Omnicom Group Inc.
US ˙ NYSE ˙ US6819191064

SecurityOMC / Omnicom Group Inc.
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership107,933 shares
Latest Disclosed Value $ 8,128
Natixis Advisors, L.p. reports 13.13% decrease in ownership of OMC / Omnicom Group Inc.

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 107,933 shares of Omnicom Group Inc. (US:OMC) valued at $8,128,434 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 124,247 shares of Omnicom Group Inc.. This represents a change in shares of -13.13% during the quarter. The current value of the position is $7,958,979 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)
2026-05-13 2026-03-31 13F OMNICOM GROUP COM 681919106 107,933 -16,314 -13.13 8 -20.00 0.0113
2026-02-10 2025-12-31 13F OMNICOM GROUP COM 681919106 124,247 920 0.75 10 0.00 0.0142
2025-11-13 2025-09-30 13F OMNICO GROUP INC COM 681919106 123,327 6,753 5.79 10 25.00 0.0147
2025-08-13 2025-06-30 13F OMNICOM GROUP COM 681919106 116,574 -40,159 -25.62 8 -33.33 0.0133
2025-05-08 2025-03-31 13F OMNICOM GROUP COM 681919106 156,733 -219 -0.14 13 -7.69 0.0240
2025-02-10 2024-12-31 13F OMNICOM GROUP COM 681919106 156,952 -746 -0.47 14 -18.75 0.0252
2024-11-06 2024-09-30 13F OMNICOM GROUP COM 681919106 157,698 4,974 3.26 16 23.08 0.0318
2024-08-01 2024-06-30 13F OMNICOM GROUP COM 681919106 152,724 -6,367 -4.00 14 -13.33 0.0298
2024-04-25 2024-03-31 13F OMNICOM GROUP COM 681919106 159,091 -1,185 -0.74 15 15.38 0.0354
2024-02-06 2023-12-31 13F OMNICOM GROUP COM 681919106 160,276 7,671 5.03 14 18.18 0.0365
2023-11-13 2023-09-30 13F OMNICOM GROUP COM 681919106 152,605 -10,056 -6.18 11 -26.67 0.0348
2023-08-15 2023-06-30 13F OMNICOM GROUP COM 681919106 162,661 6,560 4.20 15 7.14 0.0478
2023-05-11 2023-03-31 13F OMNICOM GROUP COM 681919106 156,101 -1,659 -1.05 15 16.67 0.0507
2023-01-27 2022-12-31 13F OMNICOM GROUP COM 681919106 157,760 54,339 52.54 13 -99.82 0.0486
2022-11-14 2022-09-30 13F OMNICOM GROUP COM 681919106 103,421 43,435 72.41 6,525 70.99 0.0276
2022-08-12 2022-06-30 13F OMNICOM GROUP COM 681919106 59,986 -22,311 -27.11 3,816 -45.37 0.0168
2022-05-12 2022-03-31 13F OMNICOM GROUP COM 681919106 82,297 13,238 19.17 6,985 38.04 0.0266
2022-02-08 2021-12-31 13F OMNICOM GROUP COM 681919106 69,059 17,903 35.00 5,060 36.50 0.0193
2021-11-15 2021-09-30 13F OMNICOM GROUP COM 681919106 51,156 27,901 119.98 3,707 99.30 0.0152
2021-08-12 2021-06-30 13F OMNICOM GROUP COM 681919106 23,255 2,146 10.17 1,860 18.85 0.0087
2021-05-05 2021-03-31 13F OMNICOM GROUP COM 681919106 21,109 2,175 11.49 1,565 32.51 0.0082
2021-02-12 2020-12-31 13F OMNICOM GROUP COM 681919106 18,934 18,934 1,181 0.0068
2020-11-12 2020-09-30 13F OMNICOM GROUP COM 681919106 0 -23,388 -100.00 0 -100.00
2020-08-11 2020-06-30 13F OMNICOM GROUP COM 681919106 23,388 -35,594 -60.35 1,277 -60.56 0.0085
2020-04-27 2020-03-31 13F OMNICOM GROUP COM 681919106 58,982 15,053 34.27 3,238 -9.02 0.0264
2020-02-10 2019-12-31 13F OMNICOM GROUP COM 681919106 43,929 18,122 70.22 3,559 76.10 0.0251
2019-11-12 2019-09-30 13F OMNICOM GROUP COM 681919106 25,807 -1,599 -5.83 2,021 -10.02 0.0160
2019-08-12 2019-06-30 13F OMNICOM GROUP COM 681919106 27,406 4,948 22.03 2,246 37.03 0.0183
2019-05-15 2019-03-31 13F/A-1 OMNICOM GROUP COM 681919106 22,458 -58,665 -72.32 1,639 -72.41 0.0143
2019-05-15 2019-03-31 13F OMNICOM GROUP COM 681919106 22,458 -58,665 1,639
2019-02-13 2018-12-31 13F/A-1 OMNICOM GROUP COM 681919106 81,123 -13,725 -14.47 5,941 -7.92 0.0587
2019-02-13 2018-12-31 13F OMNICOM GROUP COM 681919106 81,123 -13,725 5,941
2018-11-13 2018-09-30 13F OMNICOM GROUP COM 681919106 94,848 -13,142 -12.17 6,452 -21.66 0.0568
2018-08-14 2018-06-30 13F/A-1 OMNICOM GROUP COM 681919106 107,990 1,053 0.98 8,236 5.98 0.0787
2018-08-14 2018-06-30 13F OMNICOM GROUP COM 681919106 107,990 8,236
2018-05-10 2018-03-31 13F OMNICOM GROUP COM 681919106 106,937 -2,199 -2.01 7,771 -2.23 0.0767
2018-02-14 2017-12-31 13F OMNICOM GROUP COM 681919106 109,136 11,952 12.30 7,948 10.42 0.0810
2017-11-14 2017-09-30 13F OMNICOM GROUP COM 681919106 97,184 4,185 4.50 7,198 -6.64 0.0760
2017-07-27 2017-06-30 13F OMNICOM GROUP COM 681919106 92,999 7,444 8.70 7,710 4.53 0.0835
2017-05-12 2017-03-31 13F OMNICOM GROUP COM 681919106 85,555 3,100 3.76 7,376 5.10 0.0817
2017-02-07 2016-12-31 13F OMNICOM GROUP COM 681919106 82,455 -1,866 -2.21 7,018 -2.08 0.0844
2016-11-04 2016-09-30 13F OMNICOM GROUP COM 681919106 84,321 370 0.44 7,167 4.77 0.0928
2016-08-01 2016-06-30 13F OMNICOM GROUP COM 681919106 83,951 7,566 9.91 6,841 7.60 0.0946
2016-05-06 2016-03-31 13F OMNICOM GROUP COM 681919106 76,385 29,391 62.54 6,358 78.85 0.0951
2016-02-12 2015-12-31 13F OMNICOM GROUP COM 681919106 46,994 5,488 13.22 3,555 29.93 0.0583
2015-11-12 2015-09-30 13F OMNICOM GROUP COM 681919106 41,506 -655 -1.55 2,736 -6.62 0.0475
2015-08-14 2015-06-30 13F OMNICOM GROUP COM 681919106 42,161 -34,169 -44.76 2,930 -50.77 0.0497
2015-05-15 2015-03-31 13F OMNICOM GROUP SPONSORED ADR 681919106 76,330 -3,249 -4.08 5,952 -3.45 0.1045
2015-02-05 2014-12-31 13F OMNICOM GROUP COM 681919106 79,579 -449 -0.56 6,165 11.87 0.1154
2014-11-03 2014-09-30 13F OMNICOM GROUP COM 681919106 80,028 -49,532 -38.23 5,511 -40.27 0.1106
2014-08-13 2014-06-30 13F OMNICOM GROUP COM 681919106 129,560 6,145 4.98 9,227 2.98 0.1322
2014-05-13 2014-03-31 13F OMNICOM GROUP COM 681919106 123,415 -2,055 -1.64 8,960 -3.98 0.1379
2014-02-12 2013-12-31 13F OMNICOM GROUP COM 681919106 125,470 -3,517 -2.73 9,331 14.03 0.1527
2013-10-30 2013-09-30 13F OMNICOM GROUP COM 681919106 128,987 6,308 5.14 8,183 6.09 0.1507
2013-07-19 2013-06-30 13F OMNICOM GROUP COM 681919106 122,679 122,679 7,713 0.1537
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.