MPC
Marathon Petroleum CorpCompany with tickers: MPC
CIK
1510295
CUSIP
56585A102
Shares Outstanding
291,936,635
Price History
Institutional Holders
Short Volume
Short Interest
Fails to Deliver
Financials
SEC Filings
Earnings Calls
Insider Trades
Congressional Trades
Holders: 7
Total Value: $21,382,107
Total Shares: 87,567
Institutional Ownership Trend
Holder Concentration
Across 7 13F filers · Δ vs Dec 31, 2025Top Holder
84.6%
+72.2 pts
Top 5
99.3%
+65.0 pts
Top 10
100.0%
+54.0 pts
HHI
7,271
Highly concentrated
+6,904
Quarterly Activity
vs Dec 31, 2025
New
5
Increased
1
Decreased
1
Sold Out
1,632
Unchanged
0
Holder count:
-1,627
Institutional value:
-99.9%
Shares held:
-100.0%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds |
|---|---|---|
| Small Wellington Grp LLC | +45 | 516 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds |
|---|---|---|
| Small Essential Partners LLC | −21 | 247 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) |
|---|---|---|
| Mid CCM INVESTMENT ADVISERS LLC | 74,123 | $18,099,354 |
| Mid GROUPAMA ASSET MANAGMENT | 8,435 | $2,059,658 |
| Small VESTOR CAPITAL, LLC | 2,958 | $722,284 |
| Small Raab & Moskowitz Asset Management LLC | 900 | $219,762 |
| Small SOA Wealth Advisors, LLC. | 388 | $94,741 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) |
|---|---|---|
| Mega BlackRock, Inc. | 22,425,221 | $3,647,013,682 |
| Mega STATE STREET CORP | 17,934,327 | $2,916,659,600 |
| Mega GEODE CAPITAL MANAGEMENT, LLC | 7,769,469 | $1,263,548,743 |
| Mega WELLINGTON MANAGEMENT GROUP LLP | 7,203,536 | $1,171,511,056 |
| Large Boston Partners | 6,119,715 | $995,249,248 |
| Holder | Value (USD) | % of 13F | Shares | Activity | Type | Discretion | Filed | Action |
|---|---|---|---|---|---|---|---|---|
| Mid CCM INVESTMENT ADVISERS LLC | $18,099,354 | 84.65% | 74,123 | First | Shares | Sole | 2026-05-20 | View |
| Mid GROUPAMA ASSET MANAGMENT | $2,059,658 | 9.63% | 8,435 | First | Shares | Sole | 2026-05-22 | View |
| Small VESTOR CAPITAL, LLC | $722,284 | 3.38% | 2,958 | First | Shares | Sole | 2026-05-21 | View |
| Small Raab & Moskowitz Asset Management LLC | $219,762 | 1.03% | 900 | First | Shares | Sole | 2026-05-21 | View |
| Small Wellington Grp LLC | $125,996 | 0.59% | 516 | Added | Shares | Sole | 2026-05-22 | View |
| Small SOA Wealth Advisors, LLC. | $94,741 | 0.44% | 388 | First | Shares | Sole | 2026-05-20 | View |
| Small Essential Partners LLC | $60,312 | 0.28% | 247 | Reduced | Shares | Sole | 2026-05-21 | View |
| No holders match your search. | ||||||||