Omnicom Group Inc.
US ˙ NYSE ˙ US6819191064

SecurityOMC / Omnicom Group Inc.
InstitutionDAVENPORT & Co LLC
Latest Disclosed Ownership21,680 shares
Latest Disclosed Value $ 1,632,697
DAVENPORT & Co LLC ownership in OMC / Omnicom Group Inc.

On April 15, 2026 - DAVENPORT & Co LLC filed a 13F-HR form disclosing ownership of 21,680 shares of Omnicom Group Inc. (US:OMC) valued at $1,632,721 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 12, 2026 disclosing 23,554 shares of Omnicom Group Inc.. This represents a change in shares of -7.96% during the quarter. The current value of the position is $1,632,721 USD.

DAVENPORT & Co LLC has a history of taking positions in derivatives of the underlying security (OMC) in the form of stock options.

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.

OMC / 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)
2026-04-15 2026-03-31 13F OMNICOM GROUP COM 681919106 21,680 -1,874 -7.96 1,633 -14.15 0.0089
2026-01-12 2025-12-31 13F OMNICOM GROUP COM 681919106 23,554 450 1.95 1,902 0.96 0.0101
2025-10-15 2025-09-30 13F OMNICOM GROUP COM 681919106 23,104 401 1.77 1,884 15.31 0.0100
2025-07-22 2025-06-30 13F OMNICOM GROUP COM 681919106 22,703 -48 -0.21 1,633 -13.41 0.0089
2025-04-28 2025-03-31 13F OMNICOM GROUP COM 681919106 22,751 -759 -3.23 1,886 -6.73 0.0109
2025-01-24 2024-12-31 13F OMNICOM GROUP COM 681919106 23,510 -476 -1.98 2,023 -18.43 0.0114
2024-10-24 2024-09-30 13F OMNICOM GROUP COM 681919106 23,986 240 1.01 2,480 16.38 0.0141
2024-08-06 2024-06-30 13F OMNICOM GROUP COM 681919106 23,746 62 0.26 2,130 -7.03 0.0129
2024-05-03 2024-03-31 13F OMNICOM GROUP COM 681919106 23,684 92 0.39 2,292 12.30 0.0141
2024-01-23 2023-12-31 13F OMNICOM GROUP COM 681919106 23,592 149 0.64 2,041 16.84 0.0139
2023-10-17 2023-09-30 13F OMNICOM GROUP COM 681919106 23,443 -351 -1.48 1,746 -22.88 0.0132
2023-07-20 2023-06-30 13F OMNICOM GROUP COM 681919106 23,794 -99 -0.41 2,264 0.44 0.0166
2023-04-27 2023-03-31 13F OMNICOM GROUP COM 681919106 23,893 -39 -0.16 2,254 15.47 0.0177
2023-01-20 2022-12-31 13F OMNICOM GROUP COM 681919106 23,932 -15 -0.06 1,952 29.19 0.0159
2022-10-11 2022-09-30 13F OMNICOM GROUP COM 681919106 23,947 -36 -0.15 1,511 -0.98 0.0131
2022-07-18 2022-06-30 13F OMNICOM GROUP COM 681919106 23,983 -632 -2.57 1,526 -26.95 0.0125
2022-05-02 2022-03-31 13F/A-1 OMNICOM GROUP COM 681919106 24,615 -160 -0.65 2,089 15.10 0.0143
2022-05-02 2022-03-31 13F OMC COM 681919106 24,615 -160 2,089 0.0143
2022-02-10 2021-12-31 13F OMC COM 681919106 24,775 -470 -1.86 1,815 -0.77 0.0119
2021-10-14 2021-09-30 13F OMC COM 681919106 25,245 798 3.26 1,829 -6.49 0.0129
2021-07-28 2021-06-30 13F/A-2 OMNICOM GROUP COM 681919106 24,447 29 0.12 1,956 8.01 0.0150
2021-04-28 2021-03-31 13F OMNICOM GROUP COM 681919106 24,418 -1,928 -7.32 1,811 10.23 0.0170
2021-01-13 2020-12-31 13F OMC COM 681919106 26,346 60 0.23 1,643 26.29 0.0161
2020-10-15 2020-09-30 13F OMNICOM GROUP COM 681919106 26,286 2,092 8.65 1,301 -1.51 0.0145
2020-07-28 2020-06-30 13F OMNICOM GROUP COM 681919106 24,194 -111 -0.46 1,321 -0.97 0.0161
2020-05-05 2020-03-31 13F OMC COM 681919106 24,305 -1,396 -5.43 1,334 -35.93 0.0192
2020-01-22 2019-12-31 13F OMC COM 681919106 25,701 -798 -3.01 2,082 -4.14 0.0223
2019-10-16 2019-09-30 13F OMC COM 681919106 26,499 0 0.00 2,172 0.00 0.0259
2019-07-10 2019-06-30 13F OMC COM 681919106 26,499 -780 -2.86 2,172 9.09 0.0258
2019-04-17 2019-03-31 13F OMC COM 681919106 27,279 -253 -0.92 1,991 -1.24 0.0248
2019-01-28 2018-12-31 13F OMC COM 681919106 27,532 -69 -0.25 2,016 7.41 0.0277
2018-10-11 2018-09-30 13F OMC COM 681919106 27,601 -1,017 -3.55 1,877 93,750.00 0.0218
2018-07-09 2018-06-30 13F OMC COM 681919106 28,618 0 0.00 2 -99.90 0.0269
2018-04-04 2018-03-31 13F OMC COM 681919106 28,618 991 3.59 2,080 3.33 0.0256
2018-01-17 2017-12-31 13F OMC COM 681919106 27,627 0 0.00 2,012 -1.66 0.0241
2017-10-12 2017-09-30 13F OMC COM 681919106 27,627 0 0.00 2,046 -10.66 0.0259
2017-07-18 2017-06-30 13F/A-1 OMC COM 681919106 27,627 -1,579 -5.41 2,290 -7.85 0.0303
2017-07-10 2017-06-30 13F OMC COM 681919106 29,206 2,486
2017-04-11 2017-03-31 13F OMC COM 681919106 29,206 0 0.00 2,486 124,150.00 0.0355
2017-01-05 2016-12-31 13F OMC COM 681919106 29,206 -218 -0.74 2 -99.92 0.0357
2016-10-19 2016-09-30 13F OMC COM 681919106 29,424 -135 -0.46 2,501 3.86 0.0369
2016-07-12 2016-06-30 13F OMC COM 681919106 29,559 111 0.38 2,409 -1.71 0.0367
2016-04-25 2016-03-31 13F OMC COM 681919106 29,448 0 0.00 2,451 9.96 0.0385
2016-01-20 2015-12-31 13F OMC COM 681919106 29,448 -686 -2.28 2,228 12.24 0.0360
2015-10-23 2015-09-30 13F OMC COM 681919106 30,134 -93 -0.31 1,986 -5.48 0.0334
2015-08-12 2015-06-30 13F OMNICOM GROUP COM 681919106 30,227 -1,592 -5.00 2,100 -15.36 0.0326
2015-04-24 2015-03-31 13F OMNICOM GROUP COM 681919106 31,819 31,819 5.27 2,481 18.14 0.0381
2015-02-04 2014-12-31 13F OMNICOM GROUP COM 681919106 0 -32,108 -100.00 0 -100.00
2014-10-10 2014-09-30 13F OMNICOM GROUP COM 681919106 32,108 -677 -2.06 2,211 -5.31 0.0386
2014-07-25 2014-06-30 13F OMNICOM GROUP COM 681919106 32,785 -35 -0.11 2,335 -2.02 0.0397
2014-04-21 2014-03-31 13F OMNICOM GROUP COM 681919106 32,820 -1,799 -5.20 2,383 -99.91 0.0432
2014-01-31 2013-12-31 13F OMNICOM GROUP COM 681919106 34,619 0 0.00 2,574,615 17.23 0.0481
2013-11-05 2013-09-30 13F/A-1 OMNICOM GROUP COM 681919106 34,619 -915 -2.57 2,196,229 -1.69 0.0453
2013-11-01 2013-09-30 13F OMNICOM GROUP COM 681919106 35,534 2,234,023
2013-08-12 2013-06-30 13F OMNICOM GROUP COM 681919106 35,534 35,534 2,234,023 0.0493
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
(%)
2021-10-14 2021-09-30 13F OMNICOM GROUP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-07-21 2021-06-30 13F OMNICOM GROUP COM Put 24,447 1,956 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.