Omnicom Group Inc. (OMC) Ownership
OMC ownership summary
as of October 18, 2026- Institutions
- 110.8% of shares outstanding
- Insiders
- 0.94% of shares outstanding
- Shares outstanding
- 274.3M
- Float
- 271.6M shares available to trade
- Short interest
- 8.84% 24.0M shares short
- Days to cover
- 7.34 short interest down 10.0% vs prior month
- Institutions 110.76%
- Insiders 0.94%
OMC top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 10.42% | 28.6M | $2.30B | −904,503 (−3.1%) | June 30, 2026 |
| 2 | State Street Corp | 8.96% | 24.6M | $1.98B | −3.2M (−11.4%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 6.78% | 18.6M | $1.50B | −1.7M (−8.4%) | June 30, 2026 |
| 4 | Arnhold & S. Bleichroeder Advisers, LLC | 5.35% | 14.7M | $1.18B | +7.4M (+101.1%) | June 30, 2026 |
| 5 | Vanguard Portfolio Management, LLC | 4.91% | 13.5M | $1.09B | −1.4M (−9.2%) | June 30, 2026 |
| 6 | Bank of New York Mellon Corp | 4.58% | 12.6M | $1.01B | +453,725 (+3.8%) | June 30, 2026 |
| 7 | JPMorgan Chase & Co | 4.41% | 12.1M | $973.6M | +53,757 (+0.4%) | June 30, 2026 |
| 8 | Geode Capital Management, LLC | 3.15% | 8.6M | $696.5M | −668,713 (−7.2%) | June 30, 2026 |
| 9 | Massachusetts Financial Services Company | 3.03% | 8.3M | $669.1M | −430,789 (−4.9%) | June 30, 2026 |
| 10 | FMR Inc | 2.79% | 7.7M | $617.6M | +1.7M (+27.6%) | June 30, 2026 |
| 11 | Hotchkis & Wiley Capital Management LLC | 2.50% | 6.9M | $553.3M | +1.5M (+27.7%) | June 30, 2026 |
| 12 | Capital Research Global Investors | 2.45% | 6.7M | $541.6M | +27,575 (+0.4%) | June 30, 2026 |
| 13 | Charles Schwab Investment Management Inc | 2.23% | 6.1M | $491.8M | −253,075 (−4.0%) | June 30, 2026 |
| 14 | Morgan Stanley - Brokerage Accounts | 2.14% | 5.9M | $473.5M | −1.0M (−15.1%) | June 30, 2026 |
| 15 | Baird Financial Group, Inc. | 1.77% | 4.9M | $390.9M | +142,082 (+3.0%) | June 30, 2026 |
| 16 | Amvescap Plc. | 1.55% | 4.2M | $341.9M | +265,305 (+6.7%) | June 30, 2026 |
| 17 | Dimensional Fund Advisors, Inc. | 1.45% | 4.0M | $321.2M | +7,849 (+0.2%) | June 30, 2026 |
| 18 | The Goldman Sachs Group Inc | 1.41% | 3.9M | $311.3M | +273,033 (+7.6%) | June 30, 2026 |
| 19 | Pacer Advisors, INC. | 1.16% | 3.2M | $255.4M | +323,346 (+11.4%) | June 30, 2026 |
| 20 | Beutel, Goodman & Company Ltd. | 1.13% | 3.1M | $249.0M | −1.0M (−25.1%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 11 holders added 12.1M shares and 9 cut 10.6M.
OMC top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 3.30% | 9.1M | $729.6M | −20,999 (−0.2%) | August 31, 2026 |
| 2 | State Street® CommServSelSectSPDR®ETF | 2.83% | 7.8M | $625.0M | −28,725 (−0.4%) | September 30, 2026 |
| 3 | Vanguard 500 Index Investor | 2.63% | 7.2M | $580.3M | −358,185 (−4.7%) | September 30, 2026 |
| 4 | Vanguard Small Cap Index | 2.25% | 6.2M | $497.4M | −383,056 (−5.8%) | September 30, 2026 |
| 5 | First Eagle Global A | 1.88% | 5.2M | $415.4M | — | August 31, 2026 |
| 6 | Vanguard Windsor II Inv | 1.49% | 4.1M | $328.4M | +867,900 (+27.1%) | June 30, 2026 |
| 7 | Vanguard MStar Small Cap Value Index | 1.46% | 4.0M | $323.6M | −147,914 (−3.6%) | September 30, 2026 |
| 8 | Fidelity 500 Index | 1.35% | 3.7M | $298.0M | +14,203 (+0.4%) | August 31, 2026 |
| 9 | iShares Core S&P 500 ETF | 1.33% | 3.7M | $294.5M | −5,883 (−0.2%) | September 30, 2026 |
| 10 | iShares Select Dividend ETF | 1.28% | 3.5M | $282.0M | −1,201 (−0.0%) | September 30, 2026 |
| 11 | Strategic Advisers Fidelity US TtlStk | 1.26% | 3.5M | $279.5M | +874,833 (+33.7%) | August 31, 2026 |
| 12 | State Street® SPDR® S&P 500® ETF | 1.23% | 3.4M | $271.2M | — | September 30, 2026 |
| 13 | American Funds Capital Inc Bldr A | 1.03% | 2.8M | $227.9M | — | September 30, 2026 |
| 14 | VictoryShares Free Cash Flow ETF | 1.02% | 2.8M | $225.4M | +1,965 (+0.1%) | September 30, 2026 |
| 15 | American Funds Cptl Wld Gr&Inc A | 1.02% | 2.8M | $224.5M | — | September 30, 2026 |
| 16 | Invesco S&P 500® Equal Weight ETF | 0.91% | 2.5M | $201.3M | −5,225 (−0.2%) | September 30, 2026 |
| 17 | JPMorgan Mid Cap Value L | 0.84% | 2.3M | $184.9M | −189,105 (−7.6%) | August 31, 2026 |
| 18 | BNY Mellon Dynamic Value Fund A | 0.67% | 1.8M | $148.9M | −125,663 (−6.4%) | September 30, 2026 |
| 19 | MFS Total Return A | 0.60% | 1.6M | $131.9M | −24,057 (−1.4%) | August 31, 2026 |
| 20 | Vanguard Institutional Index I | 0.53% | 1.5M | $117.0M | −72,610 (−4.8%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
OMC insider transactions
latest 19| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-13 | Gilbert Ray Cisneros, Jr. | Buy | $77.74 | — | — |
| 2026-02-17 | Ro Khanna | Sell | $68.00 | — | — |
| 2026-01-29 | John Boozman | Sell | $75.85 | — | — |
| 2026-01-29 | Ro Khanna | Sell | $75.85 | — | — |
| 2026-01-15 | John Boozman | Sell | $80.88 | — | — |
| 2025-10-31 | John Boozman | Sell | $74.95 | — | — |
| 2025-07-01 | Ro Khanna | Sell | $73.75 | — | — |
| 2025-04-23 | Ro Khanna | Buy | $73.26 | — | — |
| 2025-04-08 | Robert Bresnahan, Jr. | Sell | $70.29 | — | — |
| 2024-10-18 | Andrew Castellaneta | Sell | $105.29 | 4,000 | $421,160 |
| 2024-08-26 | Rochelle M Tarlowe | Sell | $99.17 | 3,000 | $297,510 |
| 2024-07-19 | Linda Johnson Rice | Sell | $90.88 | 488 | $44,349 |
| 2024-05-03 | Linda Johnson Rice | Sell | $92.68 | 453 | $41,984 |
| 2024-02-09 | Linda Johnson Rice | Sell | $86.66 | 507 | $43,937 |
| 2023-11-02 | Andrew Castellaneta | Sell | $76.57 | 3,300 | $252,681 |
| 2023-08-16 | Linda Johnson Rice | Sell | $80.24 | 467 | $37,472 |
| 2023-06-08 | Jonathan B Nelson | Sell | $94.71 | 25,000 | $2.4M |
| 2023-06-08 | Rochelle M Tarlowe | Sell | $94.12 | 1,800 | $169,416 |
| 2023-04-27 | Linda Johnson Rice | Sell | $89.75 | 1,700 | $152,575 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
OMC shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns OMC
Institutional investors own 110.8% of Omnicom's shares and insiders 0.94%. The largest holder is BlackRock Inc with 10.42% of the shares (28.6M), as of June 30, 2026. Among the top 20 institutions, 11 added shares and 9 reduced their stake in the latest filings. Short interest is 8.84% of the float, or 7.34 days of average trading volume. The share count fell 18.0% since 2014.
Related: OMC analyst forecast, OMC key metrics, OMC dividend history. See the OMC stock overview for the latest quote and news.
OMC ownership FAQ
Who owns the most Omnicom stock?
The largest shareholders of Omnicom are BlackRock Inc (10.42%), State Street Corp (8.96%), Vanguard Capital Management, LLC (6.78%), Arnhold & S. Bleichroeder Advisers, LLC (5.35%), Vanguard Portfolio Management, LLC (4.91%).
What percentage of Omnicom is owned by institutions?
Institutions hold 110.8% of Omnicom's shares outstanding; insiders hold 0.94%.
Which funds own Omnicom?
The largest fund holders of Omnicom are Vanguard MStar Total Stk Mkt Idx Invest (3.30%), State Street® CommServSelSectSPDR®ETF (2.83%), Vanguard 500 Index Investor (2.63%), Vanguard Small Cap Index (2.25%), First Eagle Global A (1.88%).
What is Omnicom's short interest?
24.0M shares of Omnicom were sold short, 8.84% of the float; at the average daily volume it would take 7.34 days to cover.
Are insiders buying or selling Omnicom?
Of the latest 19 reported insider transactions in Omnicom (since April 27, 2023), 2 were purchases and 17 were sales.
How many shares of Omnicom are outstanding?
Omnicom has 274.3M shares outstanding, of which 271.6M are in the public float.