Omnicom Group Inc.
OMC- Exchange
- NYSE
- Industry
- Services-Advertising Agencies
- SEC CIK
- 0000029989
In the last 90 days, Omnicom Group Inc. insiders filed 0 open-market purchases and 1 sale; 1,104 institutions reported holding it in 13F filings for Q2 2026, worth $21.2B in total; no superinvestor holds it.
Holders of 5% or more of OMC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Omnicom Group Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| State Street Corp | 13G | 13.80%26.7M shares | +5.40 ppfrom 8.40% | May 13, 20252 filings | Dec 5, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
3 Schedule 13D and 13G filings on Omnicom Group Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Dec 5, 202512:40 PM ET | State Street Corpand 1 other | 13G | 13.80%26.7M shares | +5.40 ppfrom 8.40% | Nov 30, 2025 | SEC |
| May 13, 202511:58 AM ET | State Street Corp | 13G | 8.40%16.6M shares | New | Mar 31, 2025 | SEC |
| May 12, 202510:44 AM ET | Wellington Management Group LLPand 2 others | 13G/A | 2.30%4.48M shares | –Below 5% | Mar 31, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Omnicom Group Inc. shares.
No Form 144 notices for Omnicom Group Inc. are on file.