Ticker · CUSIP 56585A102
Holders (tracked)
28
Combined shares
19,985,587
Combined value
$2.92B
Last close
$226.24
Quarter
2025Q4
Tracked holders · last 8 quarters
+6 vs previous quarter over the last 8.
Price is +55.1% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
29 events
- Bill Nygren (Harris / Oakmark) added2026-02-17+26,380 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2026-02-17−13,405 shares · 2025Q413F
- Jeremy Grantham (GMO) added2026-02-17+628 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−19,175 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+568,249 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−45,271 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−1,339,626 shares · 2025Q413F
- Steve Cohen (Point72) opened position2026-02-17+37,457 shares · 2025Q413F
- T. Rowe Price trimmed2026-02-17−1,109,013 shares · 2025Q413F
- Wellington Management trimmed2026-02-17−2,164,683 shares · 2025Q413F
- +15,648 shares · 2025Q413F
- Ray Dalio (Bridgewater Associates) added2026-02-13+11,914 shares · 2025Q413F
- Renaissance Technologies opened position2026-02-12+177,899 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+2,904,209 shares · 2025Q413F
- Ken Fisher (Fisher Asset Mgmt) added2026-02-09+685 shares · 2025Q413F
- Mario Gabelli (GAMCO) trimmed2026-02-05−1,282 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2025-11-14+1,340,836 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+775,578 shares · 2025Q313F
- D.E. Shaw & Co. added2025-11-14+8,118 shares · 2025Q313F
- AQR Capital Management trimmed2025-11-14−105,928 shares · 2025Q313F
- T. Rowe Price trimmed2025-11-14−165,281 shares · 2025Q313F
- Wellington Management trimmed2025-11-14−2,309,074 shares · 2025Q313F
- Bill Nygren (Harris / Oakmark) trimmed2025-11-14−122,848 shares · 2025Q313F
- Jeremy Grantham (GMO) trimmed2025-11-13−1,422 shares · 2025Q313F
- Ray Dalio (Bridgewater Associates) added2025-11-13+57,146 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−3,173,783 shares · 2025Q313F
- Ken Fisher (Fisher Asset Mgmt) trimmed2025-11-12−258 shares · 2025Q313F
- Mario Gabelli (GAMCO) trimmed2025-11-12−602 shares · 2025Q313F
- Norges Bank (Norway SWF) trimmed2025-11-12−210,089 shares · 2024Q313F
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of MPC…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| T. Rowe Price | 2016Q1 | $27.88 | +711.5% | $465.8M |
| Norges Bank (Norway SWF) | 2016Q1 | $48.12 | +370.2% | $657.0M |
| AQR Capital Management | 2016Q1 | $88.72 | +155.0% | $92.6M |
| Jeremy Grantham (GMO) | 2016Q1 | $120.68 | +87.5% | $1.4M |
| Renaissance Technologies | 2016Q4 | $124.47 | +81.8% | $40.2M |
| Ken Fisher (Fisher Asset Mgmt) | 2016Q1 | $136.20 | +66.1% | $4.3M |
| Wellington Management | 2016Q1 | $141.33 | +60.1% | $1.63B |
| Mario Gabelli (GAMCO) | 2019Q1 | $151.14 | +49.7% | $1.4M |
| Bill Nygren (Harris / Oakmark) | 2025Q1 | $155.59 | +45.4% | $912.2M |
| Steve Cohen (Point72) | 2016Q1 | $157.61 | +43.5% | $8.5M |
| Steve Cohen (Point72) | 2016Q1 | $157.61 | +43.5% | $8.5M |
| Steve Cohen (Point72) | 2016Q1 | $157.61 | +43.5% | $8.5M |
| Two Sigma Investments | 2016Q1 | $162.67 | +39.1% | $679K |
| Two Sigma Investments | 2016Q1 | $162.67 | +39.1% | $679K |
| Two Sigma Investments | 2016Q1 | $162.67 | +39.1% | $679K |
| Paul Tudor Jones (Tudor Investment) | 2016Q1 | $162.72 | +39.0% | $3.5M |
| Paul Tudor Jones (Tudor Investment) | 2016Q1 | $162.72 | +39.0% | $3.5M |
| Paul Tudor Jones (Tudor Investment) | 2016Q1 | $162.72 | +39.0% | $3.5M |
| D.E. Shaw & Co. | 2016Q1 | $165.07 | +37.1% | $396K |
| D.E. Shaw & Co. | 2016Q1 | $165.07 | +37.1% | $396K |
| D.E. Shaw & Co. | 2016Q1 | $165.07 | +37.1% | $396K |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $167.37 | +35.2% | $36.5M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $167.37 | +35.2% | $36.5M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $167.37 | +35.2% | $36.5M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $170.00 | +33.1% | $84.2M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $170.00 | +33.1% | $84.2M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $170.00 | +33.1% | $84.2M |
| Ray Dalio (Bridgewater Associates) | 2016Q3 | $172.94 | +30.8% | $44.2M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions4
- Norges Bank (Norway SWF)+2,904,209$472.3M
- Renaissance Technologies+177,899$28.9M
- Steve Cohen (Point72)+37,457$6.1M
- Paul Tudor Jones (Tudor Investment)+15,648$2.5M
Added to5
- Ken Griffin (Citadel Advisors)+568,249$92.4M
- Bill Nygren (Harris / Oakmark)+26,380$4.3M
- Ray Dalio (Bridgewater Associates)+11,914$1.9M
- Ken Fisher (Fisher Asset Mgmt)+685$111K
- Jeremy Grantham (GMO)+628$102K
Trimmed7
- Wellington Management−2,164,683$352.0M
- Izzy Englander (Millennium Mgmt)−1,339,626$217.9M
- Two Sigma Investments−45,271$7.4M
- AQR Capital Management−19,175$3.1M
- D.E. Shaw & Co.−13,405$2.2M
- Mario Gabelli (GAMCO)−1,282$208K
- T. Rowe Price−1,109,013$180K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 23 | $450.21B |
| 2022Q2 | 20 | $344.50B |
| 2022Q3 | 19 | $410.0M |
| 2022Q4 | 26 | $8.47B |
| 2023Q1 | 26 | $8.63B |
| 2023Q2 | 23 | $6.97B |
| 2023Q3 | 24 | $8.31B |
| 2023Q4 | 21 | $7.67B |
| 2024Q1 | 21 | $9.41B |
| 2024Q2 | 22 | $7.76B |
| 2024Q3 | 21 | $2.22B |
| 2024Q4 | 21 | $999.0M |
| 2025Q1 | 20 | $2.59B |
| 2025Q2 | 22 | $3.52B |
| 2025Q3 | 22 | $3.43B |
| 2025Q4 | 28 | $2.92B |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2026-03-11 | David J. Taylor | Sell | $1K – $15K | PDF ↗ |
| 2026-03-11 | David J. Taylor | Sell | $1K – $15K | PDF ↗ |
| 2026-02-26 | David J. Taylor | Sell | $1K – $15K | PDF ↗ |
| 2025-08-14 | David J. Taylor | Buy | $1K – $15K | PDF ↗ |
| 2025-07-18 | David J. Taylor | Sell | $1K – $15K | PDF ↗ |
| 2025-07-18 | David J. Taylor | Sell | $1K – $15K | PDF ↗ |
| 2025-05-15 | Rob Bresnahan | Buy | $1K – $15K | PDF ↗ |
| 2025-04-11 | Dan Newhouse | Sell (P) | $1K – $15K | PDF ↗ |
| 2025-04-08 | Rob Bresnahan | Sell | $1K – $15K | PDF ↗ |
| 2025-04-01 | Julie Johnson | Sell | $1K – $15K | PDF ↗ |
Who owns MPC
28 super-investors · 2025Q4
Tracked stake
19.99M
shares
Combined value
$2.92B
% of shares outstanding
—
shares-out unknown
Quarter action mix
New8Added7Trim13
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Wellington Management | 7.20M | $1.17B |
| 2 | Bill Nygren Harris / Oakmark | 4.03M | $656M |
| 3 | Norges Bank Norway SWF | 2.90M | $472M |
| 4 | Ken Griffin Citadel Advisors | 912.3K | $148M |
| 5 | Two Sigma Investments | 887.5K | $144M |
| 6 | AQR Capital Management | 409.4K | $67M |
| 7 | Izzy Englander Millennium Mgmt | 372.3K | $61M |
| 8 | Ken Griffin Citadel Advisors | 227.2K | $37M |
| 9 | Ray Dalio Bridgewater Associates | 195.6K | $32M |
| 10 | Renaissance Technologies | 177.9K | $29M |
| 11 | Ken Griffin Citadel Advisors | 161.2K | $26M |
| 12 | Izzy Englander Millennium Mgmt | 143.4K | $23M |
| 13 | Izzy Englander Millennium Mgmt | 97.3K | $16M |
| 14 | Steve Cohen Point72 | 43.8K | $7M |
| 15 | Steve Cohen Point72 | 37.5K | $6M |
| 16 | Steve Cohen Point72 | 28.9K | $5M |
| 17 | Paul Tudor Jones Tudor Investment | 20.6K | $3M |
| 18 | Ken Fisher Fisher Asset Mgmt | 19.2K | $3M |
| 19 | Paul Tudor Jones Tudor Investment | 15.6K | $3M |
| 20 | D.E. Shaw & Co. | 12.0K | $2M |
| 21 | Mario Gabelli GAMCO | 6.1K | $998K |
| 22 | Jeremy Grantham GMO | 6.0K | $971K |
| 23 | Paul Tudor Jones Tudor Investment | 3.6K | $585K |
| 24 | D.E. Shaw & Co. | 3.1K | $504K |
| 25 | Two Sigma Investments | 3.0K | $488K |
| 26 | T. Rowe Price | 2.06M | $335K |
| 27 | Two Sigma Investments | 2.0K | $325K |
| 28 | D.E. Shaw & Co. | 1.8K | $285K |
Recent moves
20 transactions
- +628 · 2025Q4
- +26,380 · 2025Q4
- TRIMT. Rowe Price−1,109,013 · 2025Q4
- +37,457 · 2025Q4
- +568,249 · 2025Q4
- −19,175 · 2025Q4
- −45,271 · 2025Q4
- −2,164,683 · 2025Q4
- +15,648 · 2025Q4
- TRIMD.E. Shaw & Co.−13,405 · 2025Q4
- −1,339,626 · 2025Q4
- +11,914 · 2025Q4
- +177,899 · 2025Q4
- +2,904,209 · 2025Q4
- +685 · 2025Q4
- −1,282 · 2025Q4
- +1,340,836 · 2025Q3
- +775,578 · 2025Q3
- +8,118 · 2025Q3
- TRIMT. Rowe Price−165,281 · 2025Q3
Embed this chart
Paste this iframe anywhere to embed the live MPC chart.
<iframe src="https://openstocks.me/embed/stock/MPC" width="100%" height="480" frameborder="0" loading="lazy" title="MPC chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>