MPLX LP (MPLX): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in MPLX · Energy. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
8
13F filers
Aggregate Value
$264.5M
Across holders
Last Price
$58.18
2026-10-19
Sector
Energy
GICS
Quarterly fund activity2 increased2 reduced0 exited
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| Clearbridge Investments, LLC CIK 0001348883 | Hedge Fund | 2.34M | $132.0M | 49.9% | 0.1% | Unchanged | +$0 | Q2 2026 |
| BROOKFIELD Corp /ON/ CIK 0001001085 | Hedge Fund | 1.36M | $76.4M | 28.9% | 0.1% | Reduced | $-46.1M | Q2 2026 |
| Appaloosa LP CIK 0001656456 | Hedge Fund | 502K | $28.3M | 10.7% | 0.4% | Unchanged | +$0 | Q2 2026 |
| Rockefeller Capital Management L.P. CIK 0001739439 | Hedge Fund | 259K | $14.6M | 5.5% | 0.0% | Added | $-24.5M | Q2 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 209K | $11.8M | 4.5% | 0.0% | Added | +$6.8M | Q2 2026 |
| Fulcrum Asset Management LLP CIK 0001353395 | Hedge Fund | 16K | $902K | 0.3% | 0.1% | Unchanged | +$0 | Q2 2026 |
| Squarepoint Ops LLC CIK 0001642575 | Hedge Fund | 6K | $355K | 0.1% | 0.0% | Unchanged | +$0 | Q2 2026 |
| Ancora Advisors, LLC CIK 0001446114 | Hedge Fund | 3K | $161K | 0.1% | 0.0% | Reduced | +$134K | Q2 2026 |
Unchanged
Hedge Fund
$132.0M· 49.9% of total· 0.1% port· 2.34M sh· +$0 QoQ· Q2 2026
Reduced
Hedge Fund
$76.4M· 28.9% of total· 0.1% port· 1.36M sh· $-46.1M QoQ· Q2 2026
Unchanged
Hedge Fund
$28.3M· 10.7% of total· 0.4% port· 502K sh· +$0 QoQ· Q2 2026
Added
Hedge Fund
$14.6M· 5.5% of total· 0.0% port· 259K sh· $-24.5M QoQ· Q2 2026
Added
Hedge Fund
$11.8M· 4.5% of total· 0.0% port· 209K sh· +$6.8M QoQ· Q2 2026
Unchanged
Hedge Fund
$902K· 0.3% of total· 0.1% port· 16K sh· +$0 QoQ· Q2 2026
Unchanged
Hedge Fund
$355K· 0.1% of total· 0.0% port· 6K sh· +$0 QoQ· Q2 2026
Reduced
Hedge Fund
$161K· 0.1% of total· 0.0% port· 3K sh· +$134K QoQ· Q2 2026
Recent insider activity
No Form 4 purchase or sale records in our coverage in the last 90 days.