Omnicom Group Inc.
US ˙ NYSE ˙ US6819191064

SecurityOMC / Omnicom Group Inc.
InstitutionAsset Management Group, Inc.
Latest Disclosed Ownership7,143 shares
Latest Disclosed Value $ 537,903
Asset Management Group, Inc. reports 1.28% increase in ownership of OMC / Omnicom Group Inc.

On May 15, 2026 - Asset Management Group, Inc. filed a 13F-HR form disclosing ownership of 7,143 shares of Omnicom Group Inc. (US:OMC) valued at $537,939 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 7,053 shares of Omnicom Group Inc.. This represents a change in shares of 1.28% during the quarter. The current value of the position is $537,939 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)
2026-05-15 2026-03-31 13F OMNICOM GROUP COM 681919106 7,143 90 1.28 538 -5.62 0.0867
2026-02-17 2025-12-31 13F OMNICOM GROUP COM 681919106 7,053 -295 -4.01 570 -5.01 0.0921
2025-11-14 2025-09-30 13F OMNICOM GROUP COM 681919106 7,348 44 0.60 599 14.10 0.0980
2025-08-12 2025-06-30 13F OMNICOM GROUP COM 681919106 7,304 45 0.62 525 -12.65 0.0916
2025-05-14 2025-03-31 13F OMNICOM GROUP COM 681919106 7,259 -1,189 -14.07 602 -17.22 0.1112
2025-02-14 2024-12-31 13F OMNICOM GROUP COM 681919106 8,448 30 0.36 727 -16.55 0.1292
2024-11-12 2024-09-30 13F OMNICOM GROUP COM 681919106 8,418 53 0.63 870 16.00 0.1524
2024-08-13 2024-06-30 13F OMNICOM GROUP COM 681919106 8,365 50 0.60 750 -6.72 0.1398
2024-05-15 2024-03-31 13F OMNICOM GROUP COM 681919106 8,315 52 0.63 805 12.61 0.1510
2024-02-14 2023-12-31 13F OMNICOM GROUP COM 681919106 8,263 61 0.74 715 17.05 0.1432
2023-11-14 2023-09-30 13F OMNICOM GROUP COM 681919106 8,202 49 0.60 611 -21.29 0.1344
2023-08-14 2023-06-30 13F OMNICOM GROUP COM 681919106 8,153 49 0.60 776 1.44 0.1647
2023-05-15 2023-03-31 13F OMNICOM GROUP COM 681919106 8,104 52 0.65 765 16.46 0.1705
2023-02-14 2022-12-31 13F OMNICOM GROUP COM 681919106 8,052 68 0.85 657 30.16 0.1543
2022-11-14 2022-09-30 13F OMNICOM GROUP COM 681919106 7,984 69 0.87 504 0.20 0.1259
2022-08-15 2022-06-30 13F OMNICOM GROUP COM 681919106 7,915 55 0.70 503 -24.59 0.1207
2022-05-16 2022-03-31 13F OMNICOM GROUP COM 681919106 7,860 56 0.72 667 16.61 0.1395
2022-02-14 2021-12-31 13F OMNICOM GROUP COM 681919106 7,804 58 0.75 572 1.96 0.1124
2021-11-15 2021-09-30 13F OMNICOM GROUP COM 681919106 7,746 -277 -3.45 561 -12.62 0.1151
2021-08-16 2021-06-30 13F Omnicom Group SK 681919106 8,023 -727 -8.31 642 -1.08 0.1328
2021-05-17 2021-03-31 13F Omnicom Group SK 681919106 8,750 72 0.83 649 19.96 0.1405
2021-02-16 2020-12-31 13F Omnicom Group SK 681919106 8,678 84 0.98 541 27.29 0.1315
2020-11-16 2020-09-30 13F Omnicom Group SK 681919106 8,594 83 0.98 425 -8.60 0.1242
2020-08-14 2020-06-30 13F Omnicom Group SK 681919106 8,511 78 0.92 465 0.43 0.1469
2020-05-15 2020-03-31 13F Omnicom Group SK 681919106 8,433 -1,158 -12.07 463 -40.41 0.1746
2020-02-14 2019-12-31 13F Omnicom Group SK 681919106 9,591 -834 -8.00 777 -4.78 0.2351
2019-11-14 2019-09-30 13F Omnicom Group SK 681919106 10,425 -2,543 -19.61 816 -23.24 0.2798
2019-08-14 2019-06-30 13F Omnicom Group SK 681919106 12,968 56 0.43 1,063 12.85 0.3775
2019-05-15 2019-03-31 13F Omnicom Group SK 681919106 12,912 -706 -5.18 942 -5.52 0.3417
2019-02-14 2018-12-31 13F Omnicom Group SK 681919106 13,618 -260 -1.87 997 5.61 0.4094
2018-11-13 2018-09-30 13F Omnicom Group SK 681919106 13,878 87 0.63 944 -10.27 0.3196
2018-08-14 2018-06-30 13F Omnicom Group SK 681919106 13,791 142 1.04 1,052 6.05 0.3674
2018-05-15 2018-03-31 13F Omnicom Group SK 681919106 13,649 -227 -1.64 992 -1.88 0.3554
2018-02-14 2017-12-31 13F Omnicom Group SK 681919106 13,876 84 0.61 1,011 -1.08 0.3641
2017-11-14 2017-09-30 13F Omnicom Group SK 681919106 13,792 -567 -3.95 1,022 -14.12 0.3832
2017-08-14 2017-06-30 13F Omnicom Group SK 681919106 14,359 -190 -1.31 1,190 -5.10 0.4600
2017-05-15 2017-03-31 13F Omnicom Group SK 681919106 14,549 -4,645 -24.20 1,254 -23.26 0.4963
2017-02-14 2016-12-31 13F Omnicom Group SK 681919106 19,194 -97 -0.50 1,634 -0.37 0.6709
2016-11-14 2016-09-30 13F Omnicom Group SK 681919106 19,291 94 0.49 1,640 4.86 0.6817
2016-08-15 2016-06-30 13F Omnicom Group SK 681919106 19,197 -164 -0.85 1,564 -2.92 0.6783
2016-05-16 2016-03-31 13F Omnicom Group SK 681919106 19,361 -652 -3.26 1,611 6.41 0.7144
2016-02-16 2015-12-31 13F Omnicom Group SK 681919106 20,013 -43 -0.21 1,514 14.52 0.6871
2015-11-16 2015-09-30 13F Omnicom Group SK 681919106 20,056 104 0.52 1,322 -4.62 0.6194
2015-08-14 2015-06-30 13F Omnicom Group SK 681919106 19,952 -172 -0.85 1,386 -11.66 0.6249
2015-05-15 2015-03-31 13F Omnicom Group SK 681919106 20,124 50 0.25 1,569 0.90 0.7276
2015-02-17 2014-12-31 13F Omnicom Group SK 681919106 20,074 56 0.28 1,555 12.84 0.7829
2014-11-14 2014-09-30 13F Omnicom Group SK 681919106 20,018 51 0.26 1,378 -3.09 0.7358
2014-08-14 2014-06-30 13F Omnicom Group SK 681919106 19,967 41 0.21 1,422 -1.73 0.7676
2014-05-15 2014-03-31 13F Omnicom Group SK 681919106 19,926 39 0.20 1,447 -2.16 0.8314
2014-02-14 2013-12-31 13F Omnicom Group SK 681919106 19,887 46 0.23 1,479 17.47 0.9009
2013-11-14 2013-09-30 13F Omnicom Group SK 681919106 19,841 44 0.22 1,259 1.12 0.8199
2013-08-14 2013-06-30 13F Omnicom Group SK 681919106 19,797 19,797 1,245 0.8555
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.