Omnicom Group Inc.
IT ˙ BIT ˙ US6819191064
64,76 € ↑1,38 (2,18%)
2026-06-03
DEL PRIS
SecurityIT:1OMC / Omnicom Group Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership961,986 shares
Latest Disclosed Value $ 72,447,187
Citigroup Inc ownership in 1OMC / Omnicom Group Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 961,986 shares of Omnicom Group Inc. (IT:1OMC) valued at $66,569,431 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 473,252 shares of Omnicom Group Inc.. This represents a change in shares of 103.27% during the quarter. The current value of the position is $62,298,213 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (1OMC) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

IT:1OMC / Omnicom Group Inc. Historical Put/Call Ratio
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)
2026-05-11 2026-03-31 13F OMNICOM GROUP COM 681919106 961,986 488,734 103.27 72,447 89.58 0.0156
2026-02-13 2025-12-31 13F OMNICOM GROUP COM 681919106 473,252 263,762 125.91 38,215 123.75 0.0169
2025-11-10 2025-09-30 13F OMNICOM GROUP COM 681919106 209,490 -70,131 -25.08 17,080 -15.09 0.0076
2025-08-11 2025-06-30 13F OMNICOM GROUP COM 681919106 279,621 -151,243 -35.10 20,116 -43.69 0.0099
2025-05-12 2025-03-31 13F OMNICOM GROUP COM 681919106 430,864 127,749 42.15 35,723 36.97 0.0183
2025-02-12 2024-12-31 13F OMNICOM GROUP COM 681919106 303,115 19,959 7.05 26,080 -10.91 0.0155
2024-11-12 2024-09-30 13F OMNICOM GROUP COM 681919106 283,156 71,681 33.90 29,275 54.33 0.0170
2024-08-12 2024-06-30 13F OMNICOM GROUP COM 681919106 211,475 75,921 56.01 18,969 44.62 0.0122
2024-05-10 2024-03-31 13F OMNICOM GROUP COM 681919106 135,554 21,558 18.91 13,116 33.01 0.0086
2024-02-09 2023-12-31 13F OMNICOM GROUP COM 681919106 113,996 -10,129 -8.16 9,862 6.67 0.0069
2023-12-06 2023-09-30 13F/A-1 OMNICOM GROUP COM 681919106 124,125 -93,143 -42.87 9,245 -55.28 0.0069
2023-11-09 2023-09-30 13F OMNICOM GROUP COM 681919106 124,125 -93,143 9,245 0.0028
2023-08-10 2023-06-30 13F OMNICOM GROUP COM 681919106 217,268 77,549 55.50 20,673 56.84 0.0136
2023-05-11 2023-03-31 13F OMNICOM GROUP COM 681919106 139,719 26,790 23.72 13,181 43.10 0.0092
2023-02-09 2022-12-31 13F OMNICOM GROUP COM 681919106 112,929 -80,918 -41.74 9,212 -24.69 0.0073
2022-11-10 2022-09-30 13F OMNICOM GROUP COM 681919106 193,847 -20,998 -9.77 12,230 -10.50 0.0088
2022-08-10 2022-06-30 13F OMNICOM GROUP COM 681919106 214,845 107,840 100.78 13,665 50.46 0.0102
2022-05-12 2022-03-31 13F OMNICOM GROUP COM 681919106 107,005 -112,568 -51.27 9,082 -43.55 0.0055
2022-02-10 2021-12-31 13F OMNICOM GROUP COM 681919106 219,573 59,019 36.76 16,088 38.27 0.0086
2021-11-10 2021-09-30 13F OMNICOM GROUP COM 681919106 160,554 -40,562 -20.17 11,635 -27.67 0.0069
2021-08-10 2021-06-30 13F OMNICOM GROUP COM 681919106 201,116 -41,362 -17.06 16,086 -10.53 0.0097
2021-05-13 2021-03-31 13F OMNICOM GROUP COM 681919106 242,478 31,183 14.76 17,979 36.42 0.0116
2021-02-11 2020-12-31 13F OMNICOM GROUP COM 681919106 211,295 -128,296 -37.78 13,179 -21.60 0.0078
2020-11-12 2020-09-30 13F OMNICOM GROUP COM 681919106 339,591 58,472 20.80 16,810 9.52 0.0110
2020-08-12 2020-06-30 13F OMNICOM GROUP COM 681919106 281,119 -206,642 -42.37 15,349 -42.68 0.0120
2020-05-12 2020-03-31 13F OMNICOM GROUP COM 681919106 487,761 -15,005 -2.98 26,778 -34.26 0.0242
2020-02-12 2019-12-31 13F OMNICOM GROUP COM 681919106 502,766 -22,018 -4.20 40,734 -0.87 0.0295
2019-11-08 2019-09-30 13F OMNICOM GROUP COM 681919106 524,784 344,735 191.47 41,090 178.48 0.0326
2019-08-12 2019-06-30 13F OMNICOM GROUP COM 681919106 180,049 95,594 113.19 14,755 139.33 0.0119
2019-05-13 2019-03-31 13F OMNICOM GROUP COM 681919106 84,455 -13,707 -13.96 6,165 -14.24 0.0059
2019-02-12 2018-12-31 13F OMNICOM GROUP COM 681919106 98,162 85,300 663.19 7,189 721.60 0.0073
2018-11-13 2018-09-30 13F OMNICOM GROUP COM 681919106 12,862 -8,927 -40.97 875 -47.35 0.0008
2018-08-10 2018-06-30 13F OMNICOM GROUP COM 681919106 21,789 3,142 16.85 1,662 22.66 0.0015
2018-05-11 2018-03-31 13F OMNICOM GROUP COM 681919106 18,647 -423 -2.22 1,355 -2.45 0.0011
2018-02-12 2017-12-31 13F OMNICOM GROUP COM 681919106 19,070 -9,660 -33.62 1,389 -34.70 0.0011
2017-11-13 2017-09-30 13F OMNICOM GROUP COM 681919106 28,730 -45,799 -61.45 2,127 -65.57 0.0017
2017-08-11 2017-06-30 13F OMNICOM GROUP COM 681919106 74,529 -7,371 -9.00 6,178 -12.49 0.0056
2017-05-12 2017-03-31 13F OMNICOM GROUP COM 681919106 81,900 4,692 6.08 7,060 7.43 0.0063
2017-02-10 2016-12-31 13F OMNICOM GROUP COM 681919106 77,208 58,629 315.57 6,572 316.21 0.0059
2016-11-10 2016-09-30 13F OMNICOM GROUP COM 681919106 18,579 3,258 21.26 1,579 26.42 0.0015
2016-08-12 2016-06-30 13F OMNICOM GROUP COM 681919106 15,321 -85,770 -84.84 1,249 -85.16 0.0013
2016-05-13 2016-03-31 13F OMNICOM GROUP COM 681919106 101,091 -113,553 -52.90 8,414 -48.19 0.0095
2016-02-12 2015-12-31 13F OMNICOM GROUP COM 681919106 214,644 61,944 40.57 16,240 61.38 0.0162
2015-11-13 2015-09-30 13F OMNICOM GROUP COM 681919106 152,700 45,707 42.72 10,063 35.35 0.0094
2015-08-13 2015-06-30 13F OMNICOM GROUP COM 681919106 106,993 5,376 5.29 7,435 -6.17 0.0066
2015-05-14 2015-03-31 13F OMNICOM GROUP COM 681919106 101,617 -108,984 -51.75 7,924 -51.43 0.0077
2015-02-17 2014-12-31 13F OMNICOM GROUP COM 681919106 210,601 15,810 8.12 16,316 21.65 0.0146
2014-11-14 2014-09-30 13F OMNICOM GROUP COM 681919106 194,791 4,443 2.33 13,412 -1.06 0.0117
2014-08-14 2014-06-30 13F OMNICOM GROUP COM 681919106 190,348 -113,717 -37.40 13,556 -38.59 0.0130
2014-05-15 2014-03-31 13F OMNICOM GROUP COM 681919106 304,065 9,413 3.19 22,075 0.73 0.0226
2014-02-14 2013-12-31 13F OMNICOM GROUP COM 681919106 294,652 -235,963 -44.47 21,914 -34.90 0.0198
2013-11-14 2013-09-30 13F OMNICOM GROUP COM 681919106 530,615 386,232 267.51 33,662 270.81 0.0315
2013-08-14 2013-06-30 13F OMNICOM GROUP COM 681919106 144,383 144,383 9,078 0.0089
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-05-13 2021-03-31 13F OMNICOM GROUP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F OMNICOM GROUP COM Call 7,700 -12.50 480 10.09 n/a n/a n/a
2020-11-12 2020-09-30 13F OMNICOM GROUP COM Call 8,800 -9.28 436 -17.74 n/a n/a n/a
2020-08-12 2020-06-30 13F OMNICOM GROUP COM Call 9,700 -54.67 530 -54.89 n/a n/a n/a
2020-05-12 2020-03-31 13F OMNICOM GROUP COM Call 21,400 -50.12 1,175 -66.20 n/a n/a n/a
2020-02-12 2019-12-31 13F OMNICOM GROUP COM Call 42,900 -10.06 3,476 -6.93 n/a n/a n/a
2019-11-08 2019-09-30 13F OMNICOM GROUP COM Call 47,700 19.55 3,735 14.22 n/a n/a n/a
2019-08-12 2019-06-30 13F OMNICOM GROUP COM Call 39,900 171.43 3,270 204.75 n/a n/a n/a
2019-05-13 2019-03-31 13F OMNICOM GROUP COM Call 14,700 -76.81 1,073 -76.89 n/a n/a n/a
2019-02-12 2018-12-31 13F OMNICOM GROUP COM Call 63,400 139.25 4,643 157.52 n/a n/a n/a
2018-11-13 2018-09-30 13F OMNICOM GROUP COM Call 26,500 -57.87 1,803 -62.41 n/a n/a n/a
2018-08-10 2018-06-30 13F OMNICOM GROUP COM Call 62,900 219.29 4,797 234.99 n/a n/a n/a
2018-05-11 2018-03-31 13F OMNICOM GROUP COM Call 19,700 169.86 1,432 169.17 n/a n/a n/a
2018-02-12 2017-12-31 13F OMNICOM GROUP COM Call 7,300 -10.98 532 -12.36 n/a n/a n/a
2017-11-13 2017-09-30 13F OMNICOM GROUP COM Call 8,200 -72.11 607 -75.09 n/a n/a n/a
2017-08-11 2017-06-30 13F OMNICOM GROUP COM Call 29,400 2,437 n/a n/a n/a
2017-05-12 2017-03-31 13F OMNICOM GROUP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-02-10 2016-12-31 13F OMNICOM GROUP COM Call 1,000 85 n/a n/a n/a
2016-08-12 2016-06-30 13F OMNICOM GROUP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-05-13 2016-03-31 13F OMNICOM GROUP COM Call 4,600 383 n/a n/a n/a
2016-02-12 2015-12-31 13F OMNICOM GROUP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-11-13 2015-09-30 13F OMNICOM GROUP COM Call 6,000 395 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-05-13 2021-03-31 13F OMNICOM GROUP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F OMNICOM GROUP COM Put 9,700 -67.99 605 -59.67 n/a n/a n/a
2020-11-12 2020-09-30 13F OMNICOM GROUP COM Put 30,300 1.68 1,500 -7.81 n/a n/a n/a
2020-08-12 2020-06-30 13F OMNICOM GROUP COM Put 29,800 53.61 1,627 52.77 n/a n/a n/a
2020-05-12 2020-03-31 13F OMNICOM GROUP COM Put 19,400 -23.62 1,065 -48.25 n/a n/a n/a
2020-02-12 2019-12-31 13F OMNICOM GROUP COM Put 25,400 -14.48 2,058 -11.52 n/a n/a n/a
2019-11-08 2019-09-30 13F OMNICOM GROUP COM Put 29,700 -23.45 2,326 -26.86 n/a n/a n/a
2019-08-12 2019-06-30 13F OMNICOM GROUP COM Put 38,800 148.72 3,180 179.19 n/a n/a n/a
2019-05-13 2019-03-31 13F OMNICOM GROUP COM Put 15,600 60.82 1,139 60.42 n/a n/a n/a
2019-02-12 2018-12-31 13F OMNICOM GROUP COM Put 9,700 -51.98 710 -48.33 n/a n/a n/a
2018-11-13 2018-09-30 13F OMNICOM GROUP COM Put 20,200 51.88 1,374 35.50 n/a n/a n/a
2018-08-10 2018-06-30 13F OMNICOM GROUP COM Put 13,300 125.42 1,014 136.36 n/a n/a n/a
2018-05-11 2018-03-31 13F OMNICOM GROUP COM Put 5,900 -50.00 429 -50.06 n/a n/a n/a
2018-02-12 2017-12-31 13F OMNICOM GROUP COM Put 11,800 110.71 859 106.99 n/a n/a n/a
2017-11-13 2017-09-30 13F OMNICOM GROUP COM Put 5,600 2,700.00 415 2,341.18 n/a n/a n/a
2017-08-11 2017-06-30 13F OMNICOM GROUP COM Put 200 17 n/a n/a n/a
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.