Marathon Petroleum CORP
$442.26+2.3%
+$21.1B
Net Activity
+52.22% total shares
Institutions Holding
1987
Popularity Rank
#146
Avg Weight
0.19%
Total Value
$58.8B
Market Cap
$135.3B
1987 institutions currently hold MPC, with 875 net buyers and 864 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
864
Net Buying Institutions
875
Top 5 by Value
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Across its top 20 institutional holders, MPC's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 4/100, avg. turnover score 36/100).
MPC ranks #146 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
1987 institutions disclose a position in MPC, but none treat it as a major bet — even Capital Wealth Planning, LLC, its most concentrated holder, allocates just 2.0% of its own portfolio to it.
Turtle Creek Wealth Advisors, LLC has added to its MPC position for two straight quarters, increasing it by $52.4M to reach $52.8M today.
NFSG Corp has trimmed its MPC position for two straight quarters, cutting it by $84.6K while still holding $96.2K.
MPC is up 2.3% today, and institutions have been net buyers of $21.1B this quarter — today's price move and the underlying institutional flow are pointing the same direction.
MPC posted net income of $8.6B over the trailing twelve months, and currently trades at a P/E of 15.8.
+$5.7B
Total Buy Value
$4.6B
Total Sell Value
875
Net Buyers
864
Net Sellers
MPC
Q2 2026
Top 5 Institutional Movers
+$692.2M
+$630.4M
-$626.6M
-$545.0M
MPC does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
0
unique buyers
—
buy value
12-Month Buy/Sell Activity
| Action | Insider | Date | Value |
|---|---|---|---|
| Sell | Shawn M Lyon | 2026-08-31 | $376K |
| Sell | Shawn M Lyon | 2026-08-28 | $157K |
| Sell | Erin M Brzezinski | 2026-08-27 | $207K |
| Sell | Molly R Benson | 2026-08-17 | $2.58M |
| Sell | Molly R Benson | 2026-08-17 | $1.79M |
| Sell | Molly R Benson | 2026-08-17 | $1.79M |
| Sell | Shawn M Lyon | 2026-08-13 | $875K |
| Sell | Michael A Henschen II | 2026-08-12 | $2.05M |
7
Filings (90d)
$10.16M
Total Est. Value
29K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| Lyon Shawn M | 2026-08-31 | $376K |
| Lyon Shawn M | 2026-08-28 | $157K |
| Brzezinski Erin M | 2026-08-27 | $207K |
| HAGEDORN CARL KRISTOPHER | 2026-08-24 | $324K |
| Lyon Shawn M | 2026-08-20 | $875K |
| Benson Molly R | 2026-08-17 | $6.17M |
| Henschen Michael A II | 2026-08-12 | $2.05M |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
1
Filings (14d)
Marathon Petroleum issued a press release on August 4, 2026, announcing its financial results for the quarter ended June 30, 2026, and furnished that release as an exhibit to this 8-K. The filing excerpt doesn't include the actual numbers, so we can't tell from this alone how the quarter turned out.
View Full Filing (SEC EDGAR)56585A102, 565788906, 565788956, 565849906, 56585A902, 56585A952, 56585a102
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209
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Access MPC's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/MPCCLI
npx alphasmo stocks get MPC