Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in OMC held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 28.6M | $2.08B | -3.1% | 10.422% | 0.03% |
| 2 | STATE STREET CORP | 24.6M | $1.81B | -11.4% | 8.963% | 0.03% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 18.6M | $1.35B | -8.4% | 6.778% | 0.03% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 13.5M | $981.6M | -9.2% | 4.913% | 0.04% |
| 5 | Bank of New York Mellon Corp | 12.6M | $914.2M | +3.8% | 4.575% | 0.15% |
| 6 | JPMORGAN CHASE & CO | 12.1M | $893.5M | +0.4% | 4.405% | 0.05% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 8.6M | $628.3M | -7.2% | 3.151% | 0.03% |
| 8 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 8.3M | $611.7M | -4.9% | 3.027% | 0.19% |
| 9 | FMR LLC | 7.7M | $558.3M | +27.6% | 2.794% | 0.02% |
| 10 | First Eagle Investment Management, LLC | 7.3M | $534.8M | +0.5% | 2.677% | 0.44% |
| 11 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 6.9M | $500.2M | +27.8% | 2.503% | 1.46% |
| 12 | Capital Research Global Investors | 6.7M | $489.6M | +0.4% | 2.450% | 0.07% |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 6.1M | $444.6M | -4.0% | 2.225% | 0.06% |
| 14 | MORGAN STANLEY | 5.9M | $428.1M | -15.1% | 2.142% | 0.02% |
| 15 | Baird Financial Group, Inc. | 4.9M | $353.4M | +3.0% | 1.769% | 0.49% |
| 16 | Invesco Ltd. | 4.2M | $309.1M | +6.7% | 1.547% | 0.02% |
| 17 | DIMENSIONAL FUND ADVISORS LP | 4.0M | $290.4M | +0.2% | 1.453% | 0.05% |
| 18 | GOLDMAN SACHS GROUP INC | 3.9M | $281.4M | +7.6% | 1.408% | 0.02% |
| 19 | First Nebraska Trust Co | 5K | $225.0M | — | 0.002% | 0.00% |
| 20 | NORTHERN TRUST CORP | 2.8M | $202.8M | -18.0% | 1.015% | 0.02% |
| 21 | VICTORY CAPITAL MANAGEMENT INC | 2.6M | $188.8M | -15.8% | 0.945% | 0.11% |
| 22 | COOKE & BIELER LP | 2.3M | $165.0M | -0.8% | 0.826% | 1.91% |
| 23 | BANK OF AMERICA CORP /DE/ | 2.0M | $142.1M | -11.1% | 0.711% | 0.01% |
| 24 | ENVESTNET ASSET MANAGEMENT INC | 1.9M | $138.3M | -2.3% | 0.692% | 0.02% |
| 25 | CITADEL ADVISORS LLC | 1.9M | $138.1M | +31.6% | 0.691% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in OMC — a direct measure of their conviction.
Filings activity in OMC during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,114 | 1.4% | 106.44% | 6.46 pp | $20.74B | 7.8% |
| Q1 2026 | 1,130 | 0.4% | 112.90% | 0.01 pp | $22.49B | 6.9% |
| Q4 2025 | 1,135 | +22% | 112.91% | +32.94 pp | $24.15B | +39% |
| Q3 2025 | 930 | +0.5% | 79.97% | 43.02 pp | $17.35B | +15% |
| Q2 2025 | 925 | 3.1% | 122.99% | +6.38 pp | $15.02B | 3.8% |
| Q1 2025 | 955 | +3.2% | 116.61% | +3.12 pp | $15.62B | 1.9% |
| Q4 2024 | 925 | +1.2% | 113.49% | +45.12 pp | $15.92B | 12% |
| Q3 2024 | 914 | — | 68.37% | — | $18.17B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying OMC stock.
Based on Q2 2026 13F filings, institutional ownership of Omnicom Group Inc. stands at 106.4%, held across 1,114 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of OMC, with approximately 28,593,656 shares worth $2.08B as of Q2 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of OMC, including CITADEL ADVISORS LLC.
Our composite Smart Money Score for OMC is 33 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
100 institutions opened new positions in OMC during Q2 2026, while 130 fully exited. 273 added to existing positions and 700 trimmed.
OMC institutional ownership fell by 6.46 percentage points quarter-over-quarter, with a net change of -16 holders.
The top 10 institutions account for 50.0% of all reported 13F value in OMC, and the top 25 account for 70.7%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Omnicom Group Inc. (OMC) Institutional Ownership