Omnicom Group Inc.
US ˙ NYSE ˙ US6819191064

SecurityOMC / Omnicom Group Inc.
InstitutionRitholtz Wealth Management
Latest Disclosed Ownership12,699 shares
Latest Disclosed Value $ 956,369
Ritholtz Wealth Management reports 1.68% decrease in ownership of OMC / Omnicom Group Inc.

On April 20, 2026 - Ritholtz Wealth Management filed a 13F-HR form disclosing ownership of 12,699 shares of Omnicom Group Inc. (US:OMC) valued at $956,362 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 12,916 shares of Omnicom Group Inc.. This represents a change in shares of -1.68% during the quarter. The current value of the position is $956,362 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)
2026-04-20 2026-03-31 13F OMNICOM GROUP COM 681919106 12,699 -217 -1.68 956 -8.25 0.0166
2026-01-23 2025-12-31 13F OMNICOM GROUP COM 681919106 12,916 2,534 24.41 1,043 23.17 0.0190
2025-10-28 2025-09-30 13F OMNICOM GROUP COM 681919106 10,382 -7,264 -41.17 846 -33.33 0.0165
2025-07-28 2025-06-30 13F OMNICOM GROUP COM 681919106 17,646 -755 -4.10 1,269 -16.79 0.0280
2025-04-17 2025-03-31 13F OMNICOM GROUP COM 681919106 18,401 14 0.08 1,526 -3.54 0.0456
2025-01-15 2024-12-31 13F OMNICOM GROUP COM 681919106 18,387 -257 -1.38 1,582 -17.96 0.0465
2024-10-10 2024-09-30 13F OMNICOM GROUP COM 681919106 18,644 340 1.86 1,928 17.43 0.0581
2024-08-01 2024-06-30 13F OMNICOM GROUP COM 681919106 18,304 177 0.98 1,642 -6.44 0.0542
2024-04-24 2024-03-31 13F OMNICOM GROUP COM 681919106 18,127 171 0.95 1,754 12.94 0.0605
2024-01-18 2023-12-31 13F OMNICOM GROUP COM 681919106 17,956 -97 -0.54 1,553 15.55 0.0603
2023-10-13 2023-09-30 13F OMNICOM GROUP COM 681919106 18,053 -636 -3.40 1,345 -24.41 0.0604
2023-07-17 2023-06-30 13F OMNICOM GROUP COM 681919106 18,689 1,028 5.82 1,778 6.72 0.0800
2023-04-20 2023-03-31 13F OMNICOM GROUP COM 681919106 17,661 -413 -2.29 1,666 13.03 0.0830
2023-01-19 2022-12-31 13F OMNICOM GROUP COM 681919106 18,074 -1,841 -9.24 1,474 17.36 0.0823
2022-10-19 2022-09-30 13F OMNICOM GROUP COM 681919106 19,915 16,410 468.19 1,256 463.23 0.0667
2022-07-15 2022-06-30 13F OMNICOM GROUP COM 681919106 3,505 -5,449 -60.86 223 -70.66 0.0140
2022-04-14 2022-03-31 13F OMNICOM GROUP COM 681919106 8,954 2,025 29.22 760 49.61 0.0514
2022-01-18 2021-12-31 13F OMNICOM GROUP COM 681919106 6,929 2,458 54.98 508 56.79 0.0316
2021-10-14 2021-09-30 13F OMNICOM GROUP COM 681919106 4,471 4,471 324 0.0225
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.