Omnicom Group Inc.
US ˙ NYSE ˙ US6819191064

SecurityOMC / Omnicom Group Inc.
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Parallel Advisors, LLC ownership in OMC / Omnicom Group Inc.

On June 2, 2026 - Parallel Advisors, LLC filed a 13F-HR/A form disclosing ownership of 0 shares of Omnicom Group Inc. (US:OMC) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 7,543 shares of Omnicom Group Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Parallel Advisors, LLC has a history of taking positions in derivatives of the underlying security (OMC) in the form of stock options. The firm currently holds call 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.

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)
2026-06-02 2026-03-31 13F/A-1 OMNICOM GROUP INC COM Stock 681919106 0 -7,543 -100.00 0 -100.00
2026-02-11 2025-12-31 13F OMNICOM GROUP INC COM Stock 681919106 7,543 1,545 25.76 609 24.54 0.0111
2025-11-13 2025-09-30 13F OMNICOM GROUP INC COM Stock 681919106 5,998 240 4.17 489 18.12 0.0090
2025-07-08 2025-06-30 13F OMNICOM GROUP INC COM Stock 681919106 5,758 -938 -14.01 414 -25.41 0.0083
2025-04-08 2025-03-31 13F OMNICOM GROUP INC COM Stock 681919106 6,696 -375 -5.30 555 -8.72 0.0125
2025-02-10 2024-12-31 13F OMNICOM GROUP INC COM Stock 681919106 7,071 -135 -1.87 608 -18.39 0.0137
2024-11-13 2024-09-30 13F OMNICOM GROUP INC COM Stock 681919106 7,206 22 0.31 745 15.68 0.0175
2024-08-08 2024-06-30 13F OMNICOM GROUP INC COM Stock 681919106 7,184 126 1.79 644 -5.57 0.0165
2024-05-06 2024-03-31 13F OMNICOM GROUP INC COM Stock 681919106 7,058 66 0.94 683 12.91 0.0185
2024-02-12 2023-12-31 13F OMNICOM GROUP INC COM Stock 681919106 6,992 481 7.39 605 24.79 0.0179
2024-05-20 2023-09-30 13F/A-1 OMNICOM GROUP INC COM Stock 681919106 6,511 -195 -2.91 485 -24.14 0.0162
2023-11-14 2023-09-30 13F OMNICOM GROUP INC COM Stock 681919106 6,511 -195 485 0.0162
2024-05-20 2023-06-30 13F/A-1 OMNICOM GROUP INC COM Stock 681919106 6,706 -2,743 -29.03 638 -28.40 0.0205
2023-08-04 2023-06-30 13F OMNICOM GROUP INC COM Stock 681919106 6,706 -2,743 638 0.0205
2024-05-20 2023-03-31 13F/A-1 OMNICOM GROUP INC COM Stock 681919106 9,449 -2,474 -20.75 891 -8.33 0.0301
2023-04-25 2023-03-31 13F OMNICOM GROUP INC COM Stock 681919106 9,449 -2,474 891 0.0301
2023-02-06 2022-12-31 13F OMNICOM GROUP INC COM Stock 681919106 11,923 462 4.03 973 34.44 0.0422
2022-11-10 2022-09-30 13F OMNICOM GROUP INC COM Stock 681919106 11,461 589 5.42 723 4.48 0.0333
2022-08-01 2022-06-30 13F OMNICOM GROUP INC COM Stock 681919106 10,872 -1,694 -13.48 692 -36.22 0.0318
2022-04-28 2022-03-31 13F OMNICOM GROUP INC COM Stock 681919106 12,566 5,674 82.33 1,085 114.85 0.0431
2022-01-20 2021-12-31 13F OMNICOM GROUP INC COM Stock 681919106 6,892 -544 -7.32 505 -6.31 0.0187
2021-11-02 2021-09-30 13F/A-1 OMNICOM GROUP INC COM Stock 681919106 7,436 -302 -3.90 539 -12.92 0.0217
2021-08-06 2021-06-30 13F OMNICOM GROUP INC COM Stock 681919106 7,738 -1,127 -12.71 619 -5.78 0.0262
2021-04-23 2021-03-31 13F OMNICOM GROUP INC COM Stock 681919106 8,865 127 1.45 657 20.55 0.0310
2021-02-02 2020-12-31 13F OMNICOM GROUP INC COM Stock 681919106 8,738 2,574 41.76 545 78.69 0.0296
2020-10-27 2020-09-30 13F OMNICOM GROUP INC COM Stock 681919106 6,164 151 2.51 305 -7.01 0.0189
2020-07-16 2020-06-30 13F OMNICOM GROUP INC COM Stock 681919106 6,013 -1,321 -18.01 328 -18.41 0.0214
2020-04-27 2020-03-31 13F OMNICOM GROUP INC COM Stock 681919106 7,334 1,648 28.98 402 -12.80 0.0325
2020-01-30 2019-12-31 13F OMNICOM GROUP INC COM Stock 681919106 5,686 223 4.08 461 7.71 0.0346
2019-11-01 2019-09-30 13F OMNICOM GROUP INC COM Stock 681919106 5,463 -644 -10.55 428 -14.40 0.0366
2019-08-05 2019-06-30 13F OMNICOM GROUP INC COM Stock 681919106 6,107 -194 -3.08 500 8.93 0.0488
2019-05-01 2019-03-31 13F OMNICOM GROUP INC COM Stock 681919106 6,301 436 7.43 459 6.99 0.0515
2019-02-05 2018-12-31 13F OMNICOM GROUP INC COM Stock 681919106 5,865 -627 -9.66 429 -2.94 0.0598
2018-11-01 2018-09-30 13F OMNICOM GROUP INC COM Stock 681919106 6,492 4,534 231.56 442 196.64 0.0549
2018-07-30 2018-06-30 13F OMNICOM GROUP INC COM Stock 681919106 1,958 690 54.42 149 61.96 0.0213
2018-05-08 2018-03-31 13F OMNICOM GROUP INC COM Stock 681919106 1,268 122 10.65 92 10.84 0.0144
2018-02-13 2017-12-31 13F OMNICOM GROUP INC COM Stock 681919106 1,146 22 1.96 83 9.21 0.0136
2017-11-15 2017-09-30 13F/A-1 OMNICOM GROUP INC COM Stock 681919106 1,124 -176 -13.54 76 -25.49 0.0131
2017-08-07 2017-06-30 13F OMNICOM GROUP INC COM Stock 681919106 1,300 104 8.70 102 3.03 0.0192
2017-05-12 2017-03-31 13F/A-1 OMNICOM GROUP INC COM Stock 681919106 1,196 313 35.45 99 32.00 0.0197
2017-05-12 2017-03-31 13F OMNICOM GROUP INC COM Stock 681919106 1,196 99
2017-02-14 2016-12-31 13F OMNICOM GROUP INC COM Stock 681919106 883 883 75 0.0176
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
(%)
2022-01-19 2021-12-31 13F OMNICOM GROUP INC COM Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F OMNICOM GROUP INC COM Stock Call 7,738 619 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.