Omnicom Group Inc.
US ˙ NYSE ˙ US6819191064

SecurityOMC / Omnicom Group Inc.
InstitutionFmr Llc
Latest Disclosed Ownership6,008,267 shares
Latest Disclosed Value $ 452,482,622
Fmr Llc reports 37.30% increase in ownership of OMC / Omnicom Group Inc.

On May 15, 2026 - Fmr Llc filed a 13F-HR form disclosing ownership of 6,008,267 shares of Omnicom Group Inc. (US:OMC) valued at $452,482,588 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 4,376,166 shares of Omnicom Group Inc.. This represents a change in shares of 37.30% during the quarter. The current value of the position is $443,049,609 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.

Upgrade to unlock premium data and export to Excel .

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 6,008,267 1,632,101 37.30 452,483 28.05 0.0047
2026-02-17 2025-12-31 13F OMNICOM GROUP COM 681919106 4,376,166 1,436,010 48.84 353,375 47.42 0.0180
2025-11-13 2025-09-30 13F OMNICOM GROUP COM 681919106 2,940,156 444,654 17.82 239,711 33.52 0.0125
2025-08-14 2025-06-30 13F OMNICOM GROUP COM 681919106 2,495,502 25,062 1.01 179,526 -12.35 0.0101
2025-05-12 2025-03-31 13F OMNICOM GROUP COM 681919106 2,470,440 459,893 22.87 204,824 18.40 0.0131
2025-02-13 2024-12-31 13F OMNICOM GROUP COM 681919106 2,010,547 1,436,231 250.08 172,987 191.33 0.0103
2024-11-13 2024-09-30 13F OMNICOM GROUP COM 681919106 574,316 -20,186 -3.40 59,378 11.35 0.0036
2024-08-13 2024-06-30 13F OMNICOM GROUP COM 681919106 594,502 4,449 0.75 53,327 -6.60 0.0034
2024-05-13 2024-03-31 13F OMNICOM GROUP COM 681919106 590,053 -513,400 -46.53 57,094 -40.19 0.0038
2024-02-13 2023-12-31 13F OMNICOM GROUP COM 681919106 1,103,453 47,388 4.49 95,460 21.36 0.0073
2023-11-13 2023-09-30 13F OMNICOM GROUP COM 681919106 1,056,065 96,082 10.01 78,656 -13.89 0.0068
2023-08-11 2023-06-30 13F OMNICOM GROUP COM 681919106 959,983 -231,138 -19.41 91,342 -18.71 0.0077
2023-08-11 2023-03-31 13F/A-1 OMNICOM GROUP COM 681919106 1,191,121 -247,370 -17.20 112,370 -4.23 0.0103
2023-05-11 2023-03-31 13F OMNICOM GROUP COM 681919106 1,191,121 -247,370 112,370 0.0020
2023-02-13 2022-12-31 13F OMNICOM GROUP COM 681919106 1,438,491 -643,010 -30.89 117,338 -10.65 0.0117
2022-11-10 2022-09-30 13F OMNICOM GROUP COM 681919106 2,081,501 -530,050 -20.30 131,322 -20.95 0.0137
2022-08-12 2022-06-30 13F OMNICOM GROUP COM 681919106 2,611,551 -1,180,051 -31.12 166,121 -48.38 0.0166
2022-05-13 2022-03-31 13F OMNICOM GROUP COM 681919106 3,791,602 -784,797 -17.15 321,832 -4.02 0.0257
2022-02-14 2021-12-31 13F OMNICOM GROUP COM 681919106 4,576,399 762,334 19.99 335,312 21.33 0.0248
2022-02-14 2021-09-30 13F/A-1 OMNICOM GROUP COM 681919106 3,814,065 257,151 7.23 276,367 -2.86 0.0219
2021-11-15 2021-09-30 13F OMNICOM GROUP COM 681919106 3,814,065 257,151 276,367 0.0219
2021-08-13 2021-06-30 13F OMNICOM GROUP COM 681919106 3,556,914 219,109 6.56 284,517 14.96 0.0223
2021-05-14 2021-03-31 13F OMNICOM GROUP COM 681919106 3,337,805 1,168,861 53.89 247,499 82.96 0.0211
2021-02-08 2020-12-31 13F OMNICOM GROUP COM 681919106 2,168,944 258,384 13.52 135,276 43.04 0.0120
2020-11-13 2020-09-30 13F OMNICOM GROUP COM 681919106 1,910,560 -1,699,062 -47.07 94,573 -52.01 0.0096
2020-08-24 2020-06-30 13F/A-1 OMNICOM GROUP COM 681919106 3,609,622 -193,322 -5.08 197,086 -5.60 0.0217
2020-08-13 2020-06-30 13F OMNICOM GROUP COM 681919106 3,609,622 -193,322 197,086 4,841.8263
2020-05-14 2020-03-31 13F OMNICOM GROUP COM 681919106 3,802,944 1,162,283 44.01 208,781 -2.41 0.0289
2020-02-07 2019-12-31 13F OMNICOM GROUP COM 681919106 2,640,661 -1,010,109 -27.67 213,947 -25.16 0.0236
2019-11-13 2019-09-30 13F OMNICOM GROUP COM 681919106 3,650,770 -550,778 -13.11 285,855 -16.98 0.0343
2019-08-13 2019-06-30 13F OMNICOM GROUP COM 681919106 4,201,548 258,288 6.55 344,317 19.63 0.0402
2019-05-13 2019-03-31 13F OMNICOM GROUP COM 681919106 3,943,260 -706,087 -15.19 287,819 -15.48 0.0345
2019-02-13 2018-12-31 13F OMNICOM GROUP COM 681919106 4,649,347 -554,049 -10.65 340,518 -3.79 0.0466
2018-11-09 2018-09-30 13F OMNICOM GROUP COM 681919106 5,203,396 870,559 20.09 353,934 7.10 0.0398
2018-08-10 2018-06-30 13F OMNICOM GROUP COM 681919106 4,332,837 -1,149,979 -20.97 330,466 -17.06 0.0390
2018-05-14 2018-03-31 13F OMNICOM GROUP COM 681919106 5,482,816 815,227 17.47 398,436 17.21 0.0473
2018-02-12 2017-12-31 13F OMNICOM GROUP COM 681919106 4,667,589 1,126,967 31.83 339,941 29.62 0.0398
2017-11-13 2017-09-30 13F OMNICOM GROUP COM 681919106 3,540,622 804,420 29.40 262,253 15.62 0.0317
2017-08-29 2017-06-30 13F/A-1 OMNICOM GROUP COM 681919106 2,736,202 423,200 18.30 226,831 13.75 0.0282
2017-08-11 2017-06-30 13F OMNICOM GROUP COM 681919106 2,736,202 423,200 226,831
2017-05-11 2017-03-31 13F OMNICOM GROUP COM 681919106 2,313,002 -235,428 -9.24 199,404 -8.07 0.0253
2017-02-10 2016-12-31 13F OMNICOM GROUP COM 681919106 2,548,430 -348,430 -12.03 216,897 -11.91 0.0290
2016-11-14 2016-09-30 13F OMNICOM GROUP COM 681919106 2,896,860 214,313 7.99 246,234 12.64 0.0328
2016-08-11 2016-06-30 13F OMNICOM GROUP COM 681919106 2,682,547 330,709 14.06 218,601 11.68 0.0298
2016-05-16 2016-03-31 13F OMNICOM GROUP COM 681919106 2,351,838 -78,215 -3.22 195,744 6.47 0.0271
2016-02-12 2015-12-31 13F OMNICOM GROUP COM 681919106 2,430,053 -3,754 -0.15 183,857 14.63 0.0247
2015-11-10 2015-09-30 13F OMNICOM GROUP COM 681919106 2,433,807 -231,322 -8.68 160,387 -13.40 0.0228
2015-08-25 2015-06-30 13F/A-1 OMNICOM GROUP COM 681919106 2,665,129 -1,028,793 -27.85 185,200 -35.71 0.0237
2015-08-13 2015-06-30 13F OMNICOM GROUP COM 681919106 2,665,129 185,200
2015-05-14 2015-03-31 13F OMNICOM GROUP COM 681919106 3,693,922 367,044 11.03 288,052 11.76 0.0367
2015-02-17 2014-12-31 13F OMNICOM GROUP COM 681919106 3,326,878 278,392 9.13 257,732 22.78 0.0335
2014-11-14 2014-09-30 13F OMNICOM GROUP COM 681919106 3,048,486 -12,952 -0.42 209,919 -3.72 0.0284
2014-08-14 2014-06-30 13F OMNICOM GROUP COM 681919106 3,061,438 44,381 1.47 218,035 -0.46 0.0292
2014-05-15 2014-03-31 13F OMNICOM GROUP COM 681919106 3,017,057 -1,656,962 -35.45 219,037 -36.99 0.0304
2014-02-13 2013-12-31 13F OMNICOM GROUP COM 681919106 4,674,019 -818,415 -14.90 347,608 -0.24 0.0491
2013-11-14 2013-09-30 13F OMNICOM GROUP COM 681919106 5,492,434 -1,138,118 -17.16 348,441 -16.41 0.0534
2013-09-24 2013-06-30 13F/A-1 OMNICOM GROUP COM 681919106 6,630,552 6,630,552 416,863 0.0682
2013-08-14 2013-06-30 13F OMNICOM GROUP COM 681919106 6,630,552 416,863 0.0682
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.