Omnicom Group Inc.
IT ˙ BIT ˙ US6819191064
64,76 € ↑1,38 (2,18%)
2026-06-03
DEL PRIS
SecurityIT:1OMC / Omnicom Group Inc.
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership169,207 shares
Latest Disclosed Value $ 12,742,979
Asset Management One Co., Ltd. reports 50.04% increase in ownership of 1OMC / Omnicom Group Inc.

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 169,207 shares of Omnicom Group Inc. (IT:1OMC) valued at $11,709,124 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 112,771 shares of Omnicom Group Inc.. This represents a change in shares of 50.04% during the quarter. The current value of the position is $10,957,845 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)
2026-05-08 2026-03-31 13F OMNICOM GROUP COM 681919106 169,207 56,436 50.04 12,743 40.41 0.0376
2026-01-27 2025-12-31 13F OMNICOM GROUP COM 681919106 112,771 32,432 40.37 9,075 38.55 0.0252
2025-10-22 2025-09-30 13F OMNICOM GROUP COM 681919106 80,339 -3,990 -4.73 6,550 7.98 0.0190
2025-07-31 2025-06-30 13F OMNICOM GROUP COM 681919106 84,329 2,855 3.50 6,067 -10.20 0.0190
2025-04-23 2025-03-31 13F OMNICOM GROUP COM 681919106 81,474 7,665 10.38 6,755 5.83 0.0234
2025-01-30 2024-12-31 13F OMNICOM GROUP COM 681919106 73,809 835 1.14 6,384 -15.39 0.0219
2024-10-30 2024-09-30 13F OMNICOM GROUP COM 681919106 72,974 442 0.61 7,545 15.95 0.0268
2024-07-18 2024-06-30 13F OMNICOM GROUP COM 681919106 72,532 -12,423 -14.62 6,506 -20.85 0.0249
2024-05-02 2024-03-31 13F OMNICOM GROUP COM 681919106 84,955 -4,548 -5.08 8,220 5.90 0.0317
2024-01-24 2023-12-31 13F OMNICOM GROUP COM 681919106 89,503 -25,678 -22.29 7,763 -9.51 0.0312
2023-10-19 2023-09-30 13F OMNICOM GROUP COM 681919106 115,181 -1,462 -1.25 8,579 -22.71 0.0382
2023-07-31 2023-06-30 13F OMNICOM GROUP COM 681919106 116,643 -5,711 -4.67 11,099 -3.85 0.0470
2023-04-25 2023-03-31 13F OMNICOM GROUP COM 681919106 122,354 2,968 2.49 11,543 18.50 0.0523
2023-02-06 2022-12-31 13F OMNICOM GROUP COM 681919106 119,386 3,465 2.99 9,741 33.19 0.0475
2022-11-04 2022-09-30 13F OMNICOM GROUP COM 681919106 115,921 -8,949 -7.17 7,313 -7.92 0.0372
2022-07-29 2022-06-30 13F OMNICOM GROUP COM 681919106 124,870 -8,013 -6.03 7,942 -29.59 0.0373
2022-05-13 2022-03-31 13F OMNICOM GROUP COM 681919106 132,883 -19,592 -12.85 11,279 0.60 0.0440
2022-02-09 2021-12-31 13F OMNICOM GROUP COM 681919106 152,475 5,493 3.74 11,212 5.28 0.0391
2021-11-02 2021-09-30 13F OMNICOM GROUP COM 681919106 146,982 7,239 5.18 10,650 -4.72 0.0408
2021-08-03 2021-06-30 13F OMNICOM GROUP COM 681919106 139,743 11,977 9.37 11,178 18.00 0.0416
2021-05-14 2021-03-31 13F OMNICOM GROUP COM 681919106 127,766 -1,746 -1.35 9,473 17.87 0.0376
2021-02-12 2020-12-31 13F OMNICOM GROUP COM 681919106 129,512 4,032 3.21 8,037 29.36 0.0331
2020-11-13 2020-09-30 13F OMNICOM GROUP COM 681919106 125,480 -2,013 -1.58 6,213 -10.75 0.0286
2020-08-14 2020-06-30 13F OMNICOM GROUP COM 681919106 127,493 -10,634 -7.70 6,961 -8.20 0.0342
2020-05-14 2020-03-31 13F OMNICOM GROUP COM 681919106 138,127 4,328 3.23 7,583 -30.05 0.0443
2020-02-14 2019-12-31 13F OMNICOM GROUP COM 681919106 133,799 2,816 2.15 10,841 5.71 0.0489
2019-11-14 2019-09-30 13F OMNICOM GROUP COM 681919106 130,983 -2,825 -2.11 10,255 -6.48 0.0494
2019-08-14 2019-06-30 13F OMNICOM GROUP COM 681919106 133,808 11,044 9.00 10,966 22.36 0.0539
2019-05-15 2019-03-31 13F OMNICOM GROUP COM 681919106 122,764 -252,215 -67.26 8,962 -67.32 0.0485
2019-02-13 2018-12-31 13F OMNICOM GROUP COM 681919106 374,979 1,838 0.49 27,427 8.04 0.0654
2018-11-14 2018-09-30 13F OMNICOM GROUP COM 681919106 373,141 -5,230 -1.38 25,387 -12.03 0.0521
2018-08-14 2018-06-30 13F OMNICOM GROUP COM 681919106 378,371 6,724 1.81 28,860 6.86 0.0631
2018-05-14 2018-03-31 13F OMNICOM GROUP COM 681919106 371,647 11,451 3.18 27,008 2.92 0.0608
2018-02-14 2017-12-31 13F OMNICOM GROUP COM 681919106 360,196 -2,124 -0.59 26,243 -2.23 0.0579
2017-11-14 2017-09-30 13F OMNICOM GROUP COM 681919106 362,320 -1,206 -0.33 26,841 -10.96 0.0630
2017-08-14 2017-06-30 13F OMNICOM GROUP COM 681919106 363,526 -13,637 -3.62 30,145 -7.27 0.0769
2017-05-11 2017-03-31 13F OMNICOM GROUP COM 681919106 377,163 -24,880 -6.19 32,509 -5.04 0.0854
2017-05-02 2016-12-31 13F/A-1 OMNICOM GROUP COM 681919106 402,043 380,025 1,725.97 34,235 1,747.54 0.0875
2017-02-13 2016-12-31 13F OMNICOM GROUP COM 681919106 455,614 38,795
2016-11-07 2016-09-30 13F OMNICOM GROUP Com 681919106 22,018 -1,162 -5.01 1,853 -0.48 0.0275
2016-08-03 2016-06-30 13F OMNICOM GROUP Com 681919106 23,180 -1,102 -4.54 1,862 -7.96 0.0279
2016-05-05 2016-03-31 13F OMNICOM GROUP Com 681919106 24,282 1,303 5.67 2,023 14.49 0.0295
2016-01-28 2015-12-31 13F OMNICOM GROUP Com 681919106 22,979 0 0.00 1,767 18.35 0.0264
2015-11-12 2015-09-30 13F OMNICOM GROUP Com 681919106 22,979 -1,681 -6.82 1,493 -12.54 0.0227
2015-08-06 2015-06-30 13F OMNICOM GROUP Com 681919106 24,660 0 0.00 1,707 -11.28 0.0237
2015-05-11 2015-03-31 13F OMNICOM GROUP COM 681919106 24,660 0 0.00 1,924 0.21 0.0238
2015-02-09 2014-12-31 13F OMNICOM GROUP COM 681919106 24,660 -10,159 -29.18 1,920 -20.13 0.0249
2014-11-05 2014-09-30 13F OMNICOM GROUP Com 681919106 34,819 -2,050 -5.56 2,404 -8.87 0.0332
2014-08-12 2014-06-30 13F OMNICOM GROUP Com 681919106 36,869 5,565 17.78 2,638 16.52 0.0394
2014-05-05 2014-03-31 13F OMNICOM GROUP COM 681919106 31,304 0 0.00 2,264 -1.61 0.0357
2014-02-05 2013-12-31 13F/A-1 OMNICOM GROUP COM 681919106 31,304 -176 -0.56 2,301 13.85 0.0357
2014-01-29 2013-12-31 13F OMNICOM GROUP COM 681919106 31,304 2,301
2014-02-05 2013-09-30 13F/A-1 OMNICOM GROUP Com 681919106 31,480 -1,170 -3.58 2,021 -1.99 0.0304
2013-11-06 2013-09-30 13F OMNICOM GROUP Com 681919106 31,480 2,021
2014-02-12 2013-06-30 13F/A-1 OMNICOM GROUP Com 681919106 32,650 32,650 2,062 0.0335
2013-08-05 2013-06-30 13F OMNICOM GROUP Com 681919106 32,650 2,062
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.