MPLX LP
MPLX- Exchange
- NYSE
- Industry
- Pipe Lines (No Natural Gas)
- SEC CIK
- 0001552000
No open-market purchases or sales by MPLX LP insiders were filed in the last 90 days; 639 institutions reported holding it in 13F filings for Q2 2026, worth $11.1B in total; Appaloosa is the only superinvestor holding it.
Q3 2025 vs. Q2 2025
How the institutions holding MPLX LP changed between Q2 2025 and Q3 2025.
All holders in Q3 2025All holders in Q2 2025
| Measure | Q2 2025 | Of which not filed for Q3 2025 | Q3 2025 | Change |
|---|---|---|---|---|
| Holders | 575 | 8 | 576 | +9 |
| Shares | 217.1M | 513.6K | 210.1M | −6.52M (−3.0%) |
| Value | $11.2B | $26.5M | $10.5B | −$645.3M (−5.8%) |
8 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (54)
Institutions that held MPLX LP at the end of Q3 2025 but not at the end of Q2 2025.
Sold out (45)
Institutions that held MPLX LP at the end of Q2 2025 and filed for Q3 2025 without it.
Not filed for Q3 2025 yet (8)
Institutions that held MPLX LP at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q2 2025 | Value, Q2 2025 |
|---|---|---|
| NBW Capital LLC | 249,837 | $12.9M |
| Northeast Financial Consultants Inc | 230,478 | $11.9M |
| Congress Wealth Management LLC | 11,670 | $601.2K |
| Avantax Advisory Services, Inc. | 6,926 | $356.8K |
| Atria Wealth Solutions, Inc. | 6,893 | $355.1K |
| Keudell/Morrison Wealth Management | 6,500 | $334.8K |
| First Horizon Advisors, Inc. | 1,249 | $64.3K |
| Oliver Lagore Vanvalin Investment Group | 52 | $2.81K |