Omnicom Group Inc.
Omnicom Group Inc. (OMC) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · OMC · as of Mar 31, 2025
Ownership Breakdown
1,005
Institutional Holders
▲ 25 vs Q4
$16.82B
Total Inst. Value
▲ $132.64M vs Q4
285.01M
Shares Outstanding
freeFloat 99.06%
203.09M
13F Shares Held
▲ 9.17M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
OMC largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC services-advertising agencies | 23.47M | 11.93% | 11.93% | $1.95T | May 9, 2025 | ▲ 424.9K |
BLACKROCK, INC. services-advertising agencies | 20.37M | 10.36% | 10.36% | $1.69T | May 2, 2025 | ▲ 949.0K |
STATE STREET CORP services-advertising agencies | 16.59M | 8.43% | 8.43% | $1.39T | May 15, 2025 | ▲ 2.07M |
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ services-advertising agencies | 7.18M | 3.65% | 3.65% | $595.15B | May 2, 2025 | ▲ 1.21M |
FIL LTD services-advertising agencies | 5.40M | 2.74% | 2.74% | $447.42B | May 12, 2025 | ▼ 149.0K |
GEODE CAPITAL MANAGEMENT, LLC services-advertising agencies | 5.29M | 2.69% | 2.69% | $437.45B | May 13, 2025 | ▲ 138.8K |
BOSTON PARTNERS services-advertising agencies | 4.88M | 2.48% | 2.48% | $402.60B | May 13, 2025 | ▲ 762.9K |
WELLINGTON MANAGEMENT GROUP LLP services-advertising agencies | 4.48M | 2.28% | 2.28% | $371.59B | May 13, 2025 | ▼ 6.27M |
BANK OF NEW YORK MELLON CORP services-advertising agencies | 4.01M | 2.04% | 2.04% | $332.82B | Apr 29, 2025 | ▼ 2.70M |
BAIRD FINANCIAL GROUP, INC. services-advertising agencies | 3.90M | 1.98% | 1.98% | $323.04B | May 15, 2025 | ▲ 1.20M |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
31
Increased
+18.97M shares2
New Positions
first time holders17
Decreased
−13.58M shares0
Sold Out
fully exitedNet shares change (top 50)
+5.39M
+18.97M / −13.58M
Net new holders
+16
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
OMC insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
1
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
WREN JOHN Chairman and CEO | May 22, 2026 | Award | 75,938 | — | — | 291.8K | Form 4 ↗ |
WREN JOHN Chairman and CEO | May 22, 2026 | Tax Withhold | 38,767 | $74.93 | $2.90M | 253.0K | Form 4 ↗ |
Simm Daryl Co-President and Co-COO | May 22, 2026 | Award | 54,242 | — | — | 277.0K | Form 4 ↗ |
Simm Daryl Co-President and Co-COO | May 22, 2026 | Tax Withhold | 22,931 | $74.93 | $1.72M | 254.0K | Form 4 ↗ |
ANGELASTRO PHILIP J Executive Vice President & CFO | May 22, 2026 | Award | 48,818 | — | — | 567.3K | Form 4 ↗ |
ANGELASTRO PHILIP J Executive Vice President & CFO | May 22, 2026 | Tax Withhold | 24,922 | $74.93 | $1.87M | 542.4K | Form 4 ↗ |
WREN JOHN Chairman and CEO | May 15, 2026 | Tax Withhold | 4,397 | $70.83 | $311.4K | 215.8K | Form 4 ↗ |
Simm Daryl Co-President and Co-COO | May 15, 2026 | Tax Withhold | 3,969 | $70.83 | $281.1K | 222.7K | Form 4 ↗ |
Januzzi Louis F Senior VP, Gen. Counsel & Sec. | May 15, 2026 | Tax Withhold | 1,849 | $70.83 | $131.0K | 33.1K | Form 4 ↗ |
ANGELASTRO PHILIP J Executive Vice President & CFO | May 15, 2026 | Tax Withhold | 4,476 | $70.83 | $317.0K | 518.5K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Omnicom Group Inc. (OMC) is primarily owned by institutional investors, who hold approximately 71.3% of total shares outstanding. Company insiders own approximately 0.94%, while retail and public investors account for the remaining 27.81%.
The largest institutional shareholder of Omnicom Group Inc. is VANGUARD GROUP INC, holding approximately 23.47 million shares — equal to 11.93% of outstanding shares — as of March 31, 2025.
A total of 1,005 institutional investors currently hold OMC stock, with a combined institutional value of approximately $16.82 billion as of the most recent 13F filing period.
Frequently asked questions
OMC ownershipOmnicom Group Inc. (OMC) is primarily owned by institutional investors, who hold approximately 71.3% of shares. The largest shareholder is VANGUARD GROUP INC with a 11.93% stake. Company insiders hold 0.94%. Data sourced from SEC Form 13F as of March 31, 2025.