옴니콤 그룹 주식회사
US ˙ NYSE ˙ US6819191064

SecurityOMC / Omnicom Group Inc.
InstitutionBoston Partners
Latest Disclosed Ownership782,689 shares
Latest Disclosed Value $ 58,941,663
Boston Partners reports 5.00% decrease in ownership of OMC / Omnicom Group Inc.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 782,689 shares of Omnicom Group Inc. (US:OMC) valued at $58,944,309 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 823,907 shares of Omnicom Group Inc.. This represents a change in shares of -5.00% during the quarter. The current value of the position is $58,944,309 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F OMNICOM GROUP COM 681919106 782,689 -41,218 -5.00 58,942 -11.36 0.0264
2026-02-13 2025-12-31 13F OMNICOM GROUP COM 681919106 823,907 -2,358,467 -74.11 66,498 -74.35 0.0689
2025-11-13 2025-09-30 13F OMNICOM GROUP COM 681919106 3,182,374 79,571 2.56 259,229 16.08 0.2662
2025-08-12 2025-06-30 13F/A-1 OMNICOM GROUP COM 681919106 3,102,803 -1,779,238 -36.44 223,312 -44.53 0.2480
2025-08-07 2025-06-30 13F OMNICOM GROUP COM 681919106 3,095,640 -1,786,401 222,797 0.1023
2025-05-13 2025-03-31 13F OMNICOM GROUP COM 681919106 4,882,041 762,871 18.52 402,598 13.59 0.4869
2025-02-11 2024-12-31 13F OMNICOM GROUP COM 681919106 4,119,170 -140,285 -3.29 354,430 -19.53 0.4311
2024-11-12 2024-09-30 13F OMNICOM GROUP COM 681919106 4,259,455 402,331 10.43 440,426 27.08 0.5198
2024-08-14 2024-06-30 13F OMNICOM GROUP COM 681919106 3,857,124 -17,733 -0.46 346,572 -7.53 0.4305
2024-05-28 2024-03-31 13F/A-1 OMNICOM GROUP COM 681919106 3,874,857 383,560 10.99 374,795 23.97 0.4464
2024-05-13 2024-03-31 13F OMNICOM GROUP COM 681919106 3,874,857 383,560 374,795 0.1855
2024-02-07 2023-12-31 13F OMNICOM GROUP COM 681919106 3,491,297 -236,404 -6.34 302,338 8.86 0.4004
2023-11-08 2023-09-30 13F OMNICOM GROUP COM 681919106 3,727,701 664,800 21.70 277,726 -4.01 0.3845
2023-08-10 2023-06-30 13F OMNICOM GROUP COM 681919106 3,062,901 2,467,632 414.54 289,324 415.27 0.3894
2023-05-09 2023-03-31 13F OMNICOM GROUP COM 681919106 595,269 241,455 68.24 56,151 94.49 0.0772
2023-02-08 2022-12-31 13F OMNICOM GROUP COM 681919106 353,814 -22,419 -5.96 28,872 21.55 0.0391
2022-11-09 2022-09-30 13F OMNICOM GROUP COM 681919106 376,233 -153,055 -28.92 23,752 -29.48 0.0348
2022-08-10 2022-06-30 13F OMNICOM GROUP COM 681919106 529,288 -74,651 -12.36 33,682 -34.28 0.0471
2022-05-10 2022-03-31 13F OMNICOM GROUP COM 681919106 603,939 41,650 7.41 51,250 24.36 0.0621
2022-02-04 2021-12-31 13F OMNICOM GROUP COM 681919106 562,289 79,243 16.40 41,210 17.72 0.0496
2021-11-05 2021-09-30 13F OMNICOM GROUP COM 681919106 483,046 48,354 11.12 35,008 0.69 0.0444
2021-08-12 2021-06-30 13F OMNICOM GROUP COM 681919106 434,692 15,274 3.64 34,769 11.74 0.0443
2021-05-10 2021-03-31 13F OMNICOM GROUP COM 681919106 419,418 24,933 6.32 31,115 26.46 0.0417
2021-02-10 2020-12-31 13F/A-1 OMNICOM GROUP COM 681919106 394,485 3,303 0.84 24,604 27.07 0.0383
2021-02-04 2020-12-31 13F OMNICOM GROUP COM 681919106 394,485 3,303 24,604 14,760.9376
2020-11-13 2020-09-30 13F/A-1 OMNICOM GROUP COM 681919106 391,182 -14,392 -3.55 19,363 -12.56 0.0353
2020-11-09 2020-09-30 13F OMNICOM GROUP COM 681919106 405,574 0 22,145 16,257.0680
2020-08-12 2020-06-30 13F OMNICOM GROUP COM 681919106 405,574 -855,024 -67.83 22,145 -67.99 0.0407
2020-05-13 2020-03-31 13F OMNICOM GROUP COM 681919106 1,260,598 -30,136 -2.33 69,184 -33.84 0.1374
2020-02-06 2019-12-31 13F/A-1 OMNICOM GROUP COM 681919106 1,290,734 -12,997 -1.00 104,568 2.44 0.1383
2020-02-05 2019-12-31 13F OMNICOM GROUP COM 681919106 1,290,734 -12,997 104,568 58,791.1837
2019-11-20 2019-09-30 13F/A-1 OMNICOM GROUP COM 681919106 1,303,731 22,469 1.75 102,075 -2.80 0.1382
2019-11-08 2019-09-30 13F OMNICOM GROUP COM 681919106 1,281,196 -66 104,963 0.1388
2019-08-26 2019-06-30 13F/A-1 OMNICOM GROUP COM 681919106 1,281,262 28,720 2.29 105,012 14.86 0.1377
2019-08-09 2019-06-30 13F OMNICOM GROUP COM 681919106 1,281,280 28,738 105,013
2019-05-13 2019-03-31 13F/A-1 OMNICOM GROUP COM 681919106 1,252,542 -263,787 -17.40 91,423 -17.68 0.1211
2019-05-03 2019-03-31 13F OMNICOM GROUP COM 681919106 1,252,542 -263,787 91,423
2019-02-07 2018-12-31 13F OMNICOM GROUP COM 681919106 1,516,329 -17,586 -1.15 111,056 6.44 0.1596
2018-11-14 2018-09-30 13F OMNICOM GROUP COM 681919106 1,533,915 31,642 2.11 104,337 -8.94 0.1212
2018-08-03 2018-06-30 13F OMNICOM GROUP COM 681919106 1,502,273 31,493 2.14 114,579 7.20 0.1373
2018-05-04 2018-03-31 13F OMNICOM GROUP COM 681919106 1,470,780 15,149 1.04 106,881 0.82 0.1289
2018-02-14 2017-12-31 13F/A-1 OMNICOM GROUP COM 681919106 1,455,631 -164,100 -10.13 106,013 -11.64 0.1249
2018-02-01 2017-12-31 13F OMNICOM GROUP COM 681919106 1,455,631 -164,100 106,013
2017-11-02 2017-09-30 13F OMNICOM GROUP COM 681919106 1,619,731 -712,789 -30.56 119,973 -37.96 0.1482
2017-08-02 2017-06-30 13F OMNICOM GROUP COM 681919106 2,332,520 -170,961 -6.83 193,366 -10.41 0.2459
2017-05-03 2017-03-31 13F OMNICOM GROUP COM 681919106 2,503,481 203,259 8.84 215,825 10.24 0.2756
2017-02-06 2016-12-31 13F OMNICOM GROUP COM 681919106 2,300,222 -932,494 -28.85 195,772 -28.75 0.2574
2016-11-09 2016-09-30 13F OMNICOM GROUP COM 681919106 3,232,716 -2,275,576 -41.31 274,780 -38.78 0.3842
2016-08-05 2016-06-30 13F OMNICOM GROUP COM 681919106 5,508,292 -859,398 -13.50 448,870 -15.30 0.6486
2016-05-12 2016-03-31 13F OMNICOM GROUP COM 681919106 6,367,690 1,018,445 19.04 529,983 30.95 0.7806
2016-02-08 2015-12-31 13F OMNICOM GROUP COM 681919106 5,349,245 -30,361 -0.56 404,724 14.16 0.5797
2015-11-10 2015-09-30 13F OMNICOM GROUP COM 681919106 5,379,606 191,097 3.68 354,516 -1.67 0.5404
2015-08-10 2015-06-30 13F OMNICOM GROUP COM 681919106 5,188,509 283,941 5.79 360,549 -5.73 0.5180
2015-05-05 2015-03-31 13F OMNICOM GROUP COM 681919106 4,904,568 -123,941 -2.46 382,458 -1.82 0.5694
2015-02-09 2014-12-31 13F OMNICOM GROUP COM 681919106 5,028,509 175,254 3.61 389,559 16.57 0.5847
2014-11-12 2014-09-30 13F OMNICOM GROUP COM 681919106 4,853,255 160,478 3.42 334,195 -0.01 0.5424
2014-08-08 2014-06-30 13F OMNICOM GROUP COM 681919106 4,692,777 320,736 7.34 334,220 5.30 0.5598
2014-05-07 2014-03-31 13F OMNICOM GROUP COM 681919106 4,372,041 -558,889 -11.33 317,410 -13.44 0.5790
2014-02-06 2013-12-31 13F OMNICOM GROUP COM 681919106 4,930,930 -868,859 -14.98 366,714 -0.33 0.7518
2013-11-12 2013-09-30 13F OMNICOM GROUP COM 681919106 5,799,789 402,732 7.46 367,939 8.44 0.8872
2013-08-01 2013-06-30 13F OMNICOM GROUP COM 681919106 5,397,057 5,397,057 339,313 0.9341
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.