc            COM        46121Y102     15,385,908.90    510,990.  SH   DEFINED   1       496,567.   0       14,423.
iShares iBoxx Investment Grade
  Corporate Bond               ETP        464287242     55,976,435.52    534,943.  SH   DEFINED   1       491,523.   0       43,420.
iShares Russell 1000 Value
  Index Fund                   ETP        464287598     10,569,058.29    180,714.  SH   DEFINED   1       176,877.   0        3,837.
JPMorgan Chase & Co            COM        46625H100    381,045,107.10  8,923,773.  SH   DEFINED   1     7,447,941.   0    1,475,832.
Keithley Instruments Inc       COM        487584104      5,931,136.49  1,281,023.  SH   DEFINED   1       985,958.   0      295,065.
Kimberly-Clark Corp            COM        494368103    399,913,921.17  6,232,101.  SH   DEFINED   1     5,171,537.   0    1,060,564.
Kroger Co/The                  COM        501044101    198,491,341.20  9,635,502.  SH   DEFINED   1     8,010,478.   0    1,625,024.
Lincoln Electric Holdings Inc  COM        533900106     29,655,634.71    547,051.  SH   DEFINED   1       491,273.   0       55,778.
Lockheed Martin Corp           COM        539830109    470,324,856.60  6,160,116.  SH   DEFINED   1     5,341,010.   0      819,106.
Loews Corp                     COM        540424108    575,429,559.30  15,458,148. SH   DEFINED   1    12,897,987.   0    2,560,161.
Marten Transport Ltd           COM        573075108     10,970,931.65    609,835.  SH   DEFINED   1       483,260.   0      126,575.
Mattson Technology Inc         COM        577223100     18,561,633.09  5,199,337.  SH   DEFINED   1     4,763,737.   0      435,600.
Merck & Co Inc                 COM        58933Y105    415,728,113.00  11,377,343. SH   DEFINED   1     9,361,613.   0     2,015,730
MetLife Inc                    COM        59156R108    430,194,362.85  11,900,259. SH   DEFINED   1     9,802,117.   0    2,098,142.
Microsoft Corp                 COM        594918104    275,412,437.61  8,887,139.  SH   DEFINED   1     7,355,552.   0    1,531,587.
Middleby Corp                  COM        596278101     21,120,539.35    418,643.  SH   DEFINED   1       376,987.   0       41,656.
Mosaic Co/The                  COM        61945A107    177,424,204.10  2,854,774.  SH   DEFINED   1     2,343,308.   0      511,466.
Motorola Inc                   COM        620076109    773,049,656.00  96,631,207. SH   DEFINED   1    81,322,313.   0   15,308,894.
Newmont Mining Corp            COM        651639106     18,095,831.04    372,036.  SH   DEFINED   1       369,636.   0        2,400.
Noble Energy Inc               COM        655044105    694,709,822.38  9,487,979.  SH   DEFINED   1     7,787,449.   0    1,700,530.
Northrop Grumman Corp          COM        666807102      1,473,229.95     26,135.  SH   DEFINED   1        26,135.   0             .
Northwest Bancshares Inc.      COM        667340103     14,100,411.76  1,239,052.  SH   DEFINED   1      1,113,581   0       125,471
NRG Energy Inc                 COM        629377508    238,181,476.35  9,928,365.  SH   DEFINED   1     8,129,870.   0    1,798,495.
Omnicare Inc                   COM        681904108     26,104,399.74  1,061,586.  SH   DEFINED   1     1,032,347.   0       29,239.
Packaging Corp of America      COM        695156109     33,410,067.68  1,422,916.  SH   DEFINED   1     1,330,187.   0       92,729.
PacWest Bancorp                COM        695263103     12,224,177.05    580,721.  SH   DEFINED   1       456,821.   0      123,900.
People's United Financial Inc  COM        712704105     18,952,340.72  1,122,769.  SH   DEFINED   1     1,092,004.   0       30,765.
Perrigo Co                     COM        714290103      8,170,564.05    201,295.  SH   DEFINED   1       195,696.   0        5,599.
Petrohawk Energy Corp          COM        716495106     39,521,280.96  1,546,216.  SH   DEFINED   1       918,630.   0      627,586.
Petroquest Energy Inc          COM        716748108     15,057,475.41  2,318,318.  SH   DEFINED   1     1,906,952.   0      411,366.
Pfizer Inc                     COM        717081103     20,840,890.92  1,109,148.  SH   DEFINED   1     1,104,648.   0        4,500.
Philip Morris International
  Inc                          COM        718172109    361,659,093.13  7,316,591.  SH   DEFINED   1     6,396,414.   0      920,177.
Pitney Bowes Inc               COM        724479100    495,633,093.32  21,700,223. SH   DEFINED   1    18,241,603.   0    3,458,620.
PMA Capital Corp               COM        693419202    15,837,006.404  2,413,442.  SH   DEFINED   1     2,046,907.   0      366,535.
PrivateBancorp Inc             COM        742962103     38,968,881.08  4,334,692.  SH   DEFINED   1     4,028,833.   0      305,859.
Quicksilver Resources Inc      COM        74837R104      7,416,927.63    466,767.  SH   DEFINED   1        79,089.   0      387,678.
Raytheon Co                    COM        755111507    395,831,727.48  7,620,942.  SH   DEFINED   1     6,603,649.   0    1,017,293.
RBC Bearings Inc               COM        75524B104      5,038,764.70    201,470.  SH   DEFINED   1       165,920.   0       35,550.
Redwood Trust Inc              REIT       758075402     40,478,456.20  2,772,497.  SH   DEFINED   1     2,641,313.   0      131,184.
Reinsurance Group of America
  Inc                          COM        759351604    118,585,001.16  2,453,652.  SH   DEFINED   1     2,316,455.   0      137,197.
Reliance Steel & Aluminum Co   COM        759509102     22,980,617.40    506,181.  SH   DEFINED   1       491,715.   0       14,466.
Rockwell Collins Inc           COM        774341101      3,390,600.00     60,000.  SH   DEFINED   1              .   0       60,000.
Royal Gold Inc                 COM        780287108     26,726,546.46    554,838.  SH   DEFINED   1       484,280.   0       70,558.
Sanofi-Aventis SA              ADR        80105N105    397,384,171.52  9,701,762.  SH   DEFINED   1     7,993,788.   0    1,707,974.
Skilled Healthcare Group Inc   COM        83066R107     11,382,167.28  1,511,576.  SH   DEFINED   1     1,201,687.   0      309,889.
Southwestern Energy Co         COM        845467109     15,237,490.32    302,872.  SH   DEFINED   1        11,700.   0      291,172.
St Mary Land & Exploration Co  COM        792228108     61,002,749.52  1,703,036.  SH   DEFINED   1     1,194,239.   0      508,797.
StanCorp Financial Group Inc   COM        852891100     42,313,378.10  1,024,537.  SH   DEFINED   1       920,602.   0      103,935.
Standard Microsystems Corp     COM        853626109     15,623,255.68    716,992.  SH   DEFINED   1       568,012.   0      148,980.
Talisman Energy Inc            COM        87425E103    295,542,686.55  15,429,010. SH   DEFINED   1    11,999,497.   0    3,429,513.
Temple-Inland Inc              COM        879868107     17,511,332.08    795,608.  SH   DEFINED   1       715,456.   0       80,152.
Texas Capital Bancshares Inc   COM        88224Q107    35,188,459.785  2,466,769.  SH   DEFINED   1     2,218,363.   0      248,406.
Thompson Creek Metals Co Inc   COM        884768102     13,115,001.58  1,075,882.  SH   DEFINED   1       854,182.   0      221,700.
Timken Co                      COM        887389104     52,812,738.16  2,160,914.  SH   DEFINED   1     2,070,769.   0       90,145.
Total SA                       ADR        89151E109    8,139,252.0755    123,305.  SH   DEFINED   1       123,305.   0             .
Tower Group Inc                COM        891777104     65,915,555.59  2,796,587.  SH   DEFINED   1     2,584,509.   0      212,078.
Transatlantic Holdings Inc     COM        893521104    11,806,382.625    222,825.  SH   DEFINED   1       199,025.   0       23,800.
Travelers Cos Inc/The          COM        89417E109     49,725,774.76    990,356.  SH   DEFINED   1       832,175.   0      158,181.
TreeHouse Foods Inc            COM        89469A104    9,774,010.6758    247,821.  SH   DEFINED   1       197,046.   0       50,775.
Union Pacific Corp             COM        907818108    300,853,968.96  4,639,944.  SH   DEFINED   1     3,849,534.   0      790,410.
Unum Group                     COM        91529Y106     12,477,809.37    629,239.  SH   DEFINED   1       625,687.   0        3,552.
Verizon Communications Inc     COM        92343V104    224,100,540.30  6,754,085.  SH   DEFINED   1     5,692,415.   0    1,061,670.
Viacom Inc                     COM        92553P201    746,200,212.73  24,766,021. SH   DEFINED   1    20,674,497.   0    4,091,524.
WABCO Holdings Inc             COM        92927K102      5,982,291.00    225,960.  SH   DEFINED   1       178,860.   0       47,100.
Warren Resources Inc           COM        93564A100     10,806,866.28  4,288,439.  SH   DEFINED   1     3,878,190.   0      410,249.
Wausau Paper Corp              COM        943315101   45,813,894.0072  3,871,444.  SH   DEFINED   1     3,473,267.   0      398,177.
Weatherford International Ltd  COM        H27013103      5,846,871.30    313,000.  SH   DEFINED   1              .   0      313,000.
Wells Fargo & Co               COM        949746101  363,929,549.0013  13,262,787. SH   DEFINED   1    10,834,490.   0    2,428,297.
WESCO International Inc        COM        95082P105      9,218,132.00    333,025.  SH   DEFINED   1       323,156.   0        9,869.
Western Alliance Bancorp       COM        957638109     27,459,369.81  6,987,117.  SH   DEFINED   1     6,223,005.   0      764,112.
</TABLE>

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