Omnicom Group Inc.
US ˙ NYSE ˙ US6819191064

SecurityOMC / Omnicom Group Inc.
InstitutionCwm, Llc
Latest Disclosed Ownership197,406 shares
Latest Disclosed Value $ 14,866,618
Cwm, Llc reports 34.56% increase in ownership of OMC / Omnicom Group Inc.

On May 14, 2026 - Cwm, Llc filed a 13F-HR form disclosing ownership of 197,406 shares of Omnicom Group Inc. (US:OMC) valued at $14,866,646 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 146,704 shares of Omnicom Group Inc.. This represents a change in shares of 34.56% during the quarter. The current value of the position is $14,556,718 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)
2026-05-14 2026-03-31 13F OMNICOM GROUP COM 681919106 197,406 50,702 34.56 14,867 135,045.45 0.0387
2026-01-26 2025-12-31 13F OMNICOM GROUP COM 681919106 146,704 79,577 118.55 12 120.00 0.0321
2025-10-15 2025-09-30 13F OMNICOM GROUP COM 681919106 67,127 11,384 20.42 5 25.00 0.0165
2025-07-25 2025-06-30 13F OMNICOM GROUP COM 681919106 55,743 -1,225 -2.15 4 0.00 0.0141
2025-05-01 2025-03-31 13F OMNICOM GROUP COM 681919106 56,968 4,045 7.64 5 0.00 0.0188
2025-02-04 2024-12-31 13F OMNICOM GROUP COM 681919106 52,923 83 0.16 5 -20.00 0.0189
2024-10-08 2024-09-30 13F OMNICOM GROUP COM 681919106 52,840 -2,370 -4.29 5 25.00 0.0235
2024-07-10 2024-06-30 13F OMNICOM GROUP COM 681919106 55,210 1,113 2.06 5 -20.00 0.0233
2024-04-05 2024-03-31 13F OMNICOM GROUP COM 681919106 54,097 2,184 4.21 5 25.00 0.0254
2024-02-01 2023-12-31 13F OMNICOM GROUP COM 681919106 51,913 326 0.63 4 33.33 0.0241
2023-10-11 2023-09-30 13F OMNICOM GROUP COM 681919106 51,587 -69 -0.13 4 -25.00 0.0235
2023-08-03 2023-06-30 13F OMNICOM GROUP COM 681919106 51,656 813 1.60 5 0.00 0.0304
2023-05-01 2023-03-31 13F OMNICOM GROUP COM 681919106 50,843 192 0.38 5 0.00 0.0324
2023-02-01 2022-12-31 13F OMNICOM GROUP COM 681919106 50,651 508 1.01 4 -99.87 0.0304
2022-10-27 2022-09-30 13F OMNICOM GROUP COM 681919106 50,143 893 1.81 3,163 0.96 0.0251
2022-07-28 2022-06-30 13F OMNICOM GROUP COM 681919106 49,250 -526 -1.06 3,133 -25.85 0.0243
2022-04-21 2022-03-31 13F OMNICOM GROUP COM 681919106 49,776 -56,155 -53.01 4,225 -45.57 0.0300
2022-01-31 2021-12-31 13F OMNICOM GROUP COM 681919106 105,931 2,022 1.95 7,762 -6.62 0.0546
2021-09-15 2021-06-30 13F/A-1 OMNICOM GROUP COM 681919106 103,909 0 0.00 8,312 0.00 0.0662
2021-07-29 2021-06-30 13F OMNICOM GROUP COM 681919106 103,909 0 8,312 0.0662
2021-09-15 2021-03-31 13F/A-1 OMNICOM GROUP COM 681919106 103,909 0 0.00 8,312 0.00 0.0662
2021-04-27 2021-03-31 13F OMNICOM GROUP COM 681919106 104,248 339 7,730 0.0680
2021-09-15 2020-12-31 13F/A-1 OMNICOM GROUP COM 681919106 103,909 0 0.00 8,312 0.00 0.0662
2021-01-27 2020-12-31 13F OMNICOM GROUP COM 681919106 111,842 7,933 6,976 0.0654
2021-09-15 2020-09-30 13F/A-1 OMNICOM GROUP COM 681919106 103,909 0 0.00 8,312 0.00 0.0662
2020-10-19 2020-09-30 13F OMNICOM GROUP COM 681919106 106,721 2,812 5,283 0.0587
2021-09-15 2020-06-30 13F/A-1 OMNICOM GROUP COM 681919106 103,909 0 0.00 8,312 0.00 0.0662
2020-07-22 2020-06-30 13F OMNICOM GROUP COM 681919106 47,984 -55,925 2,620 0.0311
2021-09-15 2020-03-31 13F/A-1 OMNICOM GROUP COM 681919106 103,909 0 0.00 8,312 0.00 0.0662
2020-04-28 2020-03-31 13F OMNICOM GROUP COM 681919106 47,969 -55,940 2,633 0.0392
2021-09-14 2019-12-31 13F/A-1 OMNICOM GROUP COM 681919106 103,909 0 0.00 8,312 0.00 0.0662
2020-01-27 2019-12-31 13F OMNICOM GROUP COM 681919106 48,052 -55,857 3,893 0.0497
2021-09-14 2019-09-30 13F/A-1 OMNICOM GROUP COM 681919106 103,909 0 0.00 8,312 0.00 0.0662
2019-10-22 2019-09-30 13F OMNICOM GROUP COM 681919106 48,249 -55,660 3,778 0.0550
2021-09-14 2019-06-30 13F/A-1 OMNICOM GROUP COM 681919106 103,909 0 0.00 8,312 0.00 0.0662
2019-07-31 2019-06-30 13F OMNICOM GROUP COM 681919106 48,015 -55,894 3,935 0.0651
2021-09-02 2019-03-31 13F/A-1 OMNICOM GROUP COM 681919106 103,909 103,729 57,627.22 8,312 63,838.46 0.0662
2019-04-22 2019-03-31 13F OMNICOM GROUP COM 681919106 146 -34 11 0.0002
2019-01-25 2018-12-31 13F OMNICOM GROUP COM 681919106 180 180 13 0.0003
2018-10-29 2018-09-30 13F OMNICOM GROUP COM 681919106 0 -21 -100.00 0 -100.00
2018-07-31 2018-06-30 13F OMNICOM GROUP COM 681919106 21 0 0.00 2 0.00 0.0001
2018-04-26 2018-03-31 13F OMNICOM GROUP COM 681919106 21 0 0.00 2 0.00 0.0001
2018-01-16 2017-12-31 13F OMNICOM GROUP COM 681919106 21 -67 -76.14 2 -71.43 0.0001
2017-10-16 2017-09-30 13F OMNICOM GROUP COM 681919106 88 88 7 0.0003
2017-04-17 2017-03-31 13F OMNICOM GROUP COM 681919106 0 -148 -100.00 0 -100.00
2017-01-19 2016-12-31 13F OMNICOM GROUP COM 681919106 148 0 0.00 13 0.00 0.0008
2016-10-17 2016-09-30 13F OMNICOM GROUP COM 681919106 148 0 0.00 13 8.33 0.0009
2016-07-21 2016-06-30 13F OMNICOM GROUP COM 681919106 148 0 0.00 12 0.00 0.0009
2016-04-18 2016-03-31 13F OMNICOM GROUP COM 681919106 148 0 0.00 12 9.09 0.0011
2016-02-01 2015-12-31 13F OMNICOM GROUP COM 681919106 148 148 11 0.0011
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.