DOSSIER · 13F Holders · Q2 2026
MARATHON PETROLEUM CORP
1 institutions still hold MARATHON PETROLEUM CORP as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.
CUSIP 56585AAS1·1 13F holders·last filed Jun 30, 2026
AI Holders Summary · Q2 2026
1 institutions reported MARATHON PETROLEUM CORP in Q2 2026. Ellenbecker Investment Group leads at 100.0% of the visible book.
Top holders
Sorted by position value. Source: SEC EDGAR 13F-HR filings.