Marathon Oil Corporation (MRO) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for MRO. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 1 institution reported holding MRO, with 1 shares worth $29 in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Huntington National Bank | 1 | $29 | UNCHANGED |
Full institutional holdings, insider history, and congressional trades for Marathon Oil Corporation on SentiSense.